.NET Code Catto Blogger Blog

SW FLA Code Camp .NET Exam Cram

noreply@blogger.com (Catto) — Fri, 02 Oct 2009 02:13:00 +0000

Hey Now Everybody,

Saturday is our SW Florida Code Camp & I’m presenting my session .NET Exam Cram. It’s going to be based on exam 70-536 which is the .NET Foundations exam. Also we’ll discuss topics that we’ll use everyday. This session will be great for beginners to guru’s. These topics will make us more efficient in our everyday tasks, also we’ll discuss positive personal productivity. The session is scheduled for

Room 124 @ 4:15pm Saturday Oct. 3rd 2009.

There will also be a surprise free give away to one lucky person. If you can’t make the session much of the content is outlined below:

Windows 7
Browsers
     FireFox 3.5
     IE8
     Chrome
     Safari
     Opera
RSS
Hotkeys – Keyboarding (Catto Home Keys)
    ALT + TAB
    Opening Apps
    Tab Key
     Browser Hotkeys
     Outlook
     Windows Key
     Visual Studio
     SQL Server Management Studio
Memory Management

MCTS 70-536 Summary Word Document ~70 pages

As for the code camp in general it’s just a really fun all day training & networking technology event. Special thanks to John Dunagan along with others for putting the event together.

As Always all comments welcome!

Catto

RSS - Drinking from the Fire-Hose

noreply@blogger.com (Catto) — Thu, 01 Oct 2009 01:59:00 +0000

RSS - Drinking from the Fire Hose

Hey Now-

RSS can greatly improve your performance by allowing you to efficiently obtain information. RSS is a technology most people such as my Mom does not know about or use & at the same time many obsessive computer users (geeks) such as myself enjoy using it daily. Microsoft always refers to ‘Drinking from the Fire Hose’ Since the info we need to follow is so intense similar to a fire hose, RSS helps us drink from that fire hose. Google Reader hands down my favorite URL on the internet.

RSS (Really Simple Syndication) can be used by a reader such as Google Reader. We can subscribe to a RSS Feed then use Google reader to view the information.

I’ve posted my list of feeds I’ve subscribe to all labeled. To use this file you can download the XML file (OPML) then go to Google Reader & click the Manage Subscriptions link (bottom right), click import & browse to the file. This list is ~500 blogs mostly technical.

A user will view many sites daily, we can click a link to a favorite website such as CNN then view the new news, then click another favorite such as ESPN & read the new news. This works however we are constantly going out to see if there is information. What we can do is automatically have all our the information we care about brought to us no us going to it.
This benefits us by having information from many sites all in one place & we see the info the instant the news is published.
We can get started using RSS by the following:
1. Login to Google
2. Go To Google Reader
3. Go to webpage with RSS feeds (get feed URL)
4. Subscribe to the feed
5. Read the feed in Google Reader

My favorite hotkeys for Google Reader is ………

J – Jump this will jump to the next post
M – Mark as unread this will mark the post un read

Here is an official Google YouTube Vid that offers a great description.

As Always all comments welcome,

Catto

Memory Management – My PC can run better!

noreply@blogger.com (Catto) — Thu, 01 Oct 2009 01:28:00 +0000

Memory Management

Hey Now -

Often time our pc's will freeze or not respond, then we wait unproductively. One action we can take is to view the process that is using the most memory & end it. Since usually the process consuming the most memory is the one causing the system to not respond.
If we are using a large amount of memory our systems will react slower & when there is not much memory used our systems will respond quickly. Memory is critical piece of hardware to our pc's & our productivity daily. Memory is one of the most important pieces of hardware & often called RAM (random access memory).
Memory Management - Monitoring & adjusting processes are two critical actions we can take to manage our memory.
Monitoring Memory in 7 & Vista has improved greatly from XP.

101 - View Processes by mem descending.
Task Manager Process Tab (Ctrl + Shift + Esc Hotkey to open Task Manager)
Resource Monitor - 7 & Vista have a much improved app compared to the traditional task manager. (click start pearl then type in Res & resource Monitor should be on the start menu to open)
Sort by Memory Descending - We can accomplish this by first ensuring the memory column is displayed (we can add columns such as peak mem on from the View menu --> select columns or right clicking on the column headers)
In 7 & Vista it's great since one the order is sorted every time we open the app after that memory will be sorted by desc. In XP we have to click 'mem' column header two times every time task manager is opened.

201 - Ending Processes
We can end a process by highlighting the process such as iexplore.exe then right clicking & selecting end tasks. Then confirm the end process.

301 - Minimizing Windows - By minimizing windows in some programs it will free memory. If a pc stops responding we can minimize all our windows (Win + M). For example Office apps such as Word & Outlook , Firefox 3.5 if it's minimized there will be memory free'd up so the system will respond quicker.

RAM Memory Hardware - We can see how much RAM is on a workstation by pressing the windows button & pause break. Win+PauseBreak. This will display the basic info regarding your system such as your processor/chip & RAM. Currently in my notebook my RAM shows 4G (2.62 usable)
We can buy memory for ~ $10 / gig now. Word to the motherboard! Currently a large percent of mother boards have a maximum of 4g. It's not too tuff or time consuming to buy more memory & install it on a notebook or desktop (my Mom can do it). By maxing out the memory installed we are also improving performance.
We should also keep in mind we now have ReadyBoost - Vista & beyond. We can easily use USB keys as memory (a really fast cache) doubling the amount of memory we have installed.

Memory & Managing our memory is critical to our productivity daily.

We can monitor & alter process to improve pc's performance at the same time our hardware is another factor we should be aware of.

As always all comments welcome!
Catto

Keyboarding - Catto Home Keys in the 2000’s

noreply@blogger.com (Catto) — Thu, 01 Oct 2009 00:38:00 +0000

Hey Now,

I introduce to you the

Catto Home Keys

Keyboarding 101

Catto Home Keys are a new efficient use of home keys. Keyboarding / typing is critical to being productive, efficient every day. In the 2000’s it’s time for a change & not use the same old home row keys. In 1870’s the keyboard layout which many use “QWERTY” (letters below 12345) was designed. When typing words the traditional home keys work well, there is a good amount of time we can use another set of home keys while navigating & completing many tasks daily. So, the home row has been around for ~140 years & I think it’s time to change it due to the fact we use pc’s now not just a type writer.

Left hand
     Thumb – Left Alt
     Pinky   - Tab
     Pointer – F
     Middle - E
     Ring     - 2

Right Hand –

     a.   Mouse
     b.   201 Touchpad (keyboard w/ touchpad)
                 Thumb – Left Click
                 Pointer - Touchpad
     c.   301 Touchpad (keyboard w/ touchpad)
               Thumb – Touchpad
               Left Thumb – Left click (for drag click & hold)
               Ring – J
               Pinky – Enter ready (not on enter but ready)

What this does it keep our left able to use the #1 Hotkey Alt + Tab to switch tasks since we do this so often. Catto Home Keys can be used thought our work day to improve productivity.

As always all comments welcome,

Catto

70-536 MCTS .NET Foundations Questions #37

noreply@blogger.com (Catto) — Mon, 21 Sep 2009 01:03:00 +0000

Hey Now,

Please feel free to check out my MCTS 70-536 reference page on Chris Catto.com. It’s a page with a summary of all of my posts.
As I study for this test I thought this would be good to post on to learn the content & others would be able to view & comment on it.
I'm try to split a previous post Here is the second half.

Question: 198

You create a class library that contains the class hierarchy defined in the following code segment.

(Line numbers are included for reference only.)
01
Public Class Group
02 Public Employees As Employee()
03 End Class
0405 Public Class Employee
06 Public Name As String
07 End Class
0809 Public Class Manager
10 Inherits Employee
11 Public Level As Integer
12 End Class
You create an instance of the Group class. You populate the fields of the instance. When you attempt to serialize the instance by using the Serialize method of the XmlSerializer class, you receive InvalidOperationException. You also receive the following error message: "There was an error generating the XML document." You need to modify the code segment so that you can successfully serialize instances of the Group class by using the XmlSerializer class. You also need to ensure that the XML output contains an element for all public fields in the class hierarchy. What should you do?

A. Insert the following code between lines 1 and 2 of the code segment:

<XmlArrayItem(Type:=GetType(Employee))> _
<XmlArrayItem(Type:=GetType(Manager))> _

B. Insert the following code between lines 1 and 2 of the code segment:

<XmlElement(Type:=GetType(Employee))> _

C. Insert the following code between lines 1 and 2 of the code segment:

<XmlArray(ElementName:="Employees")> _

D. Insert the following code between lines 5 and 6 of the code segment:

<XmlElement(Type:=GetType(Employee))>

andInsert the following code between lines 10 and 11 of the code segment:

<XmlElement(Type:=GetType(Manager))>

Answer: A

K8 – XML Array Item

Question: 199

You are testing a method that examines a running process. This method returns an ArrayList containing the name and full path of all modules that are loaded by the process. You need to list the modules loaded by a process named C:\TestApps\Process1.exe. Which code segment should you use?

A. ArrayList ar = new ArrayList();
Process[] procs;
ProcessModuleCollection modules;
procs = Process.GetProcesses(@”Process1”);
if (procs.Length > 0) {modules = porcs[0].Modules;
foreach (ProcessModule mod in modules) {
ar.Add(mod.ModuleName);
}}

B. ArrayList ar = new ArrayList();
Process[] procs;
ProcessModuleCollection modules;
procs = Process.GetProcesses(@”C:\TestApps\Process1.exe”);
if (procs.Length > 0) {modules = porcs[0].Modules;
foreach (ProcessModule mod in modules) {

ar.Add(mod.ModuleName);

}}

C. ArrayList ar = new ArrayList();
Process[] procs;
ProcessModuleCollection modules;
procs = Process.GetProcessesByName(@”Process1”);
if (procs.Length > 0) {modules = porcs[0].Modules;
foreach (ProcessModule mod in modules) {
ar.Add(mod.FileName);
}}

D. ArrayList ar = new ArrayList();
Process[] procs;
ProcessModuleCollection modules;
procs =Process.GetProcessesByName(@”C:\TestApps\Process1.exe”);
if
(procs.Length > 0) {
modules = porcs[0].Modules;
foreach (ProcessModule mod in modules) {
ar.Add(mod.FileName);
}}

Answer: C

K8 – Q:List modules loaded by process A: GetProcessesByName

Question: 200

You write the following code to implement the CompanyClass.MyMethod function.

public class CompanyClass {
public int MyMethod(int arg) {
return arg;
}}

You need to call the CompanyClass.MyMethod function dynamically from an unrelated class in your assembly. Which code segment should you use?

A. CompanyClass myClass = new CompanyClass();
Type t = typeof(CompanyClass);
MethodInfo m = t.GetMethod(“MyMethod”);
int i = (int)m.Invoke(this, new object[] { 1 });

B. CompanyClass myClass = new CompanyClass();
Type t = typeof(CompanyClass); |
MethodInfo m = t.GetMethod(“MyMethod”);
int i = (int) m.Invoke(myClass, new object[] { 1 });

C. CompanyClass myClass = new CompanyClass();
Type t = typeof(CompanyClass);
MethodInfo m = t.GetMethod(“CompanyClass.MyMethod”);
int i = (int)m.Invoke(myClass, new object[] { 1 });

D. Type t = Type.GetType(“CompanyClass”);
MethodInfo m = t.GetMethod(“MyMethod”);
int i = (int)m.Invoke(this, new object[] { 1 });

Answer: B

K8 – MyClass

Question: 201

You need to create a dynamic assembly named MyAssembly. You also need to save the assembly to disk. Which code segment should you use?

A. Dim objAssembly As New AssemblyName()objAssembly.Name = "MyAssembly"
Dim objBuilder As AssemblyBuilder =
_AppDomain.CurrentDomain.DefineDynamicAssembly( _objAssembly,
AssemblyBuilderAccess.Run)objBuilder.Save("MyAssembly.dll")

B. Dim objAssembly As New AssemblyName()objAssembly.Name = "MyAssembly"
Dim objBuilder As AssemblyBuilder =

_AppDomain.CurrentDomain.DefineDynamicAssembly( _objAssembly,
AssemblyBuilderAccess.Save)objBuilder.Save("MyAssembly.dll")

C. Dim objAssembly As New AssemblyName()objAssembly.Name = "MyAssembly"
Dim objBuilder As AssemblyBuilder =
_AppDomain.CurrentDomain.DefineDynamicAssembly( _objAssembly,
AssemblyBuilderAccess.RunAndSave)objBuilder.Save("MyAssembly.dll")

D. Dim objAssembly As New AssemblyName()objAssembly.Name = "MyAssembly"
Dim objBuilder As AssemblyBuilder =
_AppDomain.CurrentDomain.DefineDynamicAssembly( _objAssembly,
AssemblyBuilderAccess.Save)objBuilder.Save("c:\MyAssembly.dll")

Answer: B

K8 – Q: Create & Save A: AssemblyBuilderAccess.Save “MyAssebly”

Question: 202

You write the following code.

Public Delegate Sub FaxDocs(ByVal sender As Object, _
ByVal args as FaxArgs)
You need to create an event that will invoke FaxDocs. Which code segment should you use?

A. Public Shared Event Fax As FaxDocs

B. Public Shared Event FaxDocs As FaxArgs

C. Public Class FaxArgs
Inherits EventArgs
Private coverPageInfo As String
Public Sub New(ByVal coverInfo As String)
Me.coverPageInfo = coverInfo
End Sub
Public ReadOnly Property CoverPageInformation As String
Get
Return Me.coverPageInfo
End Get
End PropertyEnd Class

D. Public Class FaxArgs
Inherits EventArgs
Private coverPageInfo As String
Public ReadOnly Property CoverPageInformation As String Get
Return Me.coverPageInfo
End Get
End PropertyEnd Class

Answer: A

K8 – Create an event to invoke FaxDocs A: Public Shared Event Fax As FaxDocs

Question: 203

You are developing a method to encrypt sensitive data with the Data Encryption Standard (DES) algorithm. Your method accepts the following parameters:

The byte array to be encrypted, which is named messageAn encryption key, which is named keyAn initialization vector, which is named iv You need to encrypt the data. You also need to write the encrypted data to a MemoryStream object. Which code segment should you use?

A. DES^ des = gcnew DESCryptoServiceProvider();
des->BlockSize = message->Length;
ICryptoTransform^ crypto = des->CreateEncryptor(key, iv);
MemoryStream ^cipherStream = gcnew MemoryStream();
CryptoStream ^cryptoStream = gcnew CryptoStream(cipherStream,crypto, CryptoStreamMode::Write);
cryptoStream->Write(message, 0, message->Length);

B. DES^ des = gcnew DESCryptoServiceProvider();
ICryptoTransform^ crypto = des->CreateDecryptor(key, iv);
MemoryStream ^cipherStream = gcnew MemoryStream();
CryptoStream ^cryptoStream = gcnew
CryptoStream(cipherStream, crypto,
CryptoStreamMode::Write);
cryptoStream->Write(message, 0, message->Length);

C. DES^ des = gcnew DESCryptoServiceProvider();
ICryptoTransform^ crypto = des->CreateDecryptor();
MemoryStream ^cipherStream = gcnew MemoryStream();CryptoStream ^cryptoStream
= gcnew CryptoStream(cipherStream,crypto,
CryptoStreamMode::Write);
cryptoStream->Write(message, 0, message->Length);

D. DES^ des = gcnew DESCryptoServiceProvider();
ICryptoTransform^ crypto = des->CreateEncryptor(key, iv);
MemoryStream ^cipherStream = gcnew MemoryStream();
CryptoStream ^cryptoStream = gcnew CryptoStream(cipherStream, crypto, CryptoStreamMode::Write);
cryptoStream->Write(message, 0, message->Length);

Answer: D

K8 – Q: Encrypt A: CreateEncryptor ICryptoTransform

Question: 204

You are testing a newly developed method named PersistToDB. This method accepts a parameter of type EventLogEntry. This method does not return a value. You need to create a code segment that helps you to test the method. The code segment must read entries from the application log of local computers and then pass the entries on to the PersistToDB method. The code block must pass only events of type Error or Warning from the source MySource to the PersistToDB method. Which code segment should you use?

A. Dim myLog As New EventLog("Application", ".")
For Each entry As EventLogEntry In myLog.Entries
If entry.Source = "MySource" Then
PersistToDB(entry)
End If
Next

B. Dim myLog as New EventLog("Application", ".")
myLog.Source = "MySource"
For Each entry As EventLogEntry In myLog.Entries
If entry.EntryType = (EventLogEntryType.Error And _
EventLogEntryType.Warning) Then
PersistToDB(entry)
End If
Next

C. Dim myLog as New EventLog("Application", ".")
For Each entry As EventLogEntry In myLog.Entries
If entry.Source = "MySource" Then
If (entry.EntryType = EventLogEntryType.Error) Or _
(entry.EntryType = EventLogEntryType.Warning) Then
PersistToDB(entry)
End If
End If
Next

D. Dim myLog as New EventLog("Application", ".")
myLog.Source = "MySource"
For Each entry As EventLogEntry In myLog.Entries
If (entry.EntryType = EventLogEntryType.Error) Or _
(entry.EntryType = EventLogEntryType.Warning) Then
PersistToDB(entry)
End If
Next

Answer: C

A: Loop threw all w/ some ifs to check if

Question: 205

You are creating an undo buffer that stores data modifications. You need to ensure that the undo functionality undoes the most recent data modifications first. You also need to ensure that the undo buffer permits the storage of strings only. Which code segment should you use?

A. Stack<String^> undoBuffer = gcnew Stack<String^>();

B. Stack undoBuffer = gcnew Stack();

C. Queue<String^> undoBuffer = gcnew Queue<String^>();

D. Queue undoBuffer = gcnew Queue();

Answer: A

K8 – Most rescent Stack LIFO A: Stack String

Question: 206

You need to write a multicast delegate that accepts a DateTime argument. Which code segment should you use?

A. public delegate int PowerDeviceOn(bool result,
DateTime autoPowerOff);

B. public delegate bool PowerDeviceOn(object sender,
EventsArgs autoPowerOff);

C. public delegate void PowerDeviceOn(DataTime autoPowerOff);

D. public delegate bool PowerDeviceOn(DataTime autoPowerOff);

Answer: C

K8 – void PowerDeviceOn DataTemautoPowerOff

Question: 207

You are writing a method to compress an array of bytes. The array is passed to the method in a parameter named document. You need to compress the incoming array of bytes and return the result as an array of bytes. Which code segment should you use?

A. Dim objStream As New MemoryStream(document)
Dim objDeflate As New DeflateStream(objStream, CompressionMode.Compress)
Dim result(document.Length) As Byteobj
Deflate.Write(result, 0, result.Length)
Return result

B. Dim objStream As New MemoryStream(document)
Dim objDeflate As New DeflateStream(objStream, CompressionMode.Compress)obj
Deflate.Write(document, 0, document.Length)obj
Deflate.Close()
Return objStream.ToArray

C. Dim objStream As New MemoryStream()
Dim objDeflate As New DeflateStream(objStream, CompressionMode.Compress)obj
Deflate.Write(document, 0, document.Length)obj
Deflate.Close()
Return objStream.ToArray

D. Dim objStream As New MemoryStream()
Dim objDeflate As New DeflateStream(objStream, CompressionMode.Compress)
Dim outStream As New MemoryStreamDim b As IntegerWhile (b = objDeflate.ReadByte)
outStream.WriteByte(CByte(b))
End
WhileReturn outStream.ToArray

Answer: C

K8 – MemoryStream()

Question: 208

You create the definition for a Vehicle class by using the following code segment.

public ref class Vehicle {

public : [XmlAttribute(AttributeName = "category")]
String^ vehicleType;
String^ model;
[XmlIgnore]
int year;
[XmlElement(ElementName = "mileage")]
int miles;
Condition Type condition;
Vehicle() {}
enum ConditionType {
[XmlEnum("Poor")] BelowAverage,
[XmlEnum("Good")] Average,
[XmlEnum("Excellent")] AboveAverage
}};

You create an instance of the Vehicle class. You populate the public fields of the Vehicle class instance as shown in the following table:

Exhibit:

You need to identify the XML block that is produced when this Vehicle class instance is serialized. Which block of XML represents the output of serializing the Vehicle instance?

B. <?xml version="1.0" encoding="utf-8"?>
<Vehicle
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
category="car">
<model>racer</model>
<mileage>15000</mileage>
<condition>Excellent</condition>
</Vehicle>

C. <?xml version="1.0" encoding="utf-8"?>
<Vehicle
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
category="car">
<model>racer</model>
<mileage>15000</mileage>
<conditionType>Excellent</conditionType>
</Vehicle>

D. <?xml version="1.0" encoding="utf-8"?>
<Vehicle
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<category>car</category>
<model>racer</model>
<mileage>15000</mileage>
<condition>Excellent</condition>
</Vehicle>

Answer: B

K8 – Serilize XML

Question: 209

You are writing a method to compress an array of bytes. The bytes to be compressed are passed to the method in a parameter named document. You need to compress the contents of the incoming parameter. Which code segment should you use?

A. Dim inStream As New MemoryStream(document)
Dim zipStream As New GZipStream( _inStream, CompressionMode.Compress)
Dim result(document.Length) As
BytezipStream.Write(result, 0, result.Length)
Return result

B. Dim objStream As New MemoryStream(document)
Dim zipStream As New GZipStream( _ objStream, CompressionMode.Compress)zipStream.Write(document, 0,
document.Length)zipStream.Close()
Return objStream.ToArray

C. Dim outStream As New MemoryStream
Dim zipStream As New GZipStream( _outStream, CompressionMode.Compress)zipStream.Write(document, 0,
document.Length)zipStream.Close()
Return outStream.ToArray

D. Dim objStream As New MemoryStream(document)
Dim zipStream As New
GZipStream( _objStream, CompressionMode.Compress)
Dim outStream As New
MemoryStreamDim b As IntegerWhile (b =
zipStream.ReadByte)outStream.WriteByte(CByte(b))
End While
Return outStream.ToArray

Answer: C

K8 – Compress array of bytes

Question: 210

You are developing a method to decrypt data that was encrypted with the Triple DES Algorithm. The method accepts the following parameters: The byte array to be decrypted, which is named cipherMessageThe key, which is named key An initialization vector, which is named iv You need to decrypt the message by using the TripleDES class and place the result in a string. Which code segment should you use?

A. TripleDES des = new TripleDESCryptoServiceProvider();
des.BlockSize = cipherMessage.Length;
ICryptoTransform crypto = des.CreateDecryptor(key, iv);
MemoryStream cipherStream = new MemoryStream(cipherMessage);
CryptoStream cryptoStream = new CryptoStream( cipherStream, crypto, CryptoStreamMode.Read);
string message;
message = new StreamReader(cryptoStream).ReadToEnd();

B. TripleDES des = new TripleDESCryptoServiceProvider();
des.FeedbackSize = cipherMessage.Length;
ICryptoTransform crypto = des.CreateDecryptor(key, iv);
MemoryStream cipherStream = new MemoryStream(cipherMessage);
CryptoStream cryptoStream = new CryptoStream(
cipherStream, crypto, CryptoStreamMode.Read);
string message;
message = new StreamReader(cryptoStream).ReadToEnd();

C. TripleDES des = new TripleDESCryptoServiceProvider();
ICryptoTrans form crypto = des.CreateDecryptor();
MemoryStream cipherStream = new MemoryStream(cipherMessage);
CryptoStream cryptoStream = new CryptoStream(
cipherStream, crypto, CryptoStreamMode.Read);
string message;
message = new StreamReader(cryptoStream).ReadToEnd();

D. TripleDES des = new TripleDESCryptoServiceProvider();
ICryptoTrans form crypto = des.CreateDecryptor(key, iv);
MemoryStream cipherStream = new MemoryStream(cipherMessage);
CryptoStream cryptoStream = new CryptoStream( cipherStream, crypto, CryptoStreamMode.Read);
string message;
message = new StreamReader(cryptoStream).ReadToEnd();

Answer: D

K8 - Des.CreateDecryptor(key, iv)

Question: 211

You are developing a utility screen for a new client application. The utility screen displays a thermometer that conveys the current status of processes being carried out by the application. You need to draw a rectangle on the screen to serve as the background of the thermometer as shown in the exhibit. The rectangle must be filled with gradient shading. Which code segment should you choose?

A - Rectangle^ rectangle = gcnew Rectangle(10, 10, 450, 25); LinearGradientBrush^ rectangleBrush = gcnew LinearGradientBrush(rectangle, Color::AliceBlue,
Color::CornflowerBlue,LinearGradientMode::ForwardDiagonal);
Pen^ rectanglePen = gcnew Pen(rectangleBrush);
Graphics^ g = this->CreateGraphics();
g->DrawRectangle(rectanglePen, rectangle);

B - Rectangle^ rectangle = gcnew Rectangle(10, 10, 450, 25); LinearGradientBrush^ rectangleBrush = gcnew LinearGradientBrush(rectangle, Color::AliceBlue, Color::CornflowerBlue, LinearGradientMode::ForwardDiagonal);
Pen^ rectanglePen = gcnew Pen(rectangleBrush);
Graphics^ g = this->Createsraphics();
g->FillRectangle(rectangleBrush, rectangle);

C - RectangleF^ rectangle = gcnew RectangleF(10f, 10f, 450f, 25f);
array<Point^>^ points = gcnew array<Point^>^ {gcnew Point(0, 0), gcnew Point(110, 145)};
LinearGradientBrush^ rectangleBrush = gcnew LinearGradientBrush(rectangle, Color::AliceBlue, Color::CornflowerBlue, LinearGradientMode::ForwardDiagonal);
Pen^ rectanglePen = gcnew Pen(rectangleBrush);
Graphics^ g = this->CreateGraphics();
g->DrawPolygon(rectanglePen, points);

D - RectangleF^ rectangle = gcnew RectangleF(l0f, l0f, 450f, 25f);
SolidBrush^ rectangleBrush = gcnew SolidBrush(Color::AliceBlue);
Pen^ rectanglePen = gcnew Pen(rectangleBrush);
Graphics^ g = this->CreateGraphics();
g->DrawRectangle(rectangleBrush, rectangle);

Answer: B

K8 – rectangleBrush numbers w/out F

Opera 10 'The Worlds Fastest Browser' has Good Qualities

noreply@blogger.com (Catto) — Mon, 21 Sep 2009 00:23:00 +0000

Hey Now,

Browsers are the most important program that we use. There are many browsers out there such as Firefox, IE, Safari & Chrome. Let us take a look at Opera 10, who call themselves 'The Worlds Fastest Browser'

Opera's best qualities are:

1. Early adopters new browser features – This is the reason why I really enjoy using Opera over the years. I’ve learned about new features in Opera then in year or two they become mainstream.

2. Speed, Quick, lightweight browser

3. Widgets ( ex Chuck Norris Widget )

Opera has been available for a while & has not been widely used maybe ~ 2% of the market share. Personally use Opera occasionally & like to have it installed. Opera has always been an early adopter of technology such as tabbed browsing, mouse gestures & speed dial. Now in Opera 10 there is are new features for example the ability to share your bookmarks between browsers on different computes & resizing the tab toolbar to display thumbnails of the pages.

I always felt like one reason Opera didn't have as many downloads as say IE or Firefox is a few years ago there wasn't an easy big download button on Opera's homepage such as the easy big download Java button. Instead the user had to click a link then get to the next page to find the download.

One new feature for Opera 10 is a resizable tab toolbar. It can be resized vertically to be able to view page previews. Check out the screen shot below.

So it's good to know about Opera to stay in tune with new browser features, use it if you want a quick, lightweight browser, is it going to be your default browser? Probably not.

As Always All Comments Welcome!

Catto

Microsoft Visual Studio Hotkey Shortcuts 2009 Top (N)

noreply@blogger.com (Catto) — Sun, 20 Sep 2009 00:53:00 +0000

Hey Now,

Keyboarding is very important to efficiency & hotkeys / shortcut keys are can be used many times each day to increase productivity. The way I’ve displayed my hotkeys are in a shorter list that are rated so it’s a top ten style where #1 is most used & #10 is tenth most used.

When in Visual Studio the common tasks I try to accomplish are running / debugging code, finding files in the solution explorer, using controls & their properties, using breakpoints, comments & formatting code. This list accomplishes these tasks & can be used in VS05, VS08 & VS10.

0.5 Ctrl+S, Alt+Tab, F5      Save file switch to browser & refresh combo
1 F5                                   Run with debug
1b       Ctrl F5                      Run w/out Debug
2 Ctrl+Alt + L                       Unhides Solutions Explorer
3. Ctrl + Alt + X                    Unhides Toolbox
4. F4                                   Unhides Properties
5 a. F9                               Sets Breakpoints
5 b. Ctrl + Shift + F9, Alt+Y   Removes All Breakpoints
5 c. F10, F11                       Step into, Step Over
6 a. Ctrl + K, Ctrl + C           Comments line(s)
6 b. Ctrl + k, Ctrl + U           Uncomment line(s)
7. Ctrl + Pageup / Ctrl+pagedown / F7   Split View
8 a. Shift+Alt+Enter              Full Screen
8 b. Alt + U                          Resize (not full screen boo)
9 a. Ctrl + F                         Find
9 b. Ctrl + H                        Replace
10    Ctrl K, Ctrl D                 Format Code All Pretty
11.   Ctrl M, Ctrl O                Collapse Code
12. Alt + S                           Stop internal IIS
13 a. Ctrl + Shift                  Switch Tab
13 b. Ctrl + Shift                  Switch Tab reverse

This hotkey list is compact and ordered to display hotkeys that we can use daily. Of course there are large lists of every hotkey in studio out which is just not what I wanted to concentrate on right now. From one productive efficient keyboarding fan another.

As always all comments welcome!

Bye for now,

Catto

70-536 MCTS .NET Foundations Questions #36

noreply@blogger.com (Catto) — Tue, 01 Sep 2009 01:30:00 +0000

Hey Now,

Please feel free to check out my MCTS 70-536 reference page on Chris Catto.com. It’s a page with a summary of all of my posts.
As I study for this test I thought this would be good to post on to learn the content & others would be able to view & comment on it.

This content below is from some practice questions from the internet & not sure the answers are correct. There were over 200 questions & some duplicates, I hope to study all of them. I’ve also added some of my notes to these so any line starting with K8 (my nickname, first syllable of Catt o ) are my comments.

Whew! 211 Questions reviewed!

Thx,

Catto

Q: #186 - #211

Question: 186

You are writing code for user authentication and authorization. The username, password, and roles are stored in your application data store. You need to establish a user security context that will be used for authorization checks such as IsInRole. You write the following code segment to authorize the user.

If TestPassword(UserName, Password) = False Then
Throw New Exception("Could not authenticate user")End If
Dim RolesArray() As String = LookUpUserRoles(UserName)
You need to complete this code so that it establishes the user security context. Which code segment should you use?

A. Dim objID As New GenericIdentity(UserName)
Dim objUser As New GenericPrincipal(objID, RolesArray)
Thread.CurrentPrincipal = objUser

B. Dim objID As New WindowsIdentity(UserName)
Dim objUser As New WindowsPrincipal(objID)
Thread.CurrentPrincipal = objUser

C. Dim objNT As New NTAccount(UserName)
Dim objID As New GenericIdentity(objNT.Value)
Dim objUser As New GenericPrincipal(objID, RolesArray)
Thread.CurrentPrincipal = objUser

D. Dim objToken As IntPtr = IntPtr.Zeroobj
Token = LogonUserUsingInterop(UserName, EncryptedPassword)
Dim objContext As WindowsImpersonationContext =
_WindowsIdentity.Impersonate(objToken)

Answer: A

K8 – Q: Establishes security context A: GenericIdentity GenericPrincipal

Question: 187

You need to return the contents of an isolated storage file as a string. The file is machine-scoped and is named Settings.dat. Which code segment should you use?

A. IsolatedStorageFileStream isoStream;
isoStream = new IsolatedStorageFileStream( “Settings.dat”, FileMode.Open);
string result = new StreamReader(isoStream).ReadToEnd();

B. IsolatedStorageFile isoFile;
isoFile = IsolatedStorageFile.GetMachineStoreForAssembly();
IsolatedStorageFileStream isoStream;
isoStream = new IsolatedStorageFileStream( “Settings.dat”, FileMode.Open, isoFile);
string result = new StreamReader(isoStream).ReadToEnd();

C. IsolatedStorageFileStream isoStream;
isoStream = new IsolatedStorageFileStream( “Settings.dat”, FileMode.Open);
string result = isoStream.ToString();

D. IsolatedStorageFile isoFile;
isoFile = IsolatedStorageFile.GetMachineStoreForAssembly();
IsolatedStorageFileStream isoStream;
isoStream = new IsolatedStorageFileStream( “Settings.dat”, FileMode.Open, isoFile);
string result = isoStream.ToString();

Answer: B

K8 - File Stream String to end

Question: 188

You need to write a code segment that will create a common language runtime (CLR) unit of isolation within an application. Which code segment should you use?

A. AppDomainSetup mySetup = AppDomain.CurrentDomain.SetupInformation;
mySetup.ShadowCopyFiles = “true”;

B. System.Diagnostics.Process myProcess;
myProcess = new System.Diagnostics.Process();

C. AppDomain domain;
domain = AppDomain.CreateDomain(“CompanyDomain”):

D. System.ComponentModel.Component myComponent;
myComponent = new System.ComponentModel.Component();

Answer: C

K8 – Q: CLR isolation A: Create AppDomain

Question: 189

You need to create a method to clear a Queue named q. Which code segment should you use?

A. foreach (object e in q) {
q.Dequeue();}

B. foreach (object e in q) {
Enqueue(null);}

C. q.Clear();

D. q.Dequeue();

Answer: C

K8 – ez question right?

Question: 190

You write the following code segment to call a function from the Win32 Application Programming Interface (API) by using platform invoke.

Dim PersonName as String = "N?el"
Dim Msg as String = "Welcome " + PersonName + "to club ''!"
Dim r As Boolean= User32API.MessageBox(0, Msg, PersonName, 0)
You need to define a method prototype that can best marshal the string data. Which code segment should you use?

A. <DllImport("user32", CharSet:=CharSet.Ansi)> _Public Function
MessageBox(ByVal hWnd As Int32, _ByVal text As String, ByVal caption As String, _ByVal t As UInt32) As BooleanEnd Function

B. <DllImport("user32", EntryPoint:="MessageBoxA", _CharSet:=CharSet.Ansi)>
_Public Function MessageBox(ByVal hWnd As Int32,
_<MarshalAs(UnmanagedType.LPWStr)> ByVal text As String,
_<MarshalAs(UnmanagedType.LPWStr)> ByVal caption As String, _ByVal t As UInt32) As BooleanEnd Function

C. <DllImport("user32", CharSet:=CharSet.Unicode)> _Public Function
MessageBox(ByVal hWnd As Int32, _ByVal text As String, ByVal caption As String,
_ByVal t As UInt32) As BooleanEnd Function

D. DllImport("user32", EntryPoint:="MessageBoxA", _CharSet:=CharSet.Unicode)>
_Public Function MessageBox(ByVal hWnd As Int32,

_<MarshalAs(UnmanagedType.LPWStr)> ByVal text As String,

_<MarshalAs(UnmanagedType.LPWStr)> ByVal caption As String, _ByVal t As

UInt32) As BooleanEnd Function

Answer: C

K8 – Q: Marshall String A: CharSet.Unicode

Question: 191

You are writing a method to compress an array of bytes. The bytes to be compressed are passed to the method in a parameter named document. You need to compress the contents of the incoming parameter. Which code segment should you use?

A. MemoryStream^ intStream = gcnew MemoryStream(document);
GZipStream^ zipStream = gcnew GZipStream(inStream, CompressionMode::Compress);
array<Byte>^ result = gcnew array<Byte>(document->Length);
zipStream->Write(result, 0, result->Length);
return result;

B. MemoryStream^ stream = gcnew MemoryStream(document);
GZipStream^ zipStream = gcnew GZipStream(stream,

CompressionMode::Compress);
zipStream->Write(document, 0, document- >Length);
zipStream->Close();
return stream->ToArray();

C. MemoryStream^ outStream = gcnew MemoryStream();
GZipStream^ zipStream = gcnew GZipStream(outStream,
CompressionMode::Compress);
zipStream->Write(document, 0, document->Length);
zipStream->Close();
return outStream->ToArray();

D. MemoryStream^ inStream = gcnew MemoryStream(document);
GZipStream^ zipStream = gcnew GZipStream(inStream,
CompressionMode::Compress);
MemoryStream^ outStream = gcnew MemoryStream();
int b;
while ((b = zipStream->ReadByte()) != -1) {
outStream->WriteByte((Byte)b);
} return outStream->ToArray();

Answer: C

K8 – OutStream!

Question: 192

You develop a service application named PollingService that periodically calls long-running procedures. These procedures are called from the DoWork method. You use the following service application code:

Partial Class PollingService Inherits ServiceBase
Dim blnExit As Boolean = False Protected Overrides Sub OnStart(ByVal args() As String)
Do
DoWork()
Loop While Not blnExit
End Sub
Protected Overrides Sub OnStop()
blnExit = True
End Sub
Private Sub DoWork()
End SubEnd Class

When you attempt to start the service, you receive the following error message: Could not start the PollingService service on the local computer. Error 1053: The service did not respond to the start or control request in a timely fashion. You need to modify the service application code so that the service starts properly. What should you do?

A. Move the loop code into the constructor of the service class from the OnStart method.

B. Drag a timer component onto the design surface of the service. Move the calls to the long-running procedure from the OnStart method into the Tick event procedure of the timer, set
the Enabled property of the timer to True, and call the Start method of the timer in the OnStart method.

C. Add a class-level System.Timers.Timer variable to the service class code. Move the call to the DoWork method into the Elapsed event procedure of the timer, set the Enabled property of the timer to True, and call the Start method of the timer in the OnStart method.

D. Move the loop code from the OnStart method into the DoWork method.

Answer: C

K8 - System.Timers.Timer

Question: 193

You are developing an application to assist the user in conducting electronic surveys. The survey consists of 25 true-or-false questions. You need to perform the following tasks:

Initialize each answer to true.Minimize the amount of memory used by each survey. Which storage option should you choose?

A. BitVector32 answers = new BitVector32(1);

B. BitVector32 answers = new BitVector32(-1);

C. BitArray answers = new BitArray(1);

D. BitArray answers = new BitArray(-1);

Answer: B

K8 – Q: init to true & min mem A: BitVector32(-1);

Question: 194

You create a method that runs by using the credentials of the end user. You need to use Microsoft Windows groups to authorize the user. You must add a code segment that identifies whether a user is in the local group named Clerk.
Which code segment should you use?

A. WindowsIdentity^ currentUser = WindowsIdentity::GetCurrent();
For each
(IdentityReference^ grp in currentUser->Groups) {

NTAccount^ grpAccount =
safe_cast<NTAccount^>(grp->Translate(NTAccount::typeid));
isAuthorized = grpAccount->Value->Equals(
Environment::MachineName + “\\Clerk”);
if(isAuthorized) break;}

B. WindowsPrincipal^ currentUser =
safe_cast<WindowsPrincipal^>(Thread::CurrentPrincipal);
isAuthorized = currentUser->IsInRole(“Clerk”);

C. GenericPrincipal^ currentUser = safe_cast<GenericPrincipal^>(Thread::CurrentPrincipal);
isAuthorized = currentUser->IsInRole(“Clerk”);

D. WindowsPrincipal^ currentUser = safe_cast<WindowsPrincipal^>(Thread::CurrentPrincipal);
isAuthorized = currentUser->IsInRole( Environment::MachineName);

Answer: B

K8 – Q: Identify if user is in local user group A: WindowsPrincipal IsInRole(“rolename”)

Question: 195

You are creating a class named Age. You need to ensure that the Age class is written such that collections of Age objects can be sorted. Which code segment should you use?

A. public class Age {
public int Value;
public object CompareTo(object obj) {
if (obj is Age) { Age_age = (Age) obj;
return Value.ComapreTo(obj);
}
throw new ArgumentException(“object not an Age”);
} }

B. public class Age {
public int Value;
public object CompareTo(int iValue) {
try {
return Value.ComapreTo(iValue);
} catch {
throw new ArgumentException(“object not an Age”);
} } }

C. public class Age : IComparable {
public int Value;
public int CompareTo(object obj) {
if (obj is Age) {
Age_age = (Age) obj;

return Value.ComapreTo(_age.Value);

}
throw new ArgumentException(“object not an Age”);
} }

D. public class Age : IComparable {
public int Value;
public int CompareTo(object obj) {
try {
return Value.ComapreTo(((Age) obj).Value);
} catch {
return -1;
} } }

Answer: C

K8 – Sorting w/ IComparable

Question: 196

You write a class named Employee that includes the following code segment.
public ref
class Employee{
String^ employeeId;
String^ employeeName;
String^ jobTitleName;
public: String^ GetName() { return employeeName; }
String^ GetJobTitle() { return jobTitleName; }

You need to expose this class to COM in a type library. The COM interface must also facilitate forward-compatibility across new versions of the Employee class. You need to choose a method for generating the COM interface. What should you do?

A. Add the following attribute to the class definition.[ClassInterface(ClassInterfaceType::None)]
public class Employee {

B. Add the following attribute to the class
definition.[ClassInterface(ClassInterfaceType::AutoDual)]
public class Employee {

C. Add the following attribute to the class definition.[ComVisible(true)]
public class Employee {

D. Define an interface for the class and add the following attribute to the class definition.[ClassInterface(ClassInterfaceType::None)]
public class Employee : IEmployee

{

Answer: D

K8 – Define an interface

Question: 197

You are developing a method to hash data for later verification by using the MD5 algorithm. The data is passed to your method as a byte array named message. You need to compute the hash
of the incoming parameter by using MD5. You also need to place the result into a byte array. Which code segment should you use?

A. HashAlgorithm ^algo = HashAlgorithm::Create(“MD5”);
hash = algo->CompueHash(message);

B. HashAlgorithm ^algo = HashAlgorithm::Create(“MD5”);
hash = BitConverter::GetBytes(algo->GetHashCode());

C. HashAlgorithm ^algo;
algo = HashAlgorithm::Create(message->ToString());
hash = algo->Hash;

D. HashAlgorithm ^algo = HashAlgorithm::Create(“MD5”);
hash = nullptr;
algo->TransformBlock(message, 0, message->Length, hash, 0);

Answer: A

K8 – Q: Compute Hash A: ComputeHash

70-536 MCTS .NET Foundations Questions #35

noreply@blogger.com (Catto) — Sun, 30 Aug 2009 01:43:00 +0000

Hey Now,

Thx,

Catto

Q: #176 - #185

Question: 176

You develop a service application named FileService. You deploy the service application to multiple servers on your network. You implement the following code segment. (Line numbers are included for reference only.)

01 public :
02 void StartService(String^ serverName){
03
04 ServiceController^ crtl = gcnew
05 ServiceController(“FileService”);
06 if (crtl->Status == ServiceControllerStatus::Stopped){}
07 }

You need to develop a routine that will start FileService if it stops. The routine must start FileService on the server identified by the serverName input parameter. Which two lines of code should you add to the code segment? (Each correct answer presents part of the solution. Choose two.)

A. Insert the following line of code between lines 03 and 04:crtl.ServiceName = serverName;

B. Insert the following line of code between lines 03 and 04:crtl.MachineName = serverName;

C. Insert the following line of code between lines 03 and 04:crtl.Site.Name = serverName;

D. Insert the following line of code between lines 04 and 05:crtl.Continue();

E. Insert the following line of code between lines 04 and 05:crtl.Start();

F. Insert the following line of code between lines 04 and 05:crtl.ExecuteCommand(0);

Answer: B, E

K8 – Repeated questions are easier the 4^th time. Crtl.MachineName = serverName & crtl.Start()

Question: 177

You are changing the security settings of a file named MyData.xml. You need to preserve the existing inherited access rules. You also need to prevent the access rules from inheriting changes in the future. Which code segment should you use?

A. FileSecurity security = new FileSecurity("mydata.xml", AccessControlSections.All);
security.SetAccessRuleProtection(true, true);
File.SetAccessControl(“mydata.xml”, security);

B. FileSecurity security = new FileSecurity();
security.SetAccessRuleProtection(true, true);
File.SetAccessControl(“mydata.xml”, security);

C. FileSecurity security = File.GetAccessControl(“mydata.xml”);
security.SetAccessRuleProtection(true, true);

D. FileSecurity security = File.GetAccessControl(“mydata.xml”);
security.SetAuditRuleProtection(true, true);
File.SetAccessControl(“mydata.xml”, security);

Answer: A

K8 – FileSecurity & AccessControlSections

Question: 178

You write the following code to implement the CompanyClass.MyMethod function.
public class CompanyClass {
public int MyMethod(int arg) {
return arg;
}}

You need to call the CompanyClass.MyMethod function dynamically from an unrelated class in your assembly. Which code segment should you use?

A. CompanyClass^ myClass = gcnew CompanyClass();
Type^ t = CompanyClass::typeid;
MethodInfo^m = t->GetMethod(“MyMethod”);
int i = (int)m->Invoke(this, gcnew array<Object^> {1});

B. CompanyClass^ myClass = gcnew CompanyClass();
Type^ t = CompanyClass::typeid;
MethodInfo^m = t->GetMethod(“MyMethod”);
int i = (int)m->Invoke(myClass, gcnew array<Object^> {1});

C. CompanyClass^ myClass = gcnew CompanyClass();
Type^ t = CompanyClass::typeid;
MethodInfo^m = t->GetMethod(“CompanyClass.MyMethod”);
int i = (int)m->Invoke(myClass, gcnew array<Object^> {1});

D. Type^ t =Type::GetType(“CompanyClass”);
MethodInfo^m = t->GetMethod(“MyMethod”);
int i = (int)m->Invoke(this, gcnew array<Object^> {1});

Answer: B

K8 – Q: Call function dynamically.

Question: 179

You are creating a class to compare a specially-formatted string. The default collation comparisons do not apply. You need to implement the IComparable<string> interface.
Which code segment should you use?

A. public class Person : IComparable<string>{
public int CompareTo(string other){
}}

B. public class Person : IComparable<string>{
public int CompareTo(object other){
}}

C. public class Person : IComparable<string>{
public bool CompareTo(string other){
}}

D. public class Person : IComparable<string>{
public bool CompareTo(object other){
}}

Answer: A

K8 – Compare special string A: int CompareTo(string

Question: 180

You are writing a custom dictionary. The custom-dictionary class is named MyDictionary. You need to ensure that the dictionary is type safe. Which code segment should you use?

A. public ref class MYDictionary : public Dictionary<String^, String^>{};

B. public ref class MYDictionary : public Hashtable{};

C. public ref class MYDictionary : public IDictionary{};

D. public ref class MYDictionary {};Distionary<String^, String^>t = gcnew Dictionary<String^, String^>();
MyDictionary dictionary = (MyDictionary)t;

Answer: A

K8 – Type Safe so use <String>

Question: 181

You are developing a utility screen for a new client application. The utility screen displays a thermometer that conveys the current status of processes being carried out by the application.

You need to draw a rectangle on the screen to serve as the background of the thermometer as shown in the exhibit. The rectangle must be filled with gradient shading. Which code segment should you choose?

Exhibit:

A. Dim objRect As New Rectangle(10, 10, 450, 25)
Dim objBrush As New LinearGradientBrush( _objRect, Color.AliceBlue, Color.CornflowerBlue, _LinearGradientMode.ForwardDiagonal)
Dim objPen As New Pen(objBrush)Dim g As Graphics =
myForm.CreateGraphicsg.DrawRectangle(objPen, objRect)

B. Dim objRect As New Rectangle(10, 10, 450, 25)
Dim objBrush As New LinearGradientBrush( _
objRect, Color.AliceBlue, Color.CornflowerBlue, _
LinearGradientMode.ForwardDiagonal)
Dim objPen As New Pen(objBrush)
Dim g As Graphics = myForm.CreateGraphicsg.FillRectangle(objBrush, objRect)

C. Dim objRect As New RectangleF(10.0F, 10.0F, 450.0F, 25.0F)
Dim points() As System.Drawing.Point = _
{New Point(0, 0), New Point(110, 145)}
Dim objBrush As New LinearGradientBrush( _
objRect, Color.AliceBlue, Color.CornflowerBlue, _
LinearGradientMode.ForwardDiagonal)
Dim objPen As New Pen(objBrush)
Dim g As Graphics = myForm.CreateGraphicsg.DrawPolygon(objPen, points)

D. Dim objRect As New Rectangle(10, 10, 450, 25)
Dim objBrush As New SolidBrush(Color.AliceBlue)
Dim objPen As New Pen(objBrush)Dim g As Graphics =
myForm.CreateGraphicsg.DrawRectangle(objPen, objRect)

Answer: B

K8 - Gradient Brush object.

Question: 182

You are developing a method to call a COM component. You need to use declarative security to explicitly request the runtime to perform a full stack walk. You must ensure that all callers have the required level of trust for COM interop before the callers execute your method. Which attribute should you place on the method?

A. [SecurityPermission(
SecurityAction.Demand,
Flags=SecurityPermissionFlag.UnmanagedCode)]

B. [SecurityPermission(
SecurityAction.LinkDemand,
Flags=SecurityPermissionFlag.UnmanagedCode)]

C. [SecurityPermission(
SecurityAction.Assert,
Flags = SecurityPermissionFlag.UnmanagedCode)]

D. [SecurityPermission(
SecurityAction.Deny,
Flags = SecurityPermissionFlag.UnmanagedCode)]

Answer: A

K8 – All callers have required trust A: Demand

Question: 183

You are writing a method that returns an ArrayList named al. You need to ensure that changes to the ArrayList are performed in a thread-safe manner. Which code segment should you use?

A. ArrayList al = new ArrayList();
lock (al.SyncRoot){
return al;}

B. ArrayList al = new ArrayList();
lock (al.SyncRoot.GetType()){
return al;}

C. ArrayList al = new ArrayList();
Monitor.Enter(al);Monitor.Exit(al);return al;

D. ArrayList al = new ArrayList();
ArrayList sync_al = ArrayList.Synchronized(al);
return sync_al;

Answer: D

K8 – Q: Changes to ArrayList Thread safe A: ArrayList sync_al

Question: 184

You are loading a new assembly into an application. You need to override the default evidence for the assembly. You require the common language runtime (CLR) to grant the assembly a permission set, as if the assembly were loaded from the local intranet zone. You need to build the evidence collection. Which code segment should you use?

A. Dim objEvidence As New Evidence( _
Assembly.GetExecutingAssembly.Evidence

B. Dim objEvidence As New EvidenceobjEvidence.AddAssembly( _
New Zone(SecurityZone.Intranet))

C. Dim objEvidence As New EvidenceobjEvidence.AddHost( _
New Zone(SecurityZone.Intranet))

D. Dim objEvidence As New Evidence( _

AppDomain.CurrentDomain.Evidence)

Answer: C

K8 Q: Grant Assembly permission A: AddHost

Question: 185

You are creating an application that lists processes on remote computers. The application requires a method that performs the following tasks: Accept the remote computer name as a string parameter named strComputer.Return an ArrayList object that contains the names of all processes that are running on that computer. You need to write a code segment that retrieves the name of each process that is running on the remote computer and adds the name to the ArrayList
object. Which code segment should you use?

A. ArrayList al = new ArrayList();
Process[] procs = Process.GetProcessesByName(s trComputer);
foreach (Process proc in procs) {
al.Add(proc);}

B. ArrayList al = new ArrayList();
Process[] procs = Process.GetProcesses(strComputer);
foreach (Process proc in procs) {
al.Add(proc);}

C. ArrayList al = new ArrayList();
Process[] procs = Process.GetProcessesByName(s trComputer);
foreach (Process proc in procs) {
al.Add(proc.ProcessName);}

D. ArrayList al = new ArrayList();
Process[] procs = Process.GetProcesses(strComputer);
foreach (Process proc in procs) {
al.Add(proc.ProcessName);}

Answer: D

K8 Get Process

70-536 MCTS .NET Foundations Questions #34

noreply@blogger.com (Catto) — Sat, 29 Aug 2009 04:17:00 +0000

Hey Now,

Thx,

Catto

#167 - #175

Question: 167

You create a class library that is used by applications in three departments of your company. The library contains a Department class with the following definition.

Public Class Department

Public name As String

Public manager As String

End Class

Each application uses a custom configuration section to store department-specific values in the application configuration file as shown in the following code.

<name>Hardware</name>

<manager>Company</manager>

</Department>

You need to write a code segment that creates a Department object instance by using the field values retrieved from the application configuration file. Which code segment should you use?

A. Public Class deptElement
Inherits ConfigurationElement
Protected Overrides Sub DeserializeElement( _
ByVal reader As XmlReader, _
ByVal serializeCollectionKey As Boolean)
Dim dept As Department = New Department()
dept.name = ConfigurationManager.AppSettings("name")
dept.manager = _
ConfigurationManager.AppSettings("manager")
End Sub
End Class

B. Public Class deptElement
Inherits ConfigurationElement
Protected Overrides Sub DeserializeElement( _
ByVal reader As XmlReader, _
ByVal serializeCollectionKey As Boolean)
Dim dept As Department = New Department()
dept.name = reader.GetAttribute("name")
dept.manager = reader.GetAttribute("manager")
End Sub
End Class

C. Public Class deptHandler
Implements IConfigurationSectionHandler
Public Function Create(ByVal parent As Object, _
ByVal configContext As Object, _
ByVal section As System.Xml.XmlNode) As Object _
Implements IConfigurationSectionHandler.Create
Dim dept As Department = new Department()
dept.name = section.SelectSingleNode("name").InnerText
dept.manager = _
section.SelectSingleNode("manager").InnerText
Return dept
End Function
End Class

D. Public Class deptHandler
Implements IConfigurationSectionHandler
Public Function Create(ByVal parent As Object, _
ByVal configContext As Object, _
ByVal section As System.Xml.XmlNode) As Object _
Implements IConfigurationSectionHandler.Create
Dim dept As Department = new Department()
dept.name = section.Attributes("name").Value
dept.manager = section.Attributes("manager").Value
Return dept
End Function
End Class

Answer: C

K8 – A: IconfigurationSectionHandler & SelectSingleNode

Question: 168

You are writing a method that returns an ArrayList named al. You need to ensure that changes to the ArrayList are performed in a thread-safe manner. Which code segment should you use?

A. ArrayList^ al = gcnew ArrayList();
lock (al->SyncRoot){
return al;}

B. ArrayList^ al = gcnew ArrayList();
lock (al->SyncRoot.GetType()){
return al;}

C. ArrayList^ al = gcnew ArrayList();
Monitor::Enter(al);
Monitor::Exit(al);
return al;

D. ArrayList^ al = gcnew ArrayList();
ArrayList^ sync_al = ArrayList::Synchronized(al);
return sync_al;

Answer: D

K8 – Q: Thread safe manner to changes in array list A: Synchronized

Question: 169

You need to write a code segment that transfers the contents of a byte array named dataToSend by using a NetworkStream object named netStream. You need to use a cache of size 8,192 bytes. Which code segment should you use?

A. Dim memStream As New MemoryStream(8192)memStream.Write(dataToSend, 0, _
CType(netStream.Length, Integer))

B. Dim memStream As New MemoryStream(8192)netStream.Write(dataToSend, 0, _
CType(memStream.Length, Integer))

C. Dim bufStream As New BufferedStream(netStream, 8192)
bufStream.Write(dataToSend, 0, dataToSend.Length)

D. Dim bufStream As New BufferedStream(netStream)
bufStream.Write(dataToSend, 0, 8192)

Answer: C

K8 – BufferedStream(networkStream, CasheBytes)

Question: 170

You are creating an undo buffer that stores data modifications. You need to ensure that the undo functionality undoes the most recent data modifications first. You also need to ensure that the undo buffer permits the storage of strings only. Which code segment should you use?

A. Dim undoBuffer As New Stack(Of String)

B. Dim undoBuffer As New Stack()

C. Dim undoBuffer As New Queue(Of String)

D. Dim undoBuffer As New Queue()

Answer: A

K8 – Stack Last in first out combied with of string this is VB version

Question: 171

You are creating an undo buffer that stores data modifications. You need to ensure that the undo functionality undoes the most recent data modifications first. You also need to ensure that the undo buffer permits the storage of strings only. Which code segment should you use?

A. Stack<string> undoBuffer = new Stack<string>();

B. Stack undoBuffer = new Stack();

C. Queue<string> undoBuffer = new Queue<string>();

D. Queue undoBuffer = new Queue();

Answer: A

K8 – Stack Last in first out combied with of string C#

Question: 172

You create the definition for a Vehicle class by using the following code segment.

public class Vehicle {
[XmlAttribute(AttributeName = "category")]
public string vehicleType;
public string model;
[XmlIgnore]
public int year;
[XmlElement(ElementName = "mileage")]
public int miles;
public ConditionType condition;
public Vehicle() {
}
public enum ConditionType {
[XmlEnum("Poor")] BelowAverage,
[XmlEnum("Good")] Average,
[XmlEnum("Excellent")] AboveAverage
}}

You create an instance of the Vehicle class. You populate the public fields of the Vehicle class instance as shown in the following table:

MemberValuevehicleTypecarmodelraceryear2002miles15000conditionAboveAverage You need to identify the XML block that is produced when this Vehicle class instance is serialized. Which block of XML represents the output of serializing the Vehicle instance?

A. <?xml version="1.0" encoding="utf-8"?>
<Vehicle xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema""
vehicleType="car">
<model>racer</model>
<miles>15000</miles>
<condition>AboveAverage</condition>
</Vehicle>
B. <?xml version="1.0" encoding="utf-8"?>
<Vehicle
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"

category="car">
<model>racer</model>
<mileage>15000</mileage>
<condition>Excellent</condition>
</Vehicle>

C. <?xml version="1.0" encoding="utf-8"?>
<Vehicle xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"
category="car">
<model>racer</model>
<mileage>15000</mileage>
<conditionType>Excellent</conditionType>
</Vehicle>

D. <?xml version="1.0" encoding="utf-8"?>
<Vehicle xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<category>car</category>
<model>racer</model>
<mileage>15000</mileage>
<condition>Excellent</condition>
</Vehicle>

Answer: B

K8 – Car category along with condition Excellent.

Question: 173

You need to write a code segment that transfers the first 80 bytes from a stream variable named stream1 into a new byte array named byteArray. You also need to ensure that the code segment assigns the number of bytes that are transferred to an integer variable named bytesTransferred. Which code segment should you use?

A. bytesTransferred = stream1.Read(byteArray, 0, 80)

B. For i As Integer = 1 To 80
stream1.WriteByte(byteArray(i))
bytesTransferred = i
If Not stream1.CanWrite Then
Exit For
End IfNext

C. While bytesTransferred < 80
stream1.Seek(1, SeekOrigin.Current)
byteArray(bytesTransferred) = _
Convert.ToByte(stream1.ReadByte())bytesTransferred += 1End While

D. stream1.Write(byteArray, 0, 80)bytesTransferred = byteArray.Length

Answer: A

K8 – Bytes transferred with no loop

Question: 174

You are changing the security settings of a file named MyData.xml. You need to preserve the existing inherited access rules. You also need to prevent the access rules from inheriting changes in the future. Which code segment should you use?

A. FileSecurity^ security = gcnew FileSecurity(“mydata.xml”, AccessControlSections::All);
security->SetAccessRuleProtection( true, true);
File::SetAccessControl(“mydata.xml”, security);

B. FileSecurity^ security = gcnew FileSecurity();
security->SetAccess RuleProtection(true,true);
File::SetAccessControl(“mydata.xml”, security);

C. FileSecurity^ security = File::GetAccessControl(“mydata.xml”);
security->SetAccessRuleProtection(true, true);

D. FileSecurity^ security =
File::GetAccessControl(“mydata.xml”);security->SetAuditRuleProtection(true, true);
File::SetAccessControl(“mydata.xml”, security);

Answer: A

K8 – Change Security Settings … FileSecurity

Question: 175

You are testing a component that serializes the Meeting class instances so that they can be saved to the file system. The Meeting class has the following definition:

public class Meeting {
private string title;
public int roomNumber;
public string[] invitees;
public Meeting(){
}
public Meeting(string t){
title = t;
} }

The component contains a procedure with the following code segment.
Meeting myMeeting = new Meeting(“Goals”);
myMeeting.roomNumber = 1100;
string[] attendees = new string[2]{“Company”, “Mary”};
myMeeting.invitees = attendees;
XmlSerializer xs = new XmlSerializer(typeof(Meeting));
StreamWriter writer = new StreamWriter(@"C:\Meeting.xml");
Xs.Serialize(writer, myMeeting);
writer.Close();

You need to identify the XML block that is written to the C:\Meeting.xml file as a result of running this procedure. Which XML block represents the content that will be written to the C:\Meeting.xml file?

A. <?xml version="1.0" encoding="utf-8"?>
<Meeting xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<title>Goals</title>
<roomNumber>1100</roomNumber>
<invitee>Company</invitee>
<invitee>Mary</invitee>
</Meeting>

B. <?xml version="1.0" encoding="utf-8"?>
<Meeting xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<roomNumber>1100</roomNumber>
<invitees>
<string>Company</string>
<string>Mary</string>
</invitees>
</Meeting>

C. <?xml version="1.0" encoding="utf-8"?>
<Meeting xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
title="Goals">
<roomNumber>1100</roomNumber> <invitees>
<string>Company</string>
<string>Mary</string>
</invitees>
</Meeting>

D. <?xml version="1.0" encoding="utf-8"?>
<Meeting xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <roomNumber>1100</roomNumber>
<invitees>
<string>Company</string>
</invitees>
<invitees>
<string>Mary</string>
</invitees>
</Meeting>

Answer: B

K8 – XML

70-536 MCTS .NET 2.0 Configuration #33

noreply@blogger.com (Catto) — Sat, 29 Aug 2009 02:40:00 +0000

Hey Now Everybody,

This content below is from section #3 of the exam.NET 2.0 Configuration Debug!.

Thx,

Catto

3. Embedding configuration, diagnostic, management & installation features

Code

1. Which of the following configuration files shows the best way to define a database connection string in an application configuration file?

<?xml version="1.0" encoding="utf-8" ?>

<connectionStrings>

<add name="AdventureWorksString" providerName="System.Data.SqlClient"

connectionString="Data Source=localhost;Initial Catalog=AdventureWorks; Integrated Security=true"/>

</connectionStrings>

</configuration>

Explanation:

The .NET Framework 2.0 adds support for the <connectionStrings> configuration section for defining database connection information. Define this section within the <configuration> section using the <add> element with properties of name, providerName, and connectionString.

While you can define database connection information in the appSettings section (and you had no choice in earlier versions of the .NET Framework), your best choice is to use the strongly-typed <connectionStrings> section.

2. You are writing an application that requires the user to open a second application named "Application.exe", make a configuration change, and then close the application. You want to automatically launch the application for the user, and then wait indefinitely until the user closes the application. Which of the following code samples accomplishes this?

' VB

Dim p As Process = New Process

p.StartInfo.FileName = "Application.exe"

p.Start

p.WaitForExit

Explanation:

To launch a new process, first create an instance of the Process class, and then specify the Process.StartInfo.FileName property. Finally, call the Process.Start method. To stop processing until the application closes, call the Process.WaitForExit method without specifying a time.

You cannot specify an application filename in the Process constructor.

Specifying a time for the Process.WaitForExit method causes the runtime to continue execution after the specified time even if the application hasn't closed.

You cannot specify an application filename in the Process constructor. Additionally, specifying a time for the Process.WaitForExit method causes the runtime to continue execution after the specified time even if the application hasn't closed.

3. As part of a troubleshooting tool for the systems administrators at your organization, you are writing a command-line tool that automatically kills any unresponsive applications. Which of the following code samples accomplishes this?

' VB

For Each p As Process In Process.GetProcesses

If Not p.Responding Then

p.Kill

End If

Explanation: First, you must retrieve an array of all processes by calling Process.GetProcesses. Then you should call Process.Kill for each process that you need to terminate.

There is no Process.GetUnresponsiveProcesses method, and Process.Kill is not a static method.

4. You are creating a tool for the IT department that displays the MAC address and description of every network adapter on a remote computer with the IP address 192.168.1.200. Which of the following code samples does this correctly?

' VB

Dim ms As ManagementScope = New ManagementScope("\\192.168.1.200\root\cimv2")

Dim oq As ObjectQuery = New ObjectQuery("SELECT * FROM Win32_NetworkAdapterConfiguration")

Dim mos As ManagementObjectSearcher = New ManagementObjectSearcher(ms, oq)

Dim moc As ManagementObjectCollection = mos.Get

For Each mo As ManagementObject In moc

Console.WriteLine(mo("MacAddress") + ": " + mo("Description"))

Explanation:

To query running network adapters on a remote computer:

1. Create a ManagementScope object to define the remote computer. The scope is not simply the computer name, however. It must be in the form "\\computername\root\cim2".

2. Create an instance of ObjectQuery using a Windows Management Instrumentation (WMI) query. The WMI query must be in the form "SELECT fields FROM Win32_NetworkAdapterConfiguration".

3. Create an instance of ManagementObjectSearcher by providing both the scope and the query.

4. Create an instance of ManagementObjectCollection by calling the ManagementObjectSearcher.Get method.

You can then iterate through the ManagementObjects in the ManagementObjectCollection to examine individual network adapters.

You can create a ConnectionsOptions object if you want to specify a username and password. However, you cannot use a ConnectionsOptions object in place of a ManagementScope object.

5. You are writing an application that communicates with a database. You need to be able to communicate with any type of database configured by the system administrator. Systems administrators can choose either a Microsoft SQL Server, Oracle, OleDB, or ODBC connection. Which of the following code samples would establish a database connection named db to any of those database types?

' VB

Dim css As ConnectionStringSettings = ConfigurationManager.ConnectionStrings(0)

Dim db As IDBConnection = Nothing

Select css.ProviderName

Case "System.Data.SqlClient"

db = New SqlConnection(css.ConnectionString)

' break

Case "System.Data.OracleClient"

db = New OracleConnection(css.ConnectionString)

' break

Case "System.Data.OleDb"

db = New OleDbConnection(css.ConnectionString)

' break

Case "System.Data.Odbc"

db = New OdbcConnection(css.ConnectionString)

' break

End Select

Explanation:

To determine the database type based on a ConnectionStringSettings object, examine ConnectionStringSettings.ProviderName.

ConnectionStringSettings.Name stores the server name, not the database type.

ConnectionStringSettings.ConnectionString stores the entire connection string, which does not include the database type.

ConnectionStringSettings.ElementInformation.Type describes the type of element, which will always be System.Configuration.ConnectionStringSettings.

6. You are writing an application that stores window state in the application's configuration file. Given the following configuration file, which of the following code samples correctly tests the IsMaximized element in a .NET Framework 2.0 application? (Choose all that apply.)

<?xml version="1.0" encoding="utf-8" ?>

</appSettings>

</configuration>

Answer ' VB

If ConfigurationManager.AppSettings("IsMaximized") = "True" Then

' VB

If ConfigurationManager.AppSettings.Get("IsMaximized") = "True" Then

Explanation:

The ConfigurationManager.AppSettings collection provides access to elements defined in the <appSettings> section of a configuration file. Because it is a collection, you can access elements as an

array or by using the Get method.

The ConfigurationSettings class is obsolete in the .NET Framework 2.0.

ConfigurationManager does not contain AppSettings elements. You must access ConfigurationManager.AppSettings instead.

7. Which of the following configuration files correctly defines the information required to connect to a database by defining the first element of ConfigurationManager.ConnectionStrings regardless of other configuration files that might exist?

<?xml version="1.0" encoding="utf-8" ?>

<clear/>

<add name="AdventureWorksString"

providerName="System.Data.SqlClient"

connectionString="Data Source=localhost;Initial Catalog=AdventureWorks; Integrated Security=true"/>

</connectionStrings>

</configuration>

Explanation:

To define the first element of ConfigurationManager.ConnectionStrings, you must include the <clear/> element, which removes any existing <connectionStrings> elements. You must set the providerName attribute to the database type, such as System.Data.SqlClient. The Name element is a friendly name used to refer to that specific connection string.

8. Which of the following code samples successfully writes the entire contents of the Application log to the console?

' VB

Dim el As New EventLog()

el.Log = "Application"

For Each ele As EventLogEntry In el.Entries

Console.WriteLine(ele.Source + ": " + ele.Message)

Explanation: To read an entire log file, create an instance of the EventLog class, specify the EventLog.Log property, and then iterate through EventLog.Entries. EventLog.Entries is an EventLogEntryCollection property containing EventLogEntry objects.

9. While performing a security review of a peer's code, you see an If statement that checks the ConfigurationManager.AppSettings("username") value and grants additional privileges if it is equal to "Tom". You need to test the behavior, but the application does not currently have a configuration file. How would you create the configuration file to define that value?

<?xml version="1.0" encoding="utf-8" ?>

<appSettings>

<add key="username" value="Tom"/>

</appSettings>

</configuration>

Explanation:

Elements accessed through ConfigurationManager.AppSettings must be defined in the application configuration file, in an <appSettings> element nested within <configuration>. To define a specific

key, use the <add key> element.

10. You are writing an application that communicates with a database. The connection string is stored in the application configuration file. Which of the following would correctly retrieve the connection string?

' VB

ConfigurationManager.ConnectionStrings(0).ConnectionString

Explanation: ConfigurationManager.ConnectionStrings is a collection of type ConnectionStringSettingsCollection that contains the connection strings loaded from the application's configuration file. Because it is a collection, you must access it using an index. ConfigurationSettings, which is obsolete, does not contain a ConnectionStrings property.

11. You have created a custom event log for your application. Your application provides tools for managing the event log, and one of the methods you need to implement clears all events from the event log. Which of the following code samples would do this?

' VB

Public Sub ClearEventLog()

Dim el As New EventLog("MyApp")

el.Source = "DemoApp"

el.Clear()

End Sub

Explanation: To clear an event log, create an EventLog object and specify the EventLog.Source property. Then call EventLog.Clear.

There is no EventLog.Commit or EventLog.Log.Clear method.

Iterating through EventLogEntry objects and calling EventLogEntry.Dispose would not remove the events from the event log; it would only destroy the instances of the EventLogEntry objects created

in the runtime.

12. Which of the following code samples correctly displays the modules loaded by Application.exe?

' VB

Dim p As Process = New Process

p.StartInfo.FileName = "Application.exe"

p.Start

For Each m As ProcessModule In p.Modules

Console.WriteLine(m.FileName)

Explanation: To retrieve a list of modules loaded by a process, access the ProcessModule array in Process.Modules.

Process.Modules is an array of ProcessModule objects, not ProcessModuleCollection, and Process.Modules is not a static method.

13. As a favor to your IT department, you are writing a console application that outputs information related to the security of the current computer. Which of the following code samples correctly displays running services?

' VB

Dim oq As New ObjectQuery("SELECT Caption FROM Win32_Service WHERE Started = TRUE")

Dim mos As New ManagementObjectSearcher(oq)

Dim moc As ManagementObjectCollection = mos.Get

For Each mo As ManagementObject In moc

Console.WriteLine(mo("Caption").ToString())

Explanation:

To query running services:

1. Create an instance of ObjectQuery using a Windows Management Instrumentation (WMI) query. The WMI query must be in the form "SELECT fields FROM Win32_Service WHERE criteria". In this case, the criteria must be "WHERE Started = True" to return services that have started.

2. Create an instance of ManagementObjectSearcher based on the query.

3. Next, create an instance of ManagementObjectCollection by calling the ManagementObjectSearcher.Get method.

You can then iterate through the ManagementObjects in the ManagementObjectCollection to examine individual services.

ManagementObjectSearcher.Query is a property used to define the query; it is not a method. You must use ManagementObjectSearcher.Get to run a query.

14. You need to establish a database connection to a server based on configuration information stored in the application's configuration file. Which of the following properties would you examine to determine the server name?

Answer: ConnectionStringSettings.Name

Explanation:

ConnectionStringSettings.Name stores the server name.

The ConnectionStringSettings.ProviderName describes the database type and allows you to distinguish between Oracle, SQL Server, and other databases.

ConnectionStringSettings.ConnectionString stores the entire connection string, which does not include the server name.

ConnectionStringSettings.ElementInformation.Properties contains all the attributes that apply to the element. It does not normally include a Name element.

15. Which class would you use to programmatically access the connection strings stored in the following configuration file?

<?xml version="1.0" encoding="utf-8" ?>

<add name="AdventureWorksString"

providerName="System.Data.SqlClient" connectionString="Data Source=localhost;Initial Catalog=AdventureWorks; Integrated Security=true"/>

<add name="OdbcConnectionString"

providerName="System.Data.Odbc"

connectionString="Driver={Microsoft Access Driver (*.mdb)};Dbq=C:\adatabase.mdb;Uid=Admin;Pwd=R3m3emberToUseStrongPasswords;"/>

</connectionStrings>

</configuration>

Answer: ConfigurationManager.ConnectionStrings

Explaination:

Use ConfigurationManager.ConnectionStrings to access database connection strings

16. You are writing an application that performs long-running calculations. To minimize the impact on the responsiveness of the user's computer, you want to warn the user if your application is running at Normal or higher priority. Which of the following code samples accomplishes this?

' VB

If Process.GetCurrentProcess.BasePriority >= 8 Then

Console.WriteLine("For best results, run this application at low priority.")

End If

Explanation: You should examine the Process.GetCurrentProcess().BasePriority property. A value of 4 is considered low priority, 8 is normal priority, 13 is high priority, and 24 is real-time priority. Therefore, a value of 8 or higher indicates the current application is running at Normal priority.

There is no Process.BasePriority.IsNormal property.

There is no Process.BasePriority.IsLow property.

Checking Process.GetCurrentProcess().BasePriority for a value of 4 or higher would be true even if the process were running as a low priority.

17. You are writing an application that remembers a username in the application settings. Which of the following code samples is the best way to retrieve a username?

' VB

Dim nvc As NameValueCollection = ConfigurationManager.AppSettings

Dim un As String = nvc("username")

Explanation: When writing assemblies for the .NET Framework version 2.0, you should use ConfigurationManager.AppSettings instead of ConfigurationSettings.AppSettings. ConfigurationSettings is now obsolete, and using it will result in a compiler warning.

ConfigurationManager.AppSettings does not have a GetSetting method.

18. You are in the process of isolating a complicated bug in a console application that occurs only in rare circumstances. You want to be able to write messages to the Output window in Microsoft Visual Studio 2005, as shown in the following figure. Which of the following code samples accomplishes this by writing the message, "Entering main processing loop"?

Answer:

' VB

Dim dtl As New DefaultTraceListener

Trace.Listeners.Add(dtl)

Debugger.Log(2, "Information", "Entering main processing loop")

Explanation: To write information to the Output window, first create an instance of DefaultTraceListener. Then add it to the Trace.Listeners collection. Finally, call Debugger.Log to write the message. Debugger.Log takes three parameters: a level, a category, and a message. The third parameter is the message that appears in the Output window.

There is no Trace.Listeners.Log method.

19. You need to provide users with a list of network drives so that they can choose where to store a file. Which of the following code samples correctly displays network drives and available space?

' VB

Dim oq As New ObjectQuery("SELECT Size, Name FROM Win32_LogicalDisk where DriveType=4")

Dim mos As New ManagementObjectSearcher(oq)

Dim moc As ManagementObjectCollection = mos.Get

For Each mo As ManagementObject In moc

Console.WriteLine(mo("Name").ToString() + ", Free Space: " + mo("Size").ToString())

Explanation:

To query available drives:

1. Create an instance of ObjectQuery using a Windows Management Instrumentation (WMI) query. The WMI query must be in the form "SELECT fields FROM Win32_LogicalDisk WHERE criteria".

2. Create an instance of ManagementObjectSearcher based on the query.

3. Create an instance of ManagementObjectCollection by calling the ManagementObjectSearcher.Get method.

You can then iterate through the ManagementObjects in the ManagementObjectCollection to examine individual drives.

ManagementObjectSearcher.Get is not a static method; you must create an instance to use it.

Installer class: The following steps need to be taken to use a class derived from the Installer class:
- * Inherit the Installer class.
- * Override the Install, Commit, Rollback, and Uninstall methods.
- * Add the RunInstallerAttribute to your derived class, and set it to true.
- * Put your derived class in the assembly with your application to install.
- * Invoke the installers.

The Installer class does not have OnInstall, OnCommit, OnRollback, or OnUninstall methods.

To uninstall the installation, only the following tasks need to be done:
- 1. Create a new AssemblyInstaller or ComponentInstaller object.
- 2. Specify the name of the assembly or application.
- 3. Call the Uninstall method.

The Rollback method is used to cancel an installation that is in progress before it is committed. The Commit method finalizes an installation.

EventLogEntry.InstanceId, in the .NET Framework version 2.0, defines the Event ID number shown in the Event Log console.
- EventLogEntry.EventID was used to define the Event ID in the .NET Framework versions 1.0 and 1.1; however, it is now obsolete.
- EventLogEntry.Index gets the index of an event in the Event Log.
- EventLogEntry.Source gets the name of the application that generated the event.
To wait for a management event:

1. Create a new ManagementEventWatcher object.

2. Associate an EventQuery object with the ManagementEventWatcher object.

3. Call the ManagementEventWatcher.WaitForNextEvent method.

4. Call the ManagementEventWatcher.Stop method.

You do not need to call the ManagementEventWatcher.Start method when calling ManagementEventWatcher.WaitForNextEvent. You only need to call ManagementEventWatcher.Start when

registering an event handler.
When writing an Application that must perform event logging, the correct time to create an event source is during installation.

o You should create a new event source durning app installation. This will require the user to have admin privileges.

o You only need to create an event source once. Therefore, it is unnecessary to create it before each event.

o You should create a new event source during application installation, rather than before you write the first event.

· Application that performs event logging are supported by the following OS’

o Windows Server 2003

o Windows XP

· OnBeforeInstall – is the method of the installer class which is called first when installing an app.

o When installing an app, methods are called in the following order: OnBeforeInstaller, Install, OnAfterInstall, OnCommiting, Commit, & finally Oncommitted

Debug.Assert – evaluates a condition & displays a message to the debugging output window. Debug methods do not run in release code. Ex. To assist w/ debugging, you want to write an output message if a configuration setting has not been defined. You do not want to waste processing time in released code. You should use the Debug.Assert method
- Debug.Fail causes the debugger to break @ the line of code & output a failure message.
- Debug.Flush flushes the debug output buffer
- Debug.Indent controls the output formatting
Debugger.Break – acts just like a hard-coded breakpoint, except you can call it programmatically. You would like to pause execution to examine the value of variables during debugging, but you do not want to pause execution when users run release versions of the app. You should use the Debugger.Break method.
- Console.Read & Console.ReadLine interrupt processing in both debug & release versions of code.
- Debug.Assert validates a value & does not stop execution during debugging.
Application configuration files should be located in the same folder as the executable file & named <filename.exe> config. ex. You are writing a windows form app called MyApp. You need to define application settings & database connection strings in a custom configuration file in the same folder as your MyApp.exe file You should name the configuration file MyApp.exe.config.
You are writing an app that adds events to an event log. Based on the EventLogEntryType enumeration, the following are valid entry types:
- Error
- Information
- Warning
- FailureAudit
- SuccessAudit
Debugger.Log – Debugger Log posts information to the attached Debugger in one is present. If no Debugger is present, the results is effectively nothing. ex. You need to write info to the debugging console, but you do not want to waste processing cycles when users run release versionso f the application. You should call the Debugger.Log method
To query local resources, you need instances of ObjectQuery, ManagementObjectSearcher & ManagementObjectCollection. You need to perform a management query for resources located on the local computer. You’ll need to create instances of the following classes:
- ManagementObjectSearcher
- ObjectQuery
- ManagementObjectCollection
PerformanceCounter.RawValue – offers the best performance in single-threaded app. Ex. You are writing a single threaded app that performs custom performance logging to enable users to use the Performance console to track the current number of users who have connected to your app. You should call the PerformanceCounter.RawValue
- PerformanceCounter.Decrement words well in Multi-Threaded environments. However PerformanceCounter.RawValue offers the best performance in single-treaded apps
Rollback method – to remove changes made during installation when install is cancelled.
- The Install method performs the actual installation
- The Commit method finalizes the installation changes
- The OnCommitting method runs immediately before the Commit method
- There is no OnRollback method
PerformanceCounter.Decrement – works well in multithreaded environments, Because users are disconnecting you would want to decrease the user counter. Ex. you’re writing a multithreaed app that performs custom logging to enable users to use the Performance console to track the current number of users who have connected to your app. You should call the PerformanceCounter.Decrement method when a user disconnects.
- You would call Performancecounter.Increment when a user connects, not disconnects.
- You would call PerformanceCounter.IncrementBy when a user connects, not disconnects.
- PerformanceCounter.RawValue would offer better performance than PerformanceCounter.Decrement. However PerformanceCounter.RawValue may yield an inaccurate count in multithreaded apps.
Application event log – You should always write events to the Application event log or a custom event log. ex. You are writing an application that implements a custom authentication mechanism. You should write entries related to unsuccessful authentication attempts to the application event log.
- The Security log is reserved for the operating system to store auditing events.
- The System event log is reserved for operating system events.
- The Active Directory event log is reserved for events relating to an Active Directory domain controller.
Commit – During a successful installation, Installer.Commit is the last method called, Commit finalizes all changes made during the installation.
Debug.Fail – causes the debugger to break at the line of code & output a failure message. ex. you want to verify an important value & stop execution if the value is not set properly. However, you only want to stop execution during debugging. You don’t want users with released versions of your app to experience problems. You should use the Debug.Fail method
- Debug.Assert evaluates a condition & displays a message, but it does not interrupt processing.
- Debug.Flush flushes the debug output buffer
- Debug.Indent controls the output formatting.

70-536 MCTS .NET 2.0 Configuration #32

noreply@blogger.com (Catto) — Thu, 27 Aug 2009 23:49:00 +0000

Hey Now Everybody,

This content below is from .NET 2.0 Configuration GAC GAC!.

Thx,

Catto

.NET Framework 2.0 Configuration

Chapter 9 Lesson 2

Click on the node you should use to view & fix dependencies
- To view, manage, & fix dependencies. First click the application node. If necessary, add the application. Then select the application & click View The Assembly Dependencies or Fix This App
Click on the node you should use to make an assembly globally available
- The assembly cache contains the set of assemblies available to all applications targeting the .NET Framework. Mutiple versions of the same assembly can be placed in the assembly cache. This allows two applications to correctly execute even if they require different versions of the same shared assembly.
Click on the node you should use to configure binding policy.
- Binding policy allows you to specify a new version of the assembly when an application requests a different version. To configure binding policy the assembly must first be in the global assembly cache (GAC). Then you can configure it from the Configured Assemblies node
Click on the node you should use to view permission sets
- You should use the Runtime Security Policy node. The .NET Framework 2.0 Config tool gives you the ability to evaluate code groups & permissions sets that apply to an assembly. This is especially critical in Active Directory environments, where policy can be applied at the enterprise, machine, & user levels.

70-536 MCTS .NET #31 Implementation Section 4

noreply@blogger.com (Catto) — Thu, 27 Aug 2009 23:46:00 +0000

Hey Now Everybody,

Section 4 Study Notes from Implementing serialization and input/output functionality in a .NET Framework app

This content below is from some practice questions from the book exam.Please feel free to comment.

Thx,

Catto

Implementing serialization and input/output functionality in a .NET Framework app

Per-user storage – is appropriate for isolated storage
- Isolated storage is perfect for storing data that should be kept separate for different users
The following ways isolated storage can be separated by:
- User
- Assembly
- Application Domain
  - Isolated Storage is always separated by user & assembly. It can also be separated by application domain.
The following classes you can use when serializing data to be consumed by applications running on a UNIX-based OS:
- SoapFormatter
- XmlSerializer
  - Both SoapFiormatter & XMLSerializer serialize data using open standards that other platforms can consume.
  - BinaryFormatter provides very efficient serialization, but it is not open-standards based
  - Iserializable is an interface that you can use to implement custom serialization. You cannot use it directly to perform serialization
  - SerializationBinder allows users to control class loading & mandate what class to load. You cannot use it to perform serialization.
FileSystemWatcher.Created – occurs when a file or directory in the specified path is created.
- When you are writing an app that needs to process files when they are added to a folder. FileSystemWatcher.Created is the event you should be respond to.
- FileSystemWatcher.Changed only occurs when an existing file is modified.
- FileSystemWatcher.Deleted occurs when a file is removed.
- FileSystemWatcher.Renamed occurs when a file is renamed
Serialized event occurs immediately after serialization
- Serialized is the serialization event that you should respond to if you need to run code after serialization occurs when creating a class that implements the ISerializable interface.
- Serializing event occurs prior to serialization
- Deserializing event occurs prior to deserialization
- Deserializied event occurs immediately after serialization.
OptionalField – attribute prevents deserialization from throwing an exception if the member is not present while still serializing the member.
- You are adding a new member to class that is already in use. You want to provide backward compatibility with serialized data that was created before the member was added. Which attribute would you add to the new member so that it would be serialized in the future, but deserialization would not throw an exception if the member class was not present in the serialized data? OptionalField
- ISerializable & IDeserializationCallback are interfaces that you can implement when you need to control the serialization process
- NonSerialized attribute would prevent the runtime from throwing an exception if the member was not present, however, it Also prevents the member from being serialized.
BinaryFormatter – Only the BinaryFormatter class supports serialization events
- When creating a class that responds to serialization events BinaryFormatter class will trigger the serialization events.
- The SoapFormatter class does not support serialization events
- XMLSerializer does not support serialization events
- IFormatter is an interface & cannot be directly used to perform serialization.
During Deserialization, track which objects have been deserialized & which are pending. This is a task performed by the ObjectManager class as part of serialization.
- The ObjectManager class keeps track of objects as they are deserialized.
Classes that interact with the file system
- StreamReader
- FileStream
  - You can directly interact with the file system by using FileStream or StreamReader
  - MemoryStream & StringReader both interact w/ Memory not the file system. SslStream interacts with a remote host
When you need to create a text file using the static FileCreateText.method the following values are acceptable parameters:
- C:\text.txt
- \\server\text.txt
  - File.CreateText can accept local file paths or universal naming convention (UNC) paths
  - File.CreateText cannot accept URL’s
You have written an app that stores compressed data using the DeflateStream class. The following methods you can use to open the compressed file:
- Read the file from a .NET app using the DeflateStream class
  - DeflateStream does not use the commonly used zip format nor is it natively supported by Windows Explorer. Therefore, only other .NET applications can read the compressed data
  - WinZip cannot open the compressed with DeflateStream
  - Compressed Folders cannot open files compressed with DeflateStream
  - Notepad cannot open files compressed with DeflateStream
You are writing a class that implements the ISerializable interface. Which of the following are requirements for a method that responds to the Deserialized event?
- Accepts a StreamingContext object as a parameter
- Returns a void
  - Methods that respond to serialization events must accept a Streaming Context object as a parameter & return void.
  - A method cannot respond to a serialization event if it accepts zero parameters. It must accept a StreamingContext object
  - Methods that respond to serialization events cannot return a StreamingContext object. They must return void.
  - A method cannot respond to a serialization event if it accepts a SerializationInfo object. It must accept a SerializationInfo Object. It must accept a StreamingContext object
You would use the System.IO.Path to test the past users provide when writing an app that will run on a computer that acts as kiosk. Users should be able to save files to the local disk, but users should only be able to specify a relative path to their files, you don’t want users to be able to specify an absolute path. You can test a path to determine weather it is absolute or relative by calling the Path.IsPathRooted method
- System.IO.Directory contains static methods for processing directories, but it does not enable you to test whether a pst is absolute.
- System.IO.DirectoryInfo provides directory management capabilities, but it does not enable you to test whether a past is absolute.
- SystemIO.DriveInfo enables you to examine the properties of a drive, & does not enable you to test whether a path is absolute.
Serializing – you are creating a class that implements the ISerializable interface. Serializing is the serialization event should you respond to if you need to run code prior to serialization.
- Serializing event occurs prior to serialization
- Serialized event occurs immediaFtely after serialization
- Deserializing event occurs prior to deserialization
- Deserialized event occurs immediately after serialization.
You need to define a value that is not available in the serialized data is a valid reason to Implement the ISerializable interface & respond to the Deserialized event
- You should respond to the Deserialized event when you need to define a value that was not contained in the serialized data. Typically, summary values such as totals are not serialized & must be defined by responding to the Deserialized event.
- The Deserialized event occurs after deserialization & cannot be used to read custom formatting in serialized data.
- XML serialization does not support serialization events.
- To define a value prior to serialization, you should repond to the Serializing event, not the Deserialized event.
Deserialized –is the serialization event you should respond to if you need to initialize a variable after deserialization occurs when you are creating a class that implements the ISerializable interface.
- Deserialized event occurs immediately after serialization
- Serializing event occrs prioer to serialization
- Serialized event occurs immediately after serialization
- Deserializing event occurs prior to deserialization
Xsd.exe – is a tool you would use to create a class that, when serialiezed using XMlSerializer, would conform to a specific schema.
- If you have an XML Schema you can run the XML Schema Definition tool (Xsd.exe) to produce a set of classes that are strongly typed to the schema & annotated with attributes.
  - XmlSerializer.exe, Schema.exe & Xml.exe are not .NET Framework tools.
Deserializing – is the serialization event you should respond to if you need to initialize a variable before deserialization occurs when creating a class that implements the ISerializable interface.
- Deserializing event occurs prior to deserialization
- Serializing event occurs prior to serialization
- Serialized event occurs immediately after serialization
- Deserialized event occurs immediately after serialization
The following are requirements for implementing custom serialization using the ISerializable interface:
- Override the GetObjectData method
- Implement a constructor that accepts SerializationInfo & StreamingContext object as parameters.
  - To implement ISerializable, you must override the GetObjectData method & create a constructor that accepts SerializationInfo & StreamingContext objects as parameters.
  - You can respond to the Serializing & Deserializing events, but it is not a requirement
  - You can respond to the Serialized & Deserialized events, but it is not a requirement
  - You must override the OnDeserialization method when you implement the IDeserializationCallback interface. It is not a member of the ISerializable interface.
IFormatter – interface you should implement when you are writing an application that uses serialization & you need complete control over how the serialized data is formatted.
- You should implement the IFormatter interface, which is the same interface that BinaryFormatter & SoapFormatter implement.
  - IFormatterConverter includes methods for converting values between core types, such as converting a Decimal to a Double or a signed integer to an unsigned integer. You typically do not need to implement the IFormatterConverter interface when using serialization.
  - You should implement ISerializable when you need to control the serialization process, but not when you need to control the formatting of the actual serialized data
  - You should implement IDeserializationCallback when you need to calculate the value of a member after deserialization. You cannot control formatting with IDeserializationCallback.
XmlSerializer – is the most efficient way to write an object to an XML document. ex. You are responsible for an internal database application. Your organization would now like to selectively send information from the database to external customers using XML documents. Currently you have custom classes that stroe this information. XmlSerializer is the class you should use to write the XML docs.
- BinaryFormatter would write the object to disk, but it would not use XML
- TextWriter & StreamWriter could be used to create XML docs, but it would be very inefficient because you would have to create the XML formatting manually.
StreamingContext is the type of object you would use during custom serialization to determine how the serialized data will be transferred & used. The StreamingContext structure describes the source & destination of a given serialized stream & provides an additional caller defined context. However, the method performing the serialization must define the StreamingContext structure it does not happen automatically.
- The SerializationEntry structure holds the value type & name of a serialized object. It does not describe the context of serialization
- SerializationInfo class stores all the data needed to serialize or deserialized an object. It does contain a StreamingContext structure as a member, but you would need to directly access the StreamingContext object to determine how serialization data will be transferred.
- ObjectManager class keeps track of objects as they are deserialized & does not describe the serialization context.
Storeadm – is a command that you would use to view isolated storage stores.
- Storeadm tool is a command line tool for listing & deleting isolated storage stores. Use the command storeadm / list to view stores & storeadm / remove to delete stores.
NonSerialized attribute you would add to a member class to prevent if from being serialized.
- NonSerialized attribute prevents a member from being serialized.
- Iserializable & IDeserializationCallback are interfaces that you can implement when you need to control the serialization process.
- OptionalField does not affect the serialzation of a member. OptionalField affects only deserialization by preventing the runtime from throwing an exception if the member is not present in serialized data.
IDeserializationCallback is the interface you would use to most efficiently automatically initialize a nonserialized member when Deserializing data.
- The simplest way to initialize nonserialized members is to implement the IDeserialiationCallback interface & override the OnDeserialization method
- The IFormatter interface provides functionality for formatting serialized objects, but it is not the most efficient way to initialize nonserialized members
- The ISerializable interface allows an object to control its own serialization & deserialization, however, it is not the most efficient way to initialize nonserialized members.
- IFormatterConverter interface provides the connection between an instance of SerializationInfo & the formatter-provided class best suited to parse the data inside SerializationInfo. It cannot be used to initialize nonserialized members.
- 4GB is the maximum file size you can compress by using the DeflateStream class
Byte array – FileStream.Write only supports byte arrays. To write other types, create a Writer class based on the FileStream object such as StreamWriter, BinaryWriter or TextWriter. data
You can create a custom class when you need to implement a custom compression algorithm in a custom class by the following:
- Derive from GZipStream
- Derive from DeflateStream
  - You can derive from GZipStream or DeflateStream, GZipStream is base on the GZip algorithm, whi8le DeflateStream is base on the Deflate algorithm, Alternatively, you could create an entirely unique compression algorithm by implementing the Stream interface.
BinaryFormatter – class you should use when serializaiing data to be consumed only by .NET Apps
- BinaryFormatter provides the best efficiency when only .NET apps will consume the serialized data
- SoapFormatter provides standards-based serialization, but it is not as efficient as BinaryFormatter.
  - ISerializable is an interface you can use to implement custom serialization. You cannot use it directly to perform serialization.
  - XmlSerializer provides standards based serialization, but it si not as efficient as BinaryFormatter.

You are working with your IT department to deploy an application that you wrote. The IT department asks if your application needs access to any folders on the local hard disk. Your application only uses isolated storage. Your application will be deployed only to Microsoft new computers running Windows XP. Your IT department does not use roaming profiles. To which folder does your application require access?
- Answer
- <systemdrive>\Documents and Settings\<user>\ Local Settings\Application Data
- Explanation: Ch 2 Lesson 4
- On Windows XP computers that were not upgraded and do not use roaming profiles, isolated storage is physically located in the <systemdrive>\Documents and Settings\<user>\ Local Settings\Application Data folder.
- The <systemroot>\Profiles\<user>\Application Data folder is used by Windows 2000, Windows XP, and Windows Server 2003 when upgraded from Windows NT 4.0 in environments that use roaming profiles
- The <systemroot>\Application Data folder is used by Microsoft Windows 98 and Windows ME without user profiles.
- The <systemroot>\Documents and Settings\<user>\Application Data folder is used by Windows XP and Windows Server 2003, when upgraded from Windows 2000 and Windows 98, or when not upgraded in environments that use roaming profiles.
You are working with your IT department to deploy an application that you wrote. The IT department asks if your application needs access to any folders on the local hard disk. Your application only uses isolated storage. Your application will be deployed only to Microsoft Windows XP computers that had been upgraded from Windows 2000. Your IT department does use roaming profiles. To which folder does your application require access?
- <systemroot>\Documents and Settings\<user>\Application Data
- Explanation: Ch 2 Lesson 4
- The <systemroot>\Documents and Settings\<user>\Application Data folder is used by Windows XP when upgraded from Windows 2000 in environments that use roaming profiles.
- On Windows XP computers that were not upgraded and do not use roaming profiles, isolated storage is physically located in the <systemdrive>\Documents and Settings\<user>\ Local
- Settings\Application Data folder.
- The <systemroot>\Profiles\<user>\Application Data folder is used by Windows 2000, Windows XP, and Windows Server 2003 when upgraded from Windows NT 4.0 in environments that use roaming profiles.
- The <systemroot>\Application Data folder is used by Microsoft Windows 98 and Windows ME without user profiles.
Which of the following code samples is the most efficient way to rename a file from "File1.txt" to "File2.txt"?

' VB

File.Move("File1.txt", "File2.txt")

Explanation: Ch2 Lesson 1
Use the static System.IO.File.Move method to rename files.
There is no File.Rename method. You should use File.Move instead.
Although copying and then deleting a file does effectively rename the file, it is not the most efficient way to rename a file.
Use File.Replace to copy a file while overwriting the destination file. File.Replace does not rename files.

Which of the following code samples correctly creates a new file named "Hello.dat" and writes the string "Hello, world!" to it?

' VB

Dim fs As New FileStream("Hello.dat", FileMode.CreateNew)

Dim bw As New BinaryWriter(fs)

bw.Write("Hello, World!")

bw.Close()

fs.Close()

Explanation: Ch2 Lesson 2

To write to a file with BinaryWriter, first create a FileStream object and use that to create the BinaryWriter object. Then call the BinaryWriter.Write method. Finally, close both the BinaryWriter object and the FileStream object.

You can write directly to a FileStream object; however, the FileStream.Write method does not accept a string parameter.

You cannot use a BinaryWriter object without creating a FileStream object first.

Which of the following code samples writes a string to a text file? (Choose all that apply.)

' VB

Dim s As String = "Hello, World!"

File.WriteAllText("Text.txt", s)

' VB

Dim s As String = "Hello, World!"

Dim sw As StreamWriter = New StreamWriter("Text.txt")

Try

sw.WriteLine(s)

Finally

Sw.Close()

End Try

Explanation: Ch 2 Lesson 1

To write a string to a file, you can call the static File.WriteAllText method or you can create a StreamWriter object.

The String class does not have a WriteFile method.

The File class contains only static methods; you cannot create an instance of the File class.

Which of the following is the most efficient way to create a name for a new temp file?
- ' VB
- Path.GetTempFileName()
- Explanation: Ch2 lesson 1
- Path.GetTempFileName() is the most efficient way to identify a name for a new temp file.
- Combining both Path.GetTempPath() and Path.GetTempFileName() is unnecessary because Path.GetTempFileName() already includes the path.
Given the following class, which of the following files represents how an instance of that class would be serialized using the XmlSerializer class?

' VB

Public Class ShoppingCartItem

Public productId As Int32

Public price As Decimal

Public quantity As Int32

Public total As Decimal

Public Sub New()

MyBase.New

End Sub

End Class

Answer

<?xml version="1.0" ?>

</CartItem>

Explanation: Ch5 Lesson 2

· The specified attributes change the root XML element to CartItem from the default ShoppingCartItem, and they cause the total to be ignored during serialization.

· By default, XmlSerializer serializes all members as elements, not attributes.

· By default, XmlSerializer serializes all members as elements, not attributes. Additionally, the total member would be left out of serialization.

· The specified attributes change the root XML element to CartItem from the default ShoppingCartItem.

Given the following class, which of the following files represents how an instance of that class would be serialized using the XmlSerializer class?

' VB

Public Class ShoppingCartItem

Public productId As Int32

Public price As Decimal

Public quantity As Int32

Public total As Decimal

Public Sub New()

MyBase.New

End Sub

End Class

· Answer:

<?xml version="1.0" ?>

</ShoppingCartItem>

· Explaination: Ch 5 Lesson 2

· By default, XmlSerializer serializes all members as XML elements.

· XmlSerializer serializes members as attributes only if each member has the XmlAttribute attribute.

· XmlSerializer would ignore the total member only if it had the XmlIgnore attribute.

· XmlSerializer creates an element for the class and makes each member a subelement within the class element.

You are developing version 2.0 of your application. One of the changes you are making is to change the file extension of a configuration settings file from .txt to .dat. The contents of the file do not need to change--just the file extension itself. In the following code samples, the current path and filename are stored in the String named "sn". Which of the following is the most reliable way to change the file extension?

' VB

File.Move(sn, Path.ChangeExtension(sn, "dat"))

Explanation: Ch2 Lesson 1

Combining the static File.Move method with the static Path.ChangeExtension method is the most efficient and reliable way to change the extension of a file.

Path.ChangeExtension does not directly make changes to the file system.

Providing a wildcard to the File.Move method results in an exception because the destination path includes an illegal character.

Using String.Replace to change the extension would work in most circumstances. However, if the filename included another occurrence of "txt" (for example, if the file were named "mytxt.txt"), both occurrences of "txt" would be changed.

You are creating a class that implements the ISerializable interface to perform custom serialization. Which of the following code samples correctly overrides the GetObjectData method and serializes the firstName, lastName, and age values?

' VB

Public Overridable Sub GetObjectData(ByVal info As SerializationInfo, ByVal context As StreamingContext) Implements System.Runtime.Serialization.ISerializable.GetObjectData

info.AddValue("First Name", firstName)

info.AddValue("Last Name", lastName)

info.AddValue("Age", age)

End Sub

Explanation: Ch 5 lesson 3

Methods that override GetObjectData must accept a SerializationInfo object and a SerializationContext structure as parameters. To add values to be serialized, call the SerializationInfo.AddValue method.

You cannot add data to be serialized to a StreamingContext object.

You cannot add data to be serialized to a SerializationInfo member. Additionally, the GetObjectData method must accept a SerializationInfo object and a SerializationContext structure as parameters.

The GetObjectData method must accept a SerializationInfo object and a SerializationContext structure as parameters.

You need to create a directory if it does not yet exist. Of the following code samples, which most efficiently creates a directory without throwing an exception if it already exists? If more than one code sample would work correctly, choose the sample that performs the desired task with the fewest lines of code.
- ' VB
- Directory.CreateDirectory("C:\dir\")
- Explanation: Ch 2 Lesson 1
- All of these code samples creates a directory without causing the runtime to throw an exception if the directory already exists. The most efficient technique is to call the static Directory.CreateDirectory
- Calling DirectoryInfo.Create does create a directory without causing the runtime to throw an exception if the directory already exists. However, the most efficient technique is to call the static Directory.CreateDirectory method.
- It is unnecessary to test whether a directory already exists before creating it.
Which of the following code samples does not result in an exception being thrown if the directory "C:\Dir\" does not exist? (Choose all that apply.)

' VB

Dim d As String = "C:\dir\"

Dim di As DirectoryInfo = New DirectoryInfo(d)

If di.Exists Then

Dim sw As StreamWriter = New StreamWriter(d + "Text.txt")

sw.WriteLine("Hello, World!")

End If

' VB

Dim d As String = "C:\dir\"

If Directory.Exists(d) Then

Dim sw As StreamWriter = New StreamWriter(d + "Text.txt")

sw.WriteLine("Hello, World!")

End If

Explanation: Ch 2 Lesson 1

To check whether a directory exists, you can call the static Directory.Exists method, or you can create a DirectoryInfo object and call DirectoryInfo.Exists.

The StreamWriter constructor cannot automatically create a directory if the specified directory does not exist. Therefore, the runtime throws an exception.

This code sample tests attempts to create a file only if the directory does not exist. Therefore, it will always throw an exception.

Which of the following code samples correctly deserializes the current date and time from an XML file?
- ' VB
- Dim fs As FileStream = New FileStream("SerializedDate.XML", FileMode.Open)
- Dim xs As XmlSerializer = New XmlSerializer(GetType(DateTime))
- Dim t As DateTime = CType(xs.Deserialize(fs),DateTime)
- Explanation: Ch 5 Lesson 2
- To deserialize an object, first create a Stream, TextReader, or XmlReader object to read the serialized input. Then create an XmlSerializer object (in the System.Xml.Serialization namespace) by passing it the type of object you plan to deserialize. Finally, call the XmlSerializer.Deserialize method to deserialize the object, and cast it to the correct type.
- No overload for the XmlSerializer constructor takes zero parameters.
- There is no static XmlSerializer.Read method.
- The XmlSerializer constructor requires a Type object and cannot accept a FileStream object.
How would you rewrite the following piece of code to store the information in isolated storage, isolated by user, domain, and assembly? Assume all code samples use the System.IO and System.IO.IsolatedStorage namespaces.
- ' VB
- Dim sw As StreamWriter = File.CreateText("mytemp.txt")
- sw.WriteLine("Hello, world!")
- sw.Close()
- Explanation: Ch 2 Lesson 4
- The easiest way to rewrite code that uses StreamWriter objects to use isolated storage is to use the overloaded StreamWriter constructor that accepts an IsolatedStorageFileSystem object.
- IsolatedStorageFileSystem does not have a WriteLine method.
- You cannot pass an IsolatedStorage object to the StreamWriter constructor.
- The File class does not have a static CreateIsolatedStorageText method.
You need to verify that the C:\ drive is a fixed drive and throw an exception if it is not. Which of the following code samples accomplishes this in the most efficient manner?
- ' VB
- Dim di As DriveInfo = New DriveInfo("C")
- If Not (di.DriveType = DriveType.Fixed) Then
- Throw New Exception("The C:\ drive must be fixed")
- End If
- Explanation: Ch 2 Lesson 1
- To determine if a drive is fixed, create an instance of the DriveInfo class and then check DriveInfo.DriveType.
- DriveInfo does not have a static GetDriveType method.
- The DriveInfo.GetDrives static method does not accept a drive letter as a parameter.
- The DriveInfo.GetDrives static method returns a standard, integer-indexed array of DriveInfo objects. The array cannot be accessed with the drive letter.
You are writing a security tool that aggregates firewall logs from client computers in your organization. IT will distribute your application to the approximately 2,000 client computers. Then the client portion of the application will run nightly to compress the %windir%\pfirewall.log file and copy it to a shared folder. After the file has been stored on the server, a separate server application will decompress and process the log files. Which of the following code samples correctly compresses and stores the logfile?
- ' VB
- Dim readpath As String = Path.Combine(System.Environment.GetEnvironmentVariable("windir"), "pfirewall.log")
- Dim writepath As String = "\\server\folder"
- Dim reader As FileStream = New FileStream(readpath, FileMode.Open)
- Dim writer As FileStream = New FileStream(writepath, FileMode.Create)
- Dim compress As DeflateStream = New DeflateStream(writer, CompressionMode.Compress)
- Dim b(reader.Length) As Byte
- reader.Read(b, 0, CType(reader.Length, Integer))
- reader.Close
- compress.Write(b, 0, CType(b.Length, Integer))
- compress.Close
- Explanation: Ch2 lesson 3
- To accomplish this task, you must create streams for both reading and writing the file. Then, based on the stream for writing the file, you can create a DeflateStream instance. Because DeflateStream requires a byte array, you must first read the contents of the file to be compressed into the byte array.
- The FileStream class does not have a ReadToEnd method. Additionally, the DeflateStream.Write() method can only accept a byte array. Finally, you cannot provide a file path to the DeflateStream constructor. You must first construct a stream object.
Which of the following code samples correctly serializes the current date and time to an XML file?
- ' VB
- Dim fs As FileStream = New FileStream("SerializedDate.XML", FileMode.Create)
- Dim xs As XmlSerializer = New XmlSerializer(GetType(DateTime)
- xs.Serialize(fs, System.DateTime.Now)
- Explanation: Ch 5 Lesson 2
- To perform XML serialization, first create a FileStream, TextWriter, or XmlWriter object to hold the serialized output. Then create an XmlSerializer object (in the System.Xml.Serialization namespace) by passing it the type of object you plan to serialize. Finally, call the XmlSerializer.Serialize method to serialize the object and output the results to the stream.
- No overload for the XmlSerializer constructor takes zero parameters.
- You can only pass an array of bytes to the FileStream.Write method.
- You cannot declare a filename in the XmlSerializer constructor--you must always pass a Type object.
You are writing an assembly that analyzes all files ending in a .txt or .dat extension in a specific folder. Which of the following code samples stores an array of all files with a .txt or a .dat extension contained in the C:\Windows folder in the allFiles array?
- ' VB
- Dim directoryInfo As DirectoryInfo = New DirectoryInfo("c:\windows")
- Dim txtFiles As FileInfo() = directoryInfo.GetFiles("*.txt")
- Dim datFiles As FileInfo() = directoryInfo.GetFiles("*.dat")
- Dim allFiles(txtFiles.Length + datFiles.Length - 1) As FileInfo
- Array.Copy(datFiles, 0, allFiles, 0, datFiles.Length)
- Array.Copy(txtFiles, 0, allFiles, datFiles.Length, txtFiles.Length)
- Explanation: Ch 2 Lesson 1
- DirectoryInfo.GetFiles can perform only one search at a time. Therefore, you would need to perform multiple searches and add the arrays using Array.Copy.
- You cannot add arrays using the + operator.
Which of the following code samples does not result in an exception being thrown if "text.txt" does not exist? (Choose all that apply.)
- ' VB
- Dim fn As String = "Text.txt"
- If File.Exists(fn) Then
- Dim sr As StreamReader = New StreamReader(fn)
- Console.WriteLine(sr.ReadToEnd)
- End If
- ' VB
- Dim fn As String = "Text.txt"
- Dim fi As FileInfo = New FileInfo(fn)
- If fi.Exists Then
- Dim sr As StreamReader = New StreamReader(fn)
- Console.WriteLine(sr.ReadToEnd)
- End If
- Explanation: Ch 2 Lesson 1
  - To check whether a file exists, you can call the static File.Exists method, or you can create a FileInfo object and call FileInfo.Exists.
  - The StreamReader constructor cannot take an instance of the class FileInfo.
  - FileInfo.Exists is not a static method. You must first create an instance of FileInfo to call this method.
Given the following class, which of the following files represents how an instance of that class would be serialized using the XmlSerializer class?
- ' VB
- <XmlRoot("CartItem")> Public Class ShoppingCartItem
- Public productId As Int32
- Public price As Decimal
- Public quantity As Int32
- <XmlIgnore()> Public total As Decimal
- Public Sub New()
- MyBase.New
- End Sub
- End Class
- Answer
- <?xml version="1.0" ?>
- <CartItem>
- <productId>100</productId>
- <price>10.25</price>
- <quantity>2</quantity>
- </CartItem>
- Explanation: Ch5 lesson 2
  - The specified attributes change the root XML element to CartItem from the default ShoppingCartItem, and they cause the total to be ignored during serialization.
  - By default, XmlSerializer serializes all members as elements, not attributes.
  - By default, XmlSerializer serializes all members as elements, not attributes. Additionally, the total member would be left out of serialization.
Given the following class, which of the following files represents how an instance of that class would be serialized using the XmlSerializer class?

' VB

Public Class ShoppingCartItem

<XmlAttribute()> Public productId As Int32

Public price As Decimal

Public quantity As Int32

Public total As Decimal

Public Sub New()

MyBase.New

End Sub

End Class

Answer

<?xml version="1.0" ?>

</ShoppingCartItem>

Explanation: Ch 5 Lesson 2

By default, XmlSerializer serializes all members as XML elements. The productId member has the XmlAttribute attribute, which causes it to be serialized as an attribute.

XmlSerializer serializes members as attributes only if each member has the XmlAttribute attribute.

XmlSerializer would ignore the productId member only if it had the XmlIgnore attribute.

The productId member has the XmlAttribute attribute, which causes it to be serialized as an attribute.

You are creating a custom class that implements the ISerializable interface. The following code shows the deserialization constructor in its current state:

' VB

' The following constructor is for deserialization

Protected Sub New(ByVal info As SerializationInfo, ByVal context As StreamingContext)

MyBase.New()

' TODO: Copy deserialized data

End Sub

How will you retrieve the deserialized data?

Answer Copy the data from the info.GetValue method.

Explanation: Chapter 5 Lesson 3

Deserialized data is stored in the SerializationInfo object, and it can be retrieved using the GetValue method or one of the other Get methods.

The StreamingContext object describes the source that provided the serialized data and does not contain the data itself.

There is no Data collection in either the SerializationInfo or StreamingContext classes.

You need to write text to a file. Which of the following demonstrates the most efficient way to use the TextWriter class?

' VB

Dim fs As FileStream = New FileStream("Hello.dat", FileMode.Create)

Dim tw As TextWriter = New StreamWriter(fs)

tw.Write("Hello, world!")

tw.Close

fs.Close

Explanation: Ch 2 Lesson 2

The TextWriter class does not have a constructor. Instead, you should create it using the StreamWriter constructor. To create a StreamWriter object, you must use an existing Stream object, such as an instance of FileStream.

70-536 NET Foundations questions #30

noreply@blogger.com (Catto) — Thu, 27 Aug 2009 02:53:00 +0000

Hey Now,

Thx,

Catto

#151 - #166

Question: 151

You are creating an application that lists processes on remote computers. The application requires a method that performs the following tasks: Accept the remote computer name as a string parameter named strComputer. Return an ArrayList object that contains the names of all processes that are running on that computer. You need to write a code segment that retrieves the name of each process that is running on the remote computer and adds the name to the ArrayList object. Which code segment should you use?

A. Dim al As New ArrayList()Dim procs As Process() = _
Process.GetProcessesByName(strComputer)Dim proc As ProcessFor Each proc In procs
al.Add(proc)Next

B. Dim al As New ArrayList()Dim procs As Process() =

Process.GetProcesses(strComputer)
Dim proc As ProcessFor Each proc In procs
al.Add(proc)Next

C. Dim al As New ArrayList()Dim procs As Process() = _
Process.GetProcessesByName(strComputer)Dim proc As ProcessFor Each proc In procs
al.Add(proc.ProcessName)Next

D. Dim al As New ArrayList()Dim procs As Process() =
Process.GetProcesses(strComputer)
Dim proc As ProcessFor Each proc In procs
al.Add(proc.ProcessName)Next

Answer: D
K8 – Q: Retrieves each process A: GetPRocesses & add proc.ProcessName

Question: 152

You are writing a method that returns an ArrayList named al. You need to ensure that changes to the ArrayList are performed in a thread-safe manner. Which code segment should you use?

A. Dim al As ArrayLis t = New ArrayList()
SyncLock al.SyncRoot
Return alEnd SyncLock

B. Dim al As ArrayList = New ArrayList()
SyncLock al.SyncRoot.GetType()
Return alEnd SyncLock

C. Dim al As ArrayList = New
ArrayList()Monitor.Enter(al)Monitor.Exit(al)Return al

D. Dim al As ArrayList = New ArrayList()
Dim sync_al as ArrayList = ArrayList.Synchronized(al)
Return sync_al

Answer: D

K8 – Q: return ArrayList AL in thread safe mannor A: Synchronized(AL)

Question: 153

You are developing an application to assist the user in conducting electronic surveys. The survey consists of 25 true-or-false questions. You need to perform the following tasks: Initialize each answer to true.Minimize the amount of memory used by each survey. Which storage option should you choose?

A. Dim answers As New BitVector32(1)

B. Dim answers As New BitVector32(-1)

C. Dim answers As New BitArray(1)

D. Dim answers As New BitArray(-1)

Answer: B

K8 – BitVector32(-1) Q: minimize memory used the right type needs to be selected.

Question: 154

You are creating a class named Age. You need to ensure that the Age class is written such that collections of Age objects can be sorted. Which code segment should you use?

A. public ref class Age {
public : Int32 Value;
public : virtual Object CompareTo(Object^ obj) {
if (obj->GetType() == Age::GetType()) {
Age^ _age = (Age^) obj;
return Value.CompareTo(obj);
}
throw gcnew ArgumentException(“object not an Age”);
}};

B. public ref class Age {
public : Int32 Value;
public : virtual Object CompareTo(Int32^ iValue) {
try {
return Value.CompareTo(iValue);
} catch (Exception^ ex) {
throw gcnew ArgumentException(“object not an Age”);
}
}};

C. public ref class Age : public IComparable {
public : Int32 Value;
public : virtual Int32 CompareTo(Object^ obj) {
if (obj->GetType() == Age::GetType()) {
Age^ _age = (Age^) obj;
return Value.CompareTo(_age->Value);
}
throw gcnew ArgumentException(“object not an Age”);
}};

D. public ref class Age : public IComparable {
public : Int32 Value;
public : virtual Int32 CompareTo(Object^ obj) {
try {
return Value.CompareTo(((Age^) obj)->Value);
} catch (Exception^ ex) {
return -1;
}

}};

Answer: C

K8 – Q: Sorting Objects A: IComparable to need to for try/catch

Question: 155

You are developing a server application that will transmit sensitive information on a network. You create an X509Certificate object named certificate and a TcpClient object named client. You need to create an SslStream to communicate by using the Transport Layer Security 1.0 protocol. Which code segment should you use?

A. Dim objSSL As New
SslStream(client.GetStream)objSSL.AuthenticateAsServer(certificate, False, _
SslProtocols.None, True)

B. Dim objSSL As New
SslStream(client.GetStream)objSSL.AuthenticateAsServer(certificate, False, _
SslProtocols.Ssl3, True)

C. Dim objSSL As New
SslStream(client.GetStream)objSSL.AuthenticateAsServer(certificate, False, _
SslProtocols.Ssl2, True)

D. Dim objSSL As New
SslStream(client.GetStream)objSSL.AuthenticateAsServer(certificate, False, _
SslProtocols.Tls, True)

Answer: D

K8 – Q: Transport Layer Security A: SslProtocols.TLS

Question: 156

You are using the Microsoft Visual Studio 2005 IDE to examine the output of a method that returns a string. You assign the output of the method to a string variable named fName. You need to write a code segment that prints the following on a single line The message: "Test Failed: " The value of fName if the value of fName does not equal "Company" You also need to ensure that the code segment simultaneously facilitates uninterrupted execution of the application. Which code segment should you use?

A. Debug.Assert(fName == “Company”, “Test Failed: ”, fName);

B. Debug.WriteLineIf(fName != “Company”, fName, “Test Failed”);

C. if (fName != "Company") {
Debug.Print(“Test Failed: ”);
Debug.Print(fName);
}

D. if (fName != "Company") {
Debug.WriteLine(“Test Failed: ”);
Debug.WriteLine(fName);
}

Answer: B

K8 - Q: Write a line for a condition A: WriteLineIf

Question: 157

You are creating a new security policy for an application domain. You write the following lines of code.
PolicyLevel ^policy = PolicyLevel::CreateAppDomainLevel();
PolicyStatement ^noTrustStatement =
gcnew PolicyStatement(
policy->GetNamedPermissionSet(“Nothing”));
PolicyStatement ^fullTrustStatement = gcnew PolicyStatement(
policy->GetNamedPermissionSet(“FullTrust”));
You need to arrange code groups for the policy so that loaded assemblies default to the Nothing permission set. If the assembly originates from a trusted zone, the security policy must grant the assembly the FullTrust permission set. Which code segment should you use?

A. CodeGroup ^group1 = gcnew FirstMatchCodeGroup(
gcnew ZoneMembershipCondition(SecurityZone::Trusted),
fullTrustStatement); CodeGroup ^group2 = gcnew UnionCodeGroup(
gcnew AllMembershipCondition(),
noTrustStatement); group1->AddChild(group2);

B. CodeGroup ^group1 = gcnew FirstMatchCodeGroup(
gcnew AllMembershipCondition(),
noTrustStatement);
CodeGroup ^group2 = gcnew UnionCodeGroup(
gcnew ZoneMembershipCondition(SecurityZone::Trusted),
fullTrustStatement);
group1->AddChild(group2);

C. CodeGroup ^group = gcnew UnionCodeGroup(
gcnew ZoneMembershipCondition(SecurityZone::Trusted),
fullTrustStatement);

D. CodeGroup ^group = gcnew FirstMatchCodeGroup(
gcnew AllMembershipCondition(),
noTrustStatement);

Answer: B

K8 - Q: 2 Code Group 1^st no trust 2^nd full trust

Question: 158

You are developing an application that will use custom authentication and role-based security. You need to write a code segment to make the runtime assign an unauthenticated principal object to each running thread. Which code segment should you use?

A. AppDomain domain = AppDomain.CurrentDomain;
domain.SetPrincipalPolicy(PrincipalPolicy.WindowsPrincipal);

B. AppDomain domain = AppDomain.CurrentDomain;
domain.SetThreadPrincipal(new WindowsPrincipal(null));

C. AppDomain domain = AppDomain.CurrentDomain;
domain.SetAppDomainPolicy(
PolicyLevel.CreateAppDomainLevel());

D. AppDomain domain = AppDomain.CurrentDomain;
domain.SetPrincipalPolicy(
PrincipalPolicy.UnauthenticatedPrincipal);

Answer: D

K8 – Q: Assign unauthenticated Principal Object

A: SetPrincipalPolicy

Question: 159

You are testing a method that examines a running process. This method returns an ArrayList containing the name and full path of all modules that are loaded by the process. You need to list the modules loaded by a process named C:\TestApps\Process1.exe.

Which code segment should you use?

A. Dim ar As New ArrayList()
Dim procs As Process()Dim modules As ProcessModuleCollectionprocs = Process.GetProcesses("Process1")If procs.Length > 0
Thenmodules = procs(0).Modules
For Each pm As ProcessModule In Modules
ar.Add(pm.ModuleName)
NextEnd If

B. Dim ar As New ArrayList()
Dim procs As Process()
Dim modules As ProcessModuleCollectionprocs = Process.GetProcesses("C:\TestApps\Process1.exe")If
procs.Length > 0 Thenmodules = procs(0).Modules
For Each pm As ProcessModule In Modules
ar.Add(pm.ModuleName)
Next End If

C. Dim ar As New ArrayList()
Dim procs As Process()
Dim modules As ProcessModuleCollectionprocs = Process.GetProcesses ByName("Process1")If
procs.Length > 0 Thenmodules = procs(0).Modules
For Each pm As ProcessModule In Modules
ar.Add(pm.FileName)
Next End If

D. Dim ar As New ArrayList()Dim procs As Process()Dim modules As
ProcessModuleCollectionprocs =
_Process.GetProcessesByName("C:\TestApps\Process1.exe")If procs.Length > 0

Thenmodules = procs(0).Modules

For Each pm As ProcessModule In Modules

ar.Add(pm.FileName)

Next End If

Answer: C

K8 - Q: process1.exe A: pm.filename

Question: 160

You are writing a method that accepts a string parameter named message. Your method must break the message parameter into individual lines of text and pass each line to a second method named Process. Which code segment should you use?

A. StringReader^ reader = gcnew
StringReader(message);
Process(reader->ReadToEnd());
reader->Close();

B. StringReader^ reader = gcnew StringReader(message);
while(reader->Peak() != -1) {
String^ line = reader->Read().ToString();
Process(line);
}reader->Close();

C. StringReader^ reader = gcnew
StringReader(message);
Process(reader->ToString());
reader->Close();

D. StringReader^ reader = gcnew StringReader(message);
while(reader->Peak() != -1) {
Process(reader->ReadLine());
}reader->Close();

Answer: D

K8 – Q: string broken into lines of text A: Loop w/ While & ReadLine()

Question: 161

You write the following custom exception class named CustomException.

public ref class CustomException : ApplicationException {public:
literal int COR_E_ARGUMENT = (int)0x80070057;

CustomException(String^ msg) : ApplicationException(msg)
{
HResult = COR_E_ARGUMENT;
}};

You need to write a code segment that will use the CustomException class to immediately return control to the COM caller. You also need to ensure that the caller has access to the error code. Which code segment should you use?

A. return Marshal::GetExceptionForHR(
CustomException::COR_E_ARGUMENT);

B. return CustomException::COR_E_ARGUMENT;

C. Marshal::ThrowExceptionForHR(
CustomException::COR_E_ARGUMENT);

D. throw gcnew CustomException(“Argument is out of bounds”);

Answer: D

K8 – Q: Immediatley return control to COM A: throw an exception

Question: 162

You need to create a dynamic assembly named MyAssembly. You also need to save the assembly to disk. Which code segment should you use?

A. AssemblyName^ myAssemblyName = gcnew AssemblyName();
myAssemblyName->Name = “MyAssembly”;
AssemblyBuilder myAssemblyBuilder =
AppDomain::CurrentDomain->DefineDynamicAssembly(
myAssemblyName, AssemblyBuilderAccess::Run);
myAssemblyBuilder->Save(“MyAssembly.dll”);

B. AssemblyName^ myAssemblyName = gcnew
AssemblyName();
myAssemblyName->Name = “MyAssembly”;
AssemblyBuilder myAssemblyBuilder =
AppDomain::CurrentDomain->DefineDynamicAssembly(
myAssemblyName, AssemblyBuilderAccess::Save);
myAssemblyBuilder->Save(“MyAssembly.dll”);

C. AssemblyName^ myAssemblyName = gcnew AssemblyName();
AssemblyBuilder myAssemblyBuilder =
AppDomain::CurrentDomain->DefineDynamicAssembly(
myAssemblyName,
AssemblyBuilderAccess::RunAndSave);
myAssemblyBuilder->Save(“MyAssembly.dll”);

D. AssemblyName^ myAssemblyName =
gcnew AssemblyName(“MyAssembly”);
AssemblyBuilder^ myAssemblyBuilder =
AppDomain::CurrentDomain->DefineDynamicAssembly(
myAssemblyName,

AssemblyBuilderAccess::Save);
myAssemblyBuilder->Save(“c:\\MyAssembly.dll”);

Answer: B

K8 – Q: Create & Save Assembly A: AssemblyBuilderAccess::Save

Question: 163

You write a class named Employee that includes the following code segment. public class
Employee {
string employeeId, employeeName, jobTitleName;
public string GetName() { return employeeName; }
public string GetTitle() { return jobTitleName; }
You need to expose this class to COM in a type
library. The COM interface must also facilitate forward-compatibility across new versions of the Employee class. You need to choose a method for generating the COM interface. What should you do?

A. Add the following attribute to the class
definition.[ClassInterface(ClassInterfaceType.None)]public class Employee {

B. Add the following attribute to the class

definition.[ClassInterface(ClassInterfaceType.AutoDual)]public class Employee {

C. Add the following attribute to the class definition.[ComVisible(true)]public class Employee {

D. Define an interface for the class and add the following attribute to the class

definition.[ClassInterface(ClassInterfaceType.None)]public class Employee : IEmployee

{

Answer: D

K8 – Q: ? A: ClasInterfaceType.None & IEmployee

Question: 164

You are developing an application to assist the user in conducting electronic surveys. The survey consists of 25 true-or-false questions. You need to perform the following tasks:

Initialize each answer to true.
Minimize the amount of memory used by each survey.
Which storage option should you choose?

A. BitVector32^ answers = gcnew BitVector32(1);

B. BitVector32^ answers = gcnew BitVector32(-1);

C. BitArray^ answers = gcnew BitArray(1);

D. BitArray^ answers = gcnew BitArray(-1);

Answer: B

K8 – Q: mem & Init all to True A: True so -1 & BitVector32 for mem.

Question: 165

You need to write a multicast delegate that accepts a DateTime argument and returns a Boolean value. Which code segment should you use?

A. public delegate int PowerDeviceOn(bool,

DateTime);

B. public delegate bool PowerDeviceOn(Object,

EventArgs);

C. public delegate void PowerDeviceOn(DateTime);

D. public delegate bool PowerDeviceOn(DateTime);

Answer: A

K8 – Q: Delagate Accepts DateTime Returns Bool
A: delegate int PowerDeviceOn(bool, DateTime);

Question: 166

You are developing a server application that will transmit sensitive information on a network. You create an X509Certificate object named certificate and a TcpClient object named client. You need to create an SslStream to communicate by using the Transport Layer Security 1.0 protocol. Which code segment should you use?

A. SslStream^ ssl = gcnew

SslStream(Client->GetStream());ssl->AuthenticateAsServer(certificate, false,

SslProtocols::None, true);

B. SslStream ^ssl = gcnew

SslStream(Client->GetStream());ssl->AuthenticateAsServer(certificate, false,

SslProtocols::SSl3, true);

C. SslStream ^ssl = gcnew

SslStream(Client->GetStream());ssl->AuthenticateAsServer(certificate, false,

SslProtocols::SSl2, true);

D. SslStream ^ssl = gcnew

SslStream(Client->GetStream());ssl->AuthenticateAsServer(certificate, false, SslProtocols::Tls,

true);

Answer: D

K8 – I’ve seen this question enough to know TLS Transport Layer Security

70-536 NET Foundations #29

noreply@blogger.com (Catto) — Thu, 27 Aug 2009 01:38:00 +0000

Hey Now,

Thx,

Catto

Q#140 Q#150

Question: 140

You write the following code to call a function from the Win32 Application Programming Interface (API) by using platform invoke. int rc = MessageBox(hWnd, text, caption, type); You need to define a methon prototype. Which code segment should you use?

A. [DllImport("user32")]public static extern int MessageBox(int hWnd, String text, String caption, uint type);

B. [DllImport("user32")]public static extern int MessageBoxA(int hWnd, String text, String caption, uint type);

C. [DllImport("user32")]public static extern int Win32API_User32_MessageBox(
int hWnd, String text, String caption, uint type);

D. [DllImport(@"C:\WINDOWS\system32\user32.dll")]public static extern int
MessageBox(int hWnd, String text,
String caption, uint type);

Answer: A

K8 User32 & MessageBox

Question: 141

You need to generate a report that lists language codes and region codes. Which code segment should you use?

A. foreach (CultureInfo culture in
CultureInfo.GetCultures(CultureTypes.SpecificCultures)) {
// Output the culture information...}

B. CultureInfo culture = new CultureInfo(“”); CultureTypes types = culture.Culture Types;
// Output the culture information...

C. foreach (CultureInfo culture in
CultureInfo.GetCultures(CultureTypes.NeutralCultures)) {
// Output the culture information...}

D. foreach (CultureInfo culture in
CultureInfo.GetCultures(CultureTypes.ReplacementCultures)) {
// Output the culture information...}

Answer: A

K8 – Q: list of languages A: loop threw them & use SpecificCultures

Question: 142

You are developing a fiscal report for a customer. Your customer has a main office in the United States and a satellite office in Mexico. You need to ensure that when users in the satellite office generate the report, the current date is displayed in Mexican Spanish format. Which code segment should you use?

A. DateTimeFormatInfo dtfi = new CultureInfo(“es-MX”, false).DateTimeFormat;
DateTime dt = new DateTime(DateTime.Today.Year, DateTime.Today.Month,
DateTime.Today.Day); string dateString = dt.ToString(dtfi.LongDatePattern);

B. Calendar cal = new CultureInfo(“es-MX”, false).Calendar; DateTime dt = new
DateTime(DateTime.Today.Year, DateTime.Today.Month, DateTime.Today.Day);
Strong DateString = dt.ToString();

C. string dateString = DateTimeFormatInfo.CurrentInfo
GetMonthName(DateTime.Today.Month);

D. string dateString = DateTime.Today.Month.ToString(“es-MX”);

Answer: A

K8 – Date info from other locations

Question: 143

You are creating an application that lists processes on remote computers. The application requires a method that performs the following tasks: Accept the remote computer name as a
string parameter named strComputer. Return an ArrayList object that contains the names of all processes that are running on that computer. You need to write a code segment that retrieves the name of each process that is running on the remote computer and adds the name to the ArrayList
object. Which code segment should you use?

A. ArrayList^ al = gcnew ArrayList();
array<Process^> procs =
Process::GetProcessesByName(StrComputer);
for each (Process^ proc in procs) {
al->Add(proc);}

B. ArrayList^ al = gcnew ArrayList();
array<Process^> procs =
Process::GetProcesses(StrComputer);
for each (Process^ proc in procs) {
al->Add(proc);}

C. ArrayList^ al = gcnew ArrayList();
array<Process^> procs =
Process::GetProcessesByName(StrComputer);
for each (Process^ proc in procs) {
al->Add(proc->ProcessName);}

D. ArrayList^ al = gcnew ArrayList();
array<Process^> procs =
Process::GetProcesses(StrComputer);
for each (Process^ proc in procs) {
al->Add(proc->ProcessName);}

Answer: D

K8 – Q: Get Process names A: Use GetProcesses & add ProcessName

Question: 144

You develop a service application named FileService. You deploy the service application to multiple servers on your network. You implement the following code segment. (Line numbers are included for reference only.)

01 Public Sub StartService(ByVal serverName As String)

02 Dim crtl As ServiceController = _

03 New ServiceController("FileService")

04 If crtl.Status = ServiceControllerStatus.Stopped Then

05 End If

06 End Sub

You need to develop a routine that will start FileService if it stops. The routine must start FileService on the server identified by the serverName input parameter. Which two lines of code should you add to the code segment? (Each correct answer presents part of the solution. Choose two.)

A. Insert the following line of code between lines 03 and 04:crtl.ServiceName = serverName

B. Insert the following line of code between lines 03 and 04:crtl.MachineName = serverName

C. Insert the following line of code between lines 03 and 04:crtl.Site.Name = serverName

D. Insert the following line of code between lines 04 and 05:crtl.Continue()

E. Insert the following line of code between lines 04 and 05:crtl.Start()

F. Insert the following line of code between lines 04 and 05:crtl.ExecuteCommand(0)

Answer: B, E

K8 – Q: Start app on server A: ctrl.MachineName & crtl.Start()

Question: 145

You are creating an application that retrieves values from a custom section of the application configuration file. The custom section uses XML as shown in the following block.

You need to write a code segment to define a class named Role. You need to ensure that the Role class is initialized with values that are retrieved from the custom section of the configuration file. Which code segment should you use?

A. public class Role : ConfigurationElement {
internal string_ElementName = “name”;
[ConfigurationProperty("role")]
public string Name {
get {
return ((string)base[“role”]);
} } }

B. public class Role : ConfigurationElement {
internal string_ElementName = “role”;
[ConfigurationProperty("name", RequiredValue = true)]
public string Name {
get {
return ((string)base[“name”]);
} } }

C. public class Role : ConfigurationElement {
internal string_ElementName = “role”;
private String_name;
[ConfigurationProperty("name")]
public string Name {
get {
return_name;
} } }

D. public class Role : ConfigurationElement {
internal string_ElementName = “name”;
private String_name;
[ConfigurationProperty("role", RequiredValue = true)]
public string Name {
get {
return_name;
} } }

Answer: B

K8 – Q: Retrieve values from config A: Role & ConfgProperty required value = True

Question: 146

You need to create a class definition that is interoperable along with COM. You need to ensure that COM applications can create instances of the class and can call the GetAddress method. Which code segment should you use?

A. public ref class Customer {
string addressString;
public: Customer(string address) : addressString(address) { }
String^ GetAddress() { return addressString; }}

B. public ref class Customer {
static string addressString;
public: Customer() { }
static String^ GetAddress() { return addressString; }}

C. public ref class Customer {
string; addressString
public: Customer() { }
String^ GetAddress() { return addressString; }}

D. public ref class Customer {
string addressString;
public: Customer() { }
private: String^ GetAddress() { return addressString; }}

Answer: C

K8 – String GetAddress() Customer()

Question: 147

You are developing an application to perform mathematical calculations. You develop a class named CalculationValues. You write a procedure named PerformCalculation that operates on an instance of the class. You need to ensure that the user interface of the application continues to respond while calculations are being performed. You need to write a code segment that calls the PerformCalculation procedure to achieve this goal. Which code segment should you use?

A. Private Sub PerformCalculation()...End Sub Private Sub DoWork()
Dim myValues As New CalculationValues()
Dim newThread As New Thread( _
New ThreadStart(AddressOf PerformCalculation))
newThread.Start(myValues)End Sub

B. Private Sub PerformCalculation()...End Sub Private Sub DoWork()

Dim myValues As New CalculationValues()
Dim delStart As New ThreadStart( _AddressOf PerformCalculation)
Dim newThread As New Thread(delStart)If newThread.IsAlive
ThennewThread.Start(myValues)End IfEnd Sub

C. Private Sub PerformCalculation ( _ByVal values As CalculationValues)...End Sub
Private Sub DoWork()
Dim myValues As New CalculationValues()
Application.DoEvents()
PerformCalculation(myValues)
Application.DoEvents()End Sub

D. Private Sub PerformCalculation ( _ByVal values As Object)...End Sub Private Sub
DoWork()
Dim myValues As New CalculationValues()
Dim newThread As New Thread( _
New ParameterizedThreadStart( _AddressOf PerformCalculation))
newThread.Start(myValues)End Sub

Answer: D

K8 – Q: Calculations & app continues to respond A: ParameterizedThreadStart

Question: 148

You are testing a method that examines a running process. This method returns an ArrayList containing the name and full path of all modules that are loaded by the process. You need to list the modules loaded by a process named C:\TestApps\Process1.exe.

Which code segment should you use?

A. ArrayList^ ar = gcnew ArrayList();
array<Process^> procs;
ProcessModuleCollection^ modules;
procs = Process::GetProcesses(@”Process1”);
if(procs->Length > 0) {
modules = procs[0]->Modules;
for each (ProcessModule^ mod in modules) {
ar->Add(mod->ModuleName);
}}

B. ArrayList^ ar = gcnew ArrayList();
array<Process^> procs;
ProcessModuleCollection modules;
procs = Process::GetProcesses(@”C:\TestApps\Process1.exe”);
if (procs->Length > 0) {
modules = procs[0]->Modules;
for each (ProcessModule^ mod in modules) {
ar->Add(mod->ModuleName);
}}

C. ArrayList^ ar = gcnew ArrayList();
array<Process^> procs;
ProcessModuleCollection modules;
procs = Process::GetProcesses(@”Process1”);
if (procs->Length > 0) {
modules = procs[0]->Modules;
for each (ProcessModule^ mod in modules) {
ar->Add(mod->FileName);
}}

D. ArrayList^ ar = gcnew ArrayList();
array<Process^> procs;
ProcessModuleCollection modules;procs = Process->GetProcessesByName(@”C:\TestApps\Process1.exe”);
if (procs->Length > 0) {
modules = procs[0]->Modules;
for each (ProcessModule^ mod in modules) {
ar->Add(mod->FileName);
}}

Answer: C

K8 – Q: Array name & path of modules loaded by an app Process1.exe A: @”Process1” & Filename

Question: 149

You write the following custom exception class named CustomException.

public class CustomException : ApplicationException {
public static int COR_E_ARGUMENT =
unchecked((int)0x80070057);
public CustomException(string msg) : base(msg) {
HResult = COR_E_ARGUMENT;
}} You need to write a code segment that will use the CustomException class to immediately return control to the COM caller. You also need to ensure that the caller has access to the error code. Which code segment should you use?

A. return Marshal.GetExceptionForHR(
CustomException.COR_E_ARGUMENT);

B. return CustomException.COR_E_ARGUMENT;

C. Marshal.ThrowExceptionForHR(
CustomException.COR_E_ARGUMENT);

D. throw new CustomException(“Argument is out of bounds”);

Answer: D

K8 – Q: CustomerException that immediately return control to COM A: throw exception.

Question: 150

You create a class library that contains the class hierarchy defined in the following code segment.

(Line numbers are included for reference only.)
01 public class Group {
02 public Employee[] Employees;
03 }
04 public class Employee {
05 public string Name;
06 }
07 public class Manager : Employee {
08 public int Level;
09 }

You create an instance of the Group class. You populate the fields of the instance. When you attempt to serialize the instance by using the Serialize method of the XmlSerializer class, you receive InvalidOperationException. You also receive the following error message: "There was an error generating the XML document." You need to modify the code segment so that you can successfully serialize instances of the Group class by using the XmlSerializer class. You also need to ensure that the XML output contains an element for all public fields in the class hierarchy. What should you do?

A. Insert the following code between lines 1 and 2 of the code segment:
[XmlArrayItem(Type = typeof(Employee))]
[XmlArrayItem(Type = typeof(Manager))]

B. Insert the following code between lines 1 and 2 of the code segment:
[XmlElement(Type = typeof(Employees))]

C. Insert the following code between lines 1 and 2 of the code segment:
[XmlArray(ElementName="Employees")]

D. Insert the following code between lines 3 and 4 of the code segment:
[XmlElement(Type = typeof(Employee))]
andInsert the following code between lines 6 and 7 of the code segment:
[XmlElement(Type = typeof(Manager))]

Answer: A

K8 – Q: Serialize instances of Group Class A: Both Employee & Manager

70-536 NET Foundations #28

noreply@blogger.com (Catto) — Wed, 26 Aug 2009 02:15:00 +0000

Hey Now,

Thx,

Catto

Q#121 – Q#39

Question: 121

You need to return the contents of an isolated storage file as a string. The file is machine-scoped and is named Settings.dat. Which code segment should you use?

A. Dim objStream As IsolatedStorageFileStreamobjStream = New IsolatedStorageFileStream( _ "Settings.dat", FileMode.Open)Dim result As String = New
StreamReader(objStream).ReadToEnd

B. Dim objFile As IsolatedStorageFileobjFile =
IsolatedStorageFile.GetMachineStoreForAssembly
Dim objStream As IsolatedStorageFileStreamobjStream = New IsolatedStorageFileStream( _
"Settings.dat", FileMode.Open, objFile)
Dim result As String = New StreamReader(objStream).ReadToEnd

C. Dim objStream As IsolatedStorageFileStreamobjStream = New
IsolatedStorageFileStream( _
"Settings.dat", FileMode.Open)Dim result As String objStream.toString

D. Dim objFile As IsolatedStorageFileobjFile =
IsolatedStorageFile.GetMachineStoreForAssembly
Dim objStream As IsolatedStorageFileStreamobjStream = New IsolatedStorageFileStream( _
"Settings.dat", FileMode.Open, objFile)
Dim result As String = objStream.ToString

Answer: B

K8 – IsolatedStorageFileobjFile along with ReadToEnd

Question: 122

You are developing a utility screen for a new client application. The utility screen displays a thermometer that conveys the current status of processes being carried out by the application. You need to draw a rectangle on the screen to serve as the background of the thermometer as shown in the exhibit. The rectangle must be filled with gradient shading. Which code segment should you choose?

Exhibit:

A. Rectangle rectangle = new Rectangle(10, 10, 450, 25); LinearGradientBrush rectangleBrush =
new LinearGradientBrush(rectangle, Color.AliceBlue,
Color.CornflowerBlue,
LinearGradientMode.ForwardDiagonal);
Pen rectanglePen = new Pen(rectangleBrush);
Graphics g = this.CreateGraphics(); g.DrawRectangle(rectanglePen, rectangle);

B. Rectangle rectangle = new Rectangle(10, 10, 450, 25); LinearGradientBrush rectangleBrush =
new LinearGradientBrush(rectangle, Color.AliceBlue,
Color.CornflowerBlue,
LinearGradientMode.ForwardDiagonal);
Pen rectanglePen = new Pen(rectangleBrush);
Graphics g = this.CreateGraphics(); g.FillRectangle(rectangleBrush, rectangle);

C. RectangleF rectangle = new RectangleF(10f, 10f, 450f, 25f); Point[] points = new Point[] {new Point(0, 0), new Point(110, 145)};
LinearGradientBrush rectangelBrush = new LinearGradientBrush(rectangle, Color.AliceBlue, Color.CornflowerBlue, LinearGradientMode.ForwardDiagonal);
Pen rectanglePen = new Pen(rectangleBrsh);
Graphics g = this.CreateGraphics(); g.DrawPolygon(rectanglePen, points);

D. RectangleF rectangle = new RectangleF(10f, 10f, 450f, 25f); SolidBrush rectangleBrush =
new SolidBrush(Color.AliceBlue); Pen rectanglePen = new Pen(rectangleBrush);
Graphics g = this.CreateGraphics(); g.DrawRectangle(rectangleBrush, rectangle);

Answer: B

K8 – Just Rectangle not RectangleF & when filling use the brush not pen.

Question: 123

You are developing an application to perform mathematical calculations. You develop a class named CalculationValues. You write a procedure named PerformCalculation that operates on an instance of the class. You need to ensure that the user interface of the application continues to respond while calculations are being performed. You need to write a code segment that calls the PerformCalculation procedure to achieve this goal. Which code segment should you use?

A. public ref class CalculationValues {}; public ref class Calculator {
public :
void PerformCalculation() {} }; public ref class ThreadTest{
private :
void DoWork (){
CalculationValues^ myValues = gcnew CalculationValues();
Calculator^ calc = gcnew Calculator();
Thread^ newThread = gcnew Thread(
gcnew ThreadStart(calc, &Calculator::PerformCalculation));
newThread->Start(myValues);
}};

B. public ref class Calculation Values {}; public ref class Calculator {
public :void PerformCalculation() {}}; public ref class ThreadTest{
private :

void DoWork (){
CalculationValues^ myValues = gcnew CalculationValues();
Calculator^ calc = gcnew Calculator();
ThreadStart^ delStart = gcnew
ThreadStart(calc, &Calculator::PerformCalculation);
Thread^ newThread = gcnew Thread(delStart);
if (newThread->IsAlive) {
newThread->Start(myValues);
}
}};

C. public ref class Calculation Values {}; public ref class Calculator {
public :
void PerformCalculation(CalculationValues^ values) {} };
public ref class ThreadTest{
private :
void DoWork (){
CalculationValues^ myValues = gcnew CalculationValues();
Calculator^ calc = gcnew Calculator();
Application::DoEvents();
calc->PerformCalculation(myValues);
Application::DoEvents();
}};

D. public ref class Calculation Values {}; public ref class Calculator {
public :
void PerformCalculation(Object^ values) {} }; public ref class ThreadTest{
private :
void DoWork (){
CalculationValues^ myValues = gcnew CalculationValues();
Calculator^ calc = gcnew Calculator();
Thread^ newThread = gcnew Thread(
gcnew ParameterizedThreadStart(calc,
&Calculator::PerformCalculation));
newThread->Start(myValues);
}};

Answer: D

K8 – Do calculations while still responding use ParameterizedTreadStart

Question: 124

You are developing a method to decrypt data that was encrypted with the Triple DES Algorithm. The method accepts the following parameters: The byte array to be decrypted, which is named cipherMessageThe key, which is named keyAn initialization vector, which is named iv You need to decrypt the message by using the TripleDES class and place the result in a string. Which code segment should you use?

A. Dim objDES As New TripleDESCryptoServiceProviderobjDES.BlockSize =
cipherMessage.Length
Dim objCrypto As ICryptoTransform = _
objDES.CreateDecryptor(key, iv)
Dim cipherStream As New
MemoryStream(cipherMessage)
Dim cryptoStream As New CryptoStream( _
cipherStream, objCrypto, CryptoStreamMode.Read)
Dim message As Stringmessage =
New StreamReader(cryptoStream).ReadToEnd

B. Dim objDES As New TripleDESCryptoServiceProviderobjDES.FeedbackSize =
cipherMessage.Length
Dim objCrypto As ICryptoTransform = _
objDES.CreateDecryptor(key, iv)
Dim cipherStream As New
MemoryStream(cipherMessage)
Dim cryptoStream As New CryptoStream( _
cipherStream, objCrypto, CryptoStreamMode.Read)
Dim message As Stringmessage =
New StreamReader(cryptoStream).ReadToEnd

C. Dim objDES As New TripleDESCryptoServiceProvider
Dim objCrypto As ICryptoTransform = _
objDES.CreateDecryptor()
Dim cipherStream As New
MemoryStream(cipherMessage)
Dim cryptoStream As New CryptoStream( _
cipherStream, objCrypto, CryptoStreamMode.Read)Dim message As Stringmessage =
New StreamReader(cryptoStream).ReadToEnd

D. Dim objDES As New TripleDESCryptoServiceProvider
Dim objCrypto As
ICryptoTransform = _
objDES.CreateDecryptor(key, iv)
Dim cipherStream As New
MemoryStream(cipherMessage)
Dim cryptoStream As New CryptoStream( _
cipherStream, objCrypto, CryptoStreamMode.Read)Dim message As Stringmessage =
New StreamReader(cryptoStream).ReadToEnd

Answer: D

K8 – with TripleDESCryptoServiceProvider no block or feedbacksize

Question: 125

You are developing a custom event handler to automatically print all open documents. The event handler helps specify the number of copies to be printed. You need to develop a custom event arguments class to pass as a parameter to the event handler. Which code segment should you use?

A. public ref class PrintingArgs {
public :
int Copies ;
PrintingArgs (int numberOfCopies) {
this->Copies = numberOfCopies;
}};

B. public ref class PrintingArgs : public EventArgs {
public :
int Copies ;
PrintingArgs(int numberOfCopies) {
this->Copies = numberOfCopies;
}};

C. public ref class PrintingArgs {
public :
EventArgs Args;
PrintingArgs(EventArgs ea) {
this->Args = ea;
}};

D. public ref class PrintingArgs : public EventArgs {
public :
int Copies;};

Answer: B

K8 – class PrintingArgs & event handler EventArgs print all copies & increment counter.

Question: 126

You are writing a method to compress an array of bytes. The array is passed to the method in a parameter named document. You need to compress the incoming array of bytes and return the result as an array of bytes. Which code segment should you use?

A. MemoryStream^ strm = gcnew MemoryStream(document);
DeflateStream^ deflate = gcnew DeflateStream(strm,
CompressionMode::Compress);
array<Byte>^ result = gcnew array<Byte>(document->Length);
deflate->Write(result, 0, result->Length);
return result;

B. MemoryStream^ strm = gcnew MemoryStream(document);
DeflateStream^ deflate = gcnew DeflateStream(strm,
CompressionMode::Compress);
deflate->Write(document, 0, document->Length);
deflate->Close();return strm->ToArray();

C. MemoryStream^ strm = gcnew MemoryStream();
DeflateStream^ deflate = gcnew
DeflateStream(strm,CompressionMode::Compress);
deflate->Write(document, 0, document->Length);
deflate->Close();
return strm->ToArray();

D. MemoryStream^ inStream = gcnew MemoryStream(document);DeflateStream^
deflate = gcnew DeflateStream(inStream,
CompressionMode::Compress);
MemoryStream^ outStream = gcnew MemoryStream()
;int b;
while ((b = deflate->ReadByte()) != -1) {
outStream->WriteByte((Byte)b);
}
return outStream->ToArray();

Answer: C

K8 – MemoryStream()

Question: 127

You are creating a class that performs complex financial calculations. The class contains a method named GetCurrentRate that retrieves the current interest rate and a variable named currRate that stores the current interest rate. You write serialized representations of the class. You need to write a code segment that updates the currRate variable with the current interest rate when an instance of the class is deserialized. Which code segment should you use?

A. <OnSerializing> _Friend Sub UpdateValue (ByVal context As StreamingContext)

currRate = GetCurrentRate()End Sub

B. <OnSerializing> _ Friend Sub UpdateValue(ByVal info As SerializationInfo)

info.AddValue("currentRate", GetCurrentRate())End Sub

C. <OnDeserializing> _ Friend Sub UpdateValue(ByVal info As SerializationInfo)

info.AddValue("currentRate", GetCurrentRate())End Sub

D. <OnDeserialized> _Friend Sub UpdateValue (ByVal context As StreamingContext)

currRate = GetCurrentRate()End Sub

Answer: D

K8 - OnDeserialized – when the instance of the class is deserialized.

You are writing an application that uses isolated storage to store user preferences. The application uses multiple assemblies. Multiple users will use this application on the same computer. You need to create a directory named Preferences in the isolated storage area that is scoped to the current Microsoft Windows identity and assembly. Which code segment should you use?

A. Dim objStore As IsolatedStorageFileobjStore =

IsolatedStorageFile.GetUserStoreForAssemblyobjStore.CreateDirectory("Preferences")

B. Dim objStore As IsolatedStorageFileobjStore =
IsolatedStorageFile.GetMachineStoreForAssemblyobjStore.CreateDirectory("Preferences")

C. Dim objStore As IsolatedStorageFileobjStore =
IsolatedStorageFile.GetUserStoreForDomainobjStore.CreateDirectory("Preferences")

D. Dim objStore As IsolatedStorageFileobjStore =
IsolatedStorageFile.GetUserStoreForApplicationobjStore.CreateDirectory("Preferences")

Answer: A

K8 – Q: multiple assemblies A: GetUserStoreForAssemblyobjStore

Question: 129

You are developing a method that searches a string for a substring. The method will be localized to Italy. Your method accepts the following parameters: The string to be searched, which is named searchList. The string for which to search, which is named searchValue You need to write the code. Which code segment should you use?

A return searchList.IndexOf(searchValue);

B. CompareInfo comparer = new CultureInfo(“it-IT”).CompareInfo;
return comparer.Compare(searchList, searchValue);

C. CultureInfo Comparer = new CultureInfo(“it-IT”);
if(searchList.IndexOf(searchValue)
> 0) {
return true;} else {
return false;}

D. CompareInfo comparer =
new CultureInfo(“it-IT”).CompareInfo;
if (comparer.IndexOf(searchList, searchValue) > 0) {
return true;} else {
return false;}

Answer: D

K8 – Use comparer.IndexOf

Question: 130

You are creating a class named Age. You need to ensure that the Age class is written such that collections of Age objects can be sorted. Which code segment should you use?

A. Public Class Age
Public Value As Integer
Public Function CompareTo(ByVal obj As Object) As Objec t
If TypeOf obj Is Age Then
Dim _age As Age = CType(obj, Age)
Return Value.CompareTo(obj)
End If
Throw New ArgumentException("object not an Age")
End FunctionEnd Class

B. Public Class Age
Public Value As Integer
Public Function CompareTo(ByVal iValue As Integer) As Object
Try
Return Value.CompareTo(iValue)
Catch
Throw New ArgumentException ("object not an Age")
End Try
End FunctionEnd Class

C. Public Class Age
Implements IComparable
Public Value As Integer
Public Function CompareTo(ByVal obj As Object) As Integer _
Implements IComparable.CompareTo
If TypeOf obj Is Age Then
Dim _age As Age = CType(obj, Age)
Return Value.CompareTo(_age.Value)
End If
Throw New ArgumentException("object not an Age")
End FunctionEnd Class

D. Public Class Age
Implements IComparable
Public Value As Integer
Public Function CompareTo(ByVal obj As Object) As Integer _
Implements IComparable.CompareTo
Try
Return Value.CompareTo((CType(obj, Age)).Value)
Catch
Return -1
End Try
End FunctionEnd Class

Answer: C

K8 – Able to sort A: Icomparable & not try needed.

Question: 131

You are developing a class library. Portions of your code need to access system environment variables. You need to force a runtime SecurityException only when callers that are higher in the call stack do not have the necessary permissions. Which call method should you use?

A. Demand()

B. Assert()

C. PermitOnly()

D. Deny()

Answer: A

K8 – Q: force rentime securityException when callers that don’t have permission. A: Demand()

Question: 132

You are testing a component that serializes the Meeting class instances so that they can be saved to the file system. The Meeting class has the following definition:

Public Class Meeting
Private title As String
Public roomNumber As Integer
Public invitees As String()
Public Sub New()End Sub
Public Sub New(ByVal t As String)
title = t
End Sub End Class
The component contains a procedure with the following code segment.

Dim myMeeting As New Meeting("Goals") myMeeting.roomNumber = 1100
Dim attendees As String() = New String(1) {"Company", "Mary"} myMeeting.invitees = attendees
Dim xs As New XmlSerializer(GetType(Meeting)) Dim writer As New
StreamWriter("C:\Meeting.xml") xs.Serialize(writer, myMeeting) writer.Close()
You need to identify the XML block that is written to the C:\Meeting.xml file as a result of running this procedure. Which XML block represents the content that will be written to the C:\Meeting.xml file?

A. <?xml version="1.0" encoding="utf-8"?>
<Meeting xmlns:xsd=http://www.w3.org/2001/XMLSchema
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<title>Goals</title>
<roomNumber>1100</roomNumber>
<invitee>Company</invitee>
<invitee>Mary</invitee>
</Meeting>

B. <?xml version="1.0" encoding="utf-8"?>
<Meeting xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<roomNumber>1100</roomNumber>
<invitees>
<string>Company</string>
<string>Mary</string>
</invitees>
</Meeting>

C. <?xml version="1.0" encoding="utf-8"?>
<Meeting xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

title="Goals">
<roomNumber>1100</roomNumber>
<invitees>
<string>Company</string>
<string>Mary</string>
</invitees>
</Meeting>

D. <?xml version="1.0" encoding="utf-8"?>
<Meeting xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<roomNumber>1100</roomNumber>
<invitees>
<string>Company</string>
</invitees>
<invitees>
<string>Mary</string>
</invitees>
</Meeting>

Answer: B

K8 – no title tag like in C

Question: 133

You are developing a method that searches a string for a substring. The method will be localized to Italy. Your method accepts the following parameters: The string to be searched, which is named SearchListThe string for which to search, which is named SearchValue You need to write the code. Which code segment should you use?

A. Return SearchList.IndexOf(SearchValue)

B. Dim objComparer As CompareInfo = _
New CultureInfo("it-IT").CompareInfoReturn objComparer.Compare(SearchList, SearchValue)

C. Dim objComparer As CompareInfo = _
New CultureInfo("it-IT").CompareInfoIf SearchList.IndexOf(SearchValue) > 0 Then
Return TrueElse
Return FalseEnd If

D. Dim objComparer As CompareInfo = _
New CultureInfo("it-IT").CompareInfoIf objComparer.IndexOf(SearchList,
SearchValue) > 0 Then
Return TrueElse
Return FalseEnd If

Answer: D

K8 - String from substring

Question: 134

You are developing a method to encrypt sensitive data with the Data Encryption Standard (DES) algorithm. Your method accepts the following parameters:

The byte array to be encrypted, which is named messageAn encryption key, which is named keyAn initialization vector, which is named iv You need to encrypt the data. You also need to write the encrypted data to a MemoryStream object. Which code segment should you use?

A. Dim objDES As New DESCryptoServiceProviderobjDES.BlockSize =
message.Length
Dim objCrypto As ICryptoTransform = obj
DES.CreateDecryptor(key, iv)
Dim cipherStream As New MemoryStream
Dim cryptoStream As New CryptoStream(cipherStream, objCrypto, CryptoStreamMode.Write)

B. Dim objDES As New DESCryptoServiceProvider

Dim objCrypto As ICryptoTransform = objDES.CreateDecryptor(key, iv)
Dim cipherStream As New MemoryStream
Dim cryptoStream As New CryptoStream(cipherStream, objCrypto, CryptoStreamMode.Write)
cryptoStream.Write(message, 0, message.Length)

C. Dim objDES As New DESCryptoServiceProvider
Dim objCrypto As ICryptoTransform = obj
DES.CreateDecryptor()
Dim cipherStream As New MemoryStream
Dim cryptoStream As New CryptoStream(cipherStream, objCrypto, CryptoStreamMode.Write)
cryptoStream.Write(message, 0, message.Length)

D. Dim objDES As New DESCryptoServiceProvider
Dim objCrypto As ICryptoTransform =

objDES.CreateEncryptor(key, iv)
Dim cipherStream As New MemoryStream
Dim cryptoStream As New CryptoStream(cipherStream, objCrypto, CryptoStreamMode.Write)
cryptoStream.Write(message, 0, message.Length)

Answer: D

K8 – CreateEncryptor since encrypting

Question: 135

You are creating an application that retrieves values from a custom section of the application configuration file. The custom section uses XML as shown in the following block.

You need to write a code segment to define a class named Role. You need to ensure that the Role class is initialized with values that are retrieved from the custom section of the configuration
file. Which code segment should you use?

A. Public Class RoleInherits ConfigurationElementFriend _ElementName As String =
"name"
<ConfigurationProperty("role")> _
Public ReadOnly Property Name() As String
Get
Return CType(Me("role"), String)
End Get
End PropertyEnd Class

B. Public Class Role

Inherits ConfigurationElement
Friend _ElementName As String = "role"
<ConfigurationProperty("name", IsRequired:=True)> _
Public ReadOnly Property Name() As String
Get
Return CType(Me("name"), String)
End Get
End PropertyEnd Class

C. Public Class Role
Inherits ConfigurationElement
Friend _ElementName As String = "role"
Private _name As String
<ConfigurationProperty("name")> _
Public ReadOnly Property Name() As String
Get
Return _name
End Get
End PropertyEnd Class
D. Public Class Role
Inherits ConfigurationElement
Friend _ElementName As String = "name"
Private _name As String
<ConfigurationProperty("role", IsRequired:=True)> _
Public ReadOnly Property Name() As String
Get
Return _name
End Get
End PropertyEnd Class

Answer: B

K8 - ", IsRequired:=True)> & return Name

Question: 136

You need to serialize an object of type List<int> in a binary format. The object is named data. Which code segment should you use?

A. BinaryFormatter formatter = new BinaryFormatter();
MemoryStream stream = new MemoryStream();
formatter.Serialize(stream, data);

B. BinaryFormatter formatter = new BinaryFormatter();
MemoryStream stream = new
MemoryStream();
for (int i = 0; i < data.Count, i++) {
formatter.Serialize(stream, data[i]);}

C. BinaryFormatter formatter = new BinaryFormatter();
byte[] buffer = new byte[data.Count];
MemoryStream stream = new MemoryStream(buffer, true);
formatter.Serialize(s tream, data);

D. BinaryFormatter formatter = new BinaryFormatter();
MemoryStream stream = new MemoryStream();
data.ForEach(delegate(int num)
{ formatter.Serialize(stream, data); }
);

Answer: A

K8 – BinaryFormatter formatter.Serialize(stream, data);

Question: 137

You are writing a method to compress an array of bytes. The bytes to be compressed are passed to the method in a parameter named document. You need to compress the contents of the incoming parameter. Which code segment should you use?

A. MemoryStream inStream = new MemoryStream(document);
GZipStream zipStream = new GZipStream(inStream,
CompressionMode.Compress);
byte[] result = new

Byte[document.Length];
zipStream.Write(result, 0, result.Length);
return result;

B. MemoryStream Stream = new MemoryStream(document);
GZipStream zipStream = new GZipStream(stream,
CompressionMode.Compress);
zipStream.Write(document, 0, document.Length);
zipStream.Close();
return stream.ToArray();

C. MemoryStream outStream = new MemoryStream();
GZipStream zipStream = new GZipStream(outStream,
CompressionMode.Compress);
zipStream.Write(document, 0, document.Length);
zipStream.Close();
return outStream.ToArray();

D. MemoryStream inStream = new MemoryStream(document);GZipStream zipStream =
new GZipStream(inStream,
CompressionMode.Compress);
MemoryStream outStream = new MemoryStream();int b;while
((b = zipStream.ReadByte()) != -1) {
outStream.WriteByte((byte)b);
} return outStream.ToArray();

Answer: C

K8 – Q: compress A: MemoryStream(); Gzip compress

Question: 138

You write the following code to implement the CompanyClass.MyMethod function.
Public Class NewClass
Public Function MyMethod(ByVal Arg As Integer) As Integer
Return Arg
End FunctionEnd Class

You need to call the CompanyClass.MyMethod function dynamically from an unrelated class in your assembly. Which code segment should you use?

A. Dim objNewClass As New NewClassDim objType As Type =
objNewClass.GetType
Dim objInfo As MethodInfo = _
objType.GetMethod("MyMethod")
Dim objParams() As Object = {1}
Dim i As Integer = _
DirectCast(objInfo.Invoke(Me, objParams), Integer)

B. Dim objNewClass As New NewClass
Dim objType As Type = objNewClass.GetType
Dim objInfo As MethodInfo =
objType.GetMethod("MyMethod")
Dim objParams() As Object = {1}
Dim i As Integer = _
DirectCast(objInfo.Invoke(objNewClass, objParams), Integer)

C. Dim objNewClass As New NewClass
Dim objType As Type =
objNewClass.GetTypeDim objInfo As MethodInfo = _
objType.GetMethod("NewClass.MyMethod")Dim objParams() As Object = {1}Dim i As
Integer = _
DirectCast(objInfo.Invoke(objNewClass, objParams), Integer)

D. Dim objType As Type = Type.GetType("NewClass")
Dim objInfo As MethodInfo =
objType.GetMethod("MyMethod")
Dim objParams() As Object = {1}
Dim i As Integer = _
DirectCast(objInfo.Invoke(Me, objParams), Integer)

Answer: B

K8 - Invoke(objNewClass

Question: 139

You are developing a method to decrypt data that was encrypted with the Triple DES Algorithm. The method accepts the following parameters: The byte array to be decrypted, which is named cipherMessageThe key, which is named keyAn initialization vector, which is named iv You need to decrypt the message by using the TripleDES class and place the result in a string. Which code segment should you use?

A. TripleDES^ des = gcnew TripleDESCryptoServiceProvider();des->BlockSize = cipherMessage->Length;
ICryptoTransform^ crypto = des->CreateDecryptor(key, iv);
MemoryStream^ cipherStream = gcnew MemoryStream(cipherMessage);
CryptoStream ^cryptoStream = gcnew CryptoStream(cipherStream, crypto, CryptoStreamMode::Read);
String^ message;StreamReader^ sReader = gcnew StreamReader(cryptoStream);
message = sReader->ReadToEnd();

B. TripleDES^ des = gcnew TripleDESCryptoServiceProvider();
des->FeedbackSize = cipherMessage->Length;
ICryptoTransform^ crypto = des->CreateDecryptor(key, iv);
MemoryStream^ cipherStream = gcnew MemoryStream(cipherMessage);
CryptoStream^ cryptoStream = gcnew CryptoStream(cipherStream, crypto,CryptoStreamMode::Read);
String^ message;StreamReader^ sReader = gcnew StreamReader(cryptoStream);
message = sReader->ReadToEnd();

C. TripleDES^ des = gcnew TripleDESCryptoServiceProvider();
ICryptoTransform^ crypto = des->CreateDecryptor();
MemoryStream^ cipherStream = gcnew MemoryStream(cipherMessage);
CryptoStream^ cryptoStream = gcnew CryptoStream(cipherStream, crypto,
CryptoStreamMode::Read);String^ message;
StreamReader^ sReader = gcnew StreamReader(cryptoStream);
message = sReader->ReadToEnd();

D. TripleDES^ des = gcnew TripleDESCryptoServiceProvider();
ICryptoTransform^ crypto = des->CreateDecryptor(key, iv);
MemoryStream^ cipherStream = gcnew MemoryStream(cipherMessage);
CryptoStream^ cryptoStream = gcnew CryptoStream( cipherStream, crypto,
CryptoStreamMode::Read);

String^ message;StreamReader^ sReader = gcnew StreamReader(cryptoStream);
message = sReader->ReadToEnd();

Answer: D

K8 – TripleDes Decrypting

70-536 MCTS .NET Foundations #27

noreply@blogger.com (Catto) — Wed, 26 Aug 2009 00:46:00 +0000

Hey Now,

Thx,

Catto

Q#111 – Q#120

Question: 111

You are developing a fiscal report for Company.com. Company.com has a main office in the United States and a satellite office in the UK. You need to ensure that when users in the satellite office generate the report, the current date is displayed in Mexican Spanish format. Which code segment should you use?

A. Dim DTFormat As DateTimeFormatInfo = _ New CultureInfo("es-MX",

False).DateTimeFormatDim DT As New DateTime( _ DateTime.Today.Year,

DateTime.Today.Month, DateTime.Today.Day)Dim strDate As String = _

DT.ToString(DTFormat.LongDatePattern)

B. Dim objCalendar As Calendar = _ New CultureInfo("es-MX", False).CalendarDim DT As New

DateTime( _ DateTime.Today.Year, DateTime.Today.Month, DateTime.Today.Day)Dim

strDate As String = DT.ToString

C. Dim strDate As String = _ DateTimeFormatInfo.CurrentInfo.GetMonthName( _

DateTime.Today.Month)

D. Dim strDate As String = _ DateTime.Today.Month.ToString("es-MX")

Answer: A

K8 – Good Old DTFormat

Question: 112

You create an application that stores information about your customers who reside in various regions. You are developing internal utilities for this application. You need to gather regional information about your customers in Canada. Which code segment should you use?

A. foreach (CultureInfo culture in CultureInfo.GetCultures(CultureTypes.SpecificCultures)) { //
Output the region information...}

B. CultureInfo cultureInfo = new CultureInfo(“CA”); // Output the region information…

C. RegionInfo regionInfo = new RegionInfo(“CA”); // Output the region information…

D. RegionInfo regionInfo = new RegionInfo(“”);if(regionInfo.Name == “CA”) {

// Output the region information...}

Answer: C

K8 – Q: regional info A: RegionInfo

Question: 113

You need to serialize an object of type List<int> in a binary format. The object is named data. Which code segment should you use?

A. BinaryFormatter^ formatter = gcnew BinaryFormatter();MemoryStream^ stream = gcnew
MemoryStream();
formatter->Serialize(stream, data);

B. BinaryFromatter formatter = gcnew BinaryFormatter();MemoryStream^ stream = gcnew
MemoryStream();
for (int i = 0; i < data->Count; i++) {
formatter->Serialize(stream, data[i]);}

C. BinaryFormatter^ formatter = gcnew BinaryFormatter();array<Byte>^ buffer = gcnew
array<Byte>(data->Count);MemoryStream^ stream = gcnew MemoryStream(buffer, true);
formatter->Serialize(stream, data);

D. BinaryFormatter^ formatter = gcnew BinaryFormatter();
MemoryStream^ stream = gcnew
MemoryStream();Capture c(formatter, stream);data->ForEach(gcnew Action<int>(%c, &Capture::Action));

Answer: A

K8 – no for loop needed

Question: 114

You are developing a server application that will transmit sensitive information on a network. You create an X509Certificate object named certificate and a TcpClient object named client. You need to create an SslStream to communicate by using the Transport Layer Security 1.0 protocol. Which code segment should you use?

A. SslStream ssl = new SslStream(client.GetStream());ssl.AuthenticateAsServer(certificate, false, SslProtocols.None, true);

B. SslStream ssl = new SslStream(client.GetStream());ssl.AuthenticateAsServer(certificate, false, SslProtocols.Ssl3, true);

C. SslStream ssl = new SslStream(client.GetStream());ssl.AuthenticateAsServer(certificate, false, SslProtocols.Ssl2, true);

D. SslStream ssl = new SslStream(client.GetStream()); ssl.AuthenticateAsServer(certificate, false, SslProtocols.Tls, true);

Answer: D

K8 - SslProtocols.Tls Tls

Q: Transmit Layer Security A: Tls

Question: 115

You are developing a method to call a COM component. You need to use declarative security to explicitly request the runtime to perform a full stack walk. You must ensure that all callers have the required level of trust for COM interop before the callers execute your method. Which attribute should you place on the method?

A. <SecurityPermission( _

SecurityAction.Demand, _

Flags:=SecurityPermissionFlag.UnmanagedCode) _>

B. <SecurityPermission( _

SecurityAction.LinkDemand, _

Flags:=SecurityPermissionFlag.UnmanagedCode) _>

C. <SecurityPermission( _

SecurityAction.As sert, _

Flags:=SecurityPermissionFlag.UnmanagedCode) _>

D. <SecurityPermission( _

SecurityAction.Deny, _

Flags:=SecurityPermissionFlag.UnmanagedCode) _>

Answer: A

K8 – Q: Level of trust COM A: SecurityAction.Deman

Question: 116

You are writing a method that accepts a string parameter named message. Your method must break the message parameter into individual lines of text and pass each line to a second method named Process. Which code segment should you use?

A. StringReader reader = new StringReader(message);
Process(reader.ReadToEnd());
reader.Close();

B. StringReader reader = new StringReader(message);
while (reader.Peek() != -1) {

string line = reader.Read().ToString();
Process(line);}reader.Close();

C. StringReader reader = new
StringReader(message);
Process(reader.ToString());
reader.Close();

D. StringReader reader = new StringReader(message);
while (reader.Peek() != -1) {

Process(reader.ReadLine());
}reader.Close();

Answer: D

K8 – Break the message into individual lines A: use Peek()

Question: 117

You are developing a method to encrypt sensitive data with the Data Encryption Standard (DES) algorithm. Your method accepts the following parameters:

The byte array to be encrypted, which is named messageAn encryption key, which is named keyAn initialization vector, which is named iv You need to encrypt the data. You also need to write the encrypted data to a MemoryStream object. Which code segment should you use?

A. DES des = new DESCryptoServiceProvider();
des.BlockSize = message.Length;
ICryptoTransform crypto = des.CreateEncryptor(key, iv); MemoryStream cipherStream = new MemoryStream();
CryptoStream c ryptoStream = new CryptoStream(cipherStream, crypto, CryptoStreamMode.Write);
cryptoStream.Write(message, 0, message.Length);

B. DES des = new DESCryptoServiceProvider();
ICryptoTransform crypto = des.CreateDecryptor(key, iv);
MemoryStream cipherStream = new MemoryStream();CryptoStream cryptoStream =
new CryptoStream(cipherStream, crypto, CryptoStreamMode.Write);
cryptoStream.Write(message, 0, message.Length);

C. DES des = new DESCryptoServiceProvider();ICryptoTrans form crypto =
des.CreateEncryptor();
MemoryStream cipherStream = new MemoryStream();CryptoStream cryptoStream =

new CryptoStream(cipherStream,
crypto, CryptoStreamMode.Write);
cryptoStream.Write(message, 0, message.Length);

D. DES des = new DESCryptoServiceProvider();
ICryptoTrans form crypto =
des.CreateEncryptor(key, iv);
MemoryStream cipherStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(cipherStream, crypto, CryptoStreamMode.Write);
cryptoStream.Write(message, 0, message.Length);

Answer: D

K8 – Q: Encrypt using DES A: des.CreateDecryptor(key, iv); & MemoryStream();

Question: 118

You are creating a new security policy for an application domain. You write the following lines of code.

PolicyLevel policy = PolicyLevel.CreateAppDomainLevel();
PolicyStatement noTrustStatement =
new PolicyStatement(
policy.GetNamedPermissionSet(“Nothing”));
PolicyStatement fullTrustStatement =
new PolicyStatement(
policy.GetNamedPermissionSet(“FullTrust”));

You need to arrange code groups for the policy so that loaded assemblies default to the Nothing permission set. If the assembly originates from a trusted zone, the security policy must grant the assembly the FullTrust permission set. Which code segment should you use?

A. CodeGroup group1 = new FirstMatchCodeGroup(
new ZoneMembershipCondition(SecurityZone.Trusted),
fullTrustStatement);
CodeGroup group2 = new UnionCodegroup( new AllMembershipCondition(),
noTrustStatement); group1.AddChild(group2);

B. CodeGroup group1 = new FirstMatchCodeGroup(
new AllMembershipCondition(), noTrustStatement); CodeGroup group2 = new UnionCodeGroup(
new ZoneMembershipCondition(SecurityZone.Trusted),
fullTrustStatement);
group1.AddChild(group2);

C. CodeGroup group = new UnionCodeGroup(
new ZoneMembershipCondition(SecurityZone.Trusted),
fullTrustStatement);

D. CodeGroup group = new FirstMatchCodeGroup(
new AllMembershipCondition(), noTrustStatement);

Answer: B

K8 – 2 code groups needed. First use AllMembershipCondition to all

Question: 119

You develop a service application named PollingService that periodically calls long-running procedures. These procedures are called from the DoWork method. You use the following service application code:

partial class PollingService :
ServiceBase {
bool blnExit = false;
public PollingService() {}
protected override void OnStart(string[] args) {
do {
DoWork();
} while (!blnExit);
}

protected override void OnStop() {
blnExit = true;
}
private void DoWork() {

} }

When you attempt to start the service, you receive the following error message: Could not start the PollingService service on the local computer. Error 1053: The service did not respond to the start or control request in a timely fashion. You need to modify the service application code so that the service starts properly. What should you do?

A. Move the loop code into the constructor of the service class from the OnStart method.

B. Drag a timer component onto the design surface of the service. Move the calls to the long-running procedure from the OnStart method into the Tick event procedure of the timer, set
the Enabled property of the timer to True, and call the Start method of the timer in the OnStart method.

C. Add a class-level System.Timers.Timer variable to the service class code. Move the call to the DoWork method into the Elapsed event procedure of the timer, set the Enabled property of the timer to True, and call the Start method of the timer in the OnStart method.

D. Move the loop code from the OnStart method into the DoWork method.

Answer: C

K8 Add a class level timer

Question: 120

You need to write a code segment that transfers the contents of a byte array named dataToSend by using a NetworkStream object named netStream. You need to use a cache of size 8,192
bytes. Which code segment should you use?

A. MemoryStream memStream = new
MemoryStream(8192);
memStream.Write(dataToSend, 0, (int) netStream.Length);

B. MemoryStream memStream = new
MemoryStream(8192);
netStream.Write(dataToSend, 0, (int) memStream.Length);

C. BufferedStream bufStream = new BufferedStream(netStream, 8192);
bufStream.Write(dataToSend, 0, dataToSend.Length);

D. BufferedStream bufStream = new BufferedStream(netStream);
bufStream.Write(dataToSend, 0, 8192);

Answer: C

K8 – Transfer contents of byte array with cashe limit use BufferedsTream(netStream, 8192)

70-536 MCTS .NET Foundations #26

noreply@blogger.com (Catto) — Tue, 25 Aug 2009 02:38:00 +0000

Hey Now,

Thx,

Catto

Q#100 – Q#110

#26 below

Question: 100

You are writing code for user authentication and authorization. The username, password, and roles are stored in your application data store. You need to establish a user security context that will be used for authorization checks such as IsInRole. You write the following code segment to authorize the user.

if (!TestPassword(userName, password))
throw new Exception(“could not authenticate user”);
String[] userRolesArray = LookupUserRoles(userName);
You need to complete this code so that it establishes the user
security context. Which code segment should you use?

A. GenericIdentity ident = new GenericIdentity(userName);
GenericPrincipal currentUser = New GenericPrincipal(ident, userRolesArray);
Thread.CurrentPrincipal = currentUser;

B. WindowsIdentity ident = new WindowsIdentity(userName);
WindowsPrincipal currentUser = new WindowsPrincipal(ident);
Thread.CurrentPrincipal = currentUser;

C. NTAccount userNTName = new NTAccount(userName);
GenericIdentity ident = new enericIdentity(userNTName.Value);
GenericPrincipal currentUser = new GenericPrincipal(ident, userRolesArray);
Thread.CurrentPrincipal = currentUser;

D. IntPtr token = IntPtr.Zero;token = LogonUserUsingInterop(username, encryptedPassword);
WindowsImpersonationContext ctx = WindowsIdentity.Impersonate(token);

Answer: A

K8 – GenericIdentity

Question: 101

You create an application that stores information about your customers who reside in various regions. You are developing internal utilities for this application. You need to gather regional information about your customers in Canada. Which code segment should you use?

A. For Each objCulture As CultureInfo In
_CultureInfo.GetCultures(CultureTypes .SpecificCultures)
...Next

B. Dim objCulture As New CultureInfo("CA")

C. Dim objRegion As New RegionInfo("CA")

D. Dim objRegion As New RegionInfo("")If objRegion.Name = "CA" Then

...End If

Answer: C

Gather regional information RegionInfo

Question: 102

You create an application to send a message by e-mail. An SMTP server is available on the local subnet. The SMTP server is named smtp.Company.com. To test the application, you use a source address, me@Company.com, and a target address, you@Company.com. You need to transmit the e-mail message. Which code segment should you use?

A. MailAddress addrFrom(“me@Company.com”, “Me”);
MailAddress addrTo(“you@Company.com”, “You”);
MailMessage message(%addrFrom, %addrTo);
message.Subject = “Greetings!”;
message.Body = “Test”;message.Dispose();

B. String^strSmtpClient = “smtp.Company.com”;
String^ strFrom = “me@Company.com”;
String^ strTo = “you@Company.com”;
String^ strSubject = “Greetings!”;String^ strBody = “Test”;
MailMessage msg(strFrom, strTo, strSubject, strSmtpClient);

C. MailAddress addrFrom(“me@Company.com”);
MailAddress addrTo(“you@Company.com”);
MailMessage message(%addrFrom, %addrTo);
message.Subject = “Greetings!”;
message.body = “Test”;SmtpClient lient(“smtp.Company.com”);
client.Send(%message);

D. MailAddress^ addrFrom = gcnew MailAddress(“me@Company.com”, “Me”);
MailAddress^ addrTo = gcnew MailAddress(“you@Company.com”, “You”);
MailMessage^ message = gcnew MailMessage(addrFrom, addrTo);
message->Subject = “Greetings!”;
message->Body = “Test”;
SocketInformation info;
Socket^ client = gcnew Socket(info);
System::Text::ASCIIEncoding^ enc = gcnew System::Text::ASCIIEncoding();
array<unsigned char>^ msgBytes = enc-
>GetBytes(message->ToString());
client->Send(msgBytes);

Answer: C

K8 - Need sent at end

Question: 103

You write the following code segment to call a function from the Win32 Application Programming Interface (API) by using platform invoke.

String^ personName = “N?el”;
String^ msg = "Welcome " + personName + " to club "!";bool rc = User32API::MessageBox(0, ms g, personName, 0);
You need to define a method prototype that can best marshal the string data. Which code segment should you use?

A. [DllImport("user32", CharSet = CharSet::Ansi)]extern bool MessageBox(int hWnd,
String^ text,
String^ caption,
unsigned int type);}

B. [DllImport("user32", EntryPoint = "MessageBoxA", CharSet = CharSet::Ansi)]extern
bool MessageBox(int hWnd,
[MarshalAs(UnmanagedType::LPWStr)]String^ text,
[MarshalAs(UnmanagedType::LPWStr)]String^ caption,
unsigned int type);}

C. [DllImport("user32", CharSet = CharSet::Unicode)]extern bool MessageBox(int hWnd,
String^ text,
String^ caption,
unsigned int type);}

D. [DllImport("user32", EntryPoint = "MessageBoxA", CharSet =
CharSet::Unicode)]extern bool MessageBox(int hWnd,
[MarshalAs(UnmanagedType.LPWStr)]String^ text,
[MarshalAs(UnmanagedType.LPWStr)]String^ caption,
unsigned int type);}

Answer: C

K8 – Q: best marshal the string data. A: Unicode CharSet

Question: 104

You are creating an application that retrieves values from a custom section of the application configuration file. The custom section uses XML as shown in the following block.

You need to write a code segment to define a class named Role. You need to ensure that the Role class is initialized with values that are retrieved from the custom section of the configuration
file. Which code segment should you use?

A. public ref class Role : public ConfigurationElement {
protected :
static String^ _ElementName = “name”;
public :
[ConfigurationProperty("role")]
property String^ Name {
String^ get() {return ((String^)base[“role”]);}

}};

B. public ref class Role : public ConfigurationElement {
protected :
static String^ _ElementName = “role”;
public :
[ConfigurationProperty("name", IsRequired = true)]
property String^ Name {
String^ get() {return ((String^)base[“name”]);}
}};

C. public ref class Role : public ConfigurationElement {
private :
String^ _name;
protected :
static String^ _ElementName = “role”;
public :
[ConfigurationProperty("name")]
property String^ Name {
String^ get() {return_name;}
}};

D. public ref class Role : public ConfigurationElement {
private :
String^ _name;
protected :
static String^ _ElementName = “name”;
public :
[ConfigurationProperty("role", IsRequired = true)]
property String^ Name {
String^ get() {return_name;}
}};

Answer: B

K8 - ElementName role & protected

Question: 105

You create a method that runs by using the credentials of the end user. You need to use Microsoft Windows groups to authorize the user. You must add a code segment that identifies whether a user is in the local group named Clerk. Which code segment should you use?

A. WindowsIdentity currentUser = WindowsIdentity.GetCurrent();
foreach
(IdentityReference grp in currentUser.Groups) {
NTAccount grpAccount =
((NTAccount)grp.Translate(typeof(NTAccount)));
isAuthorized = grpAccount.Value.Equals(Environment.MachineName + @”\Clerk”);
if(isAuthorized) break;}

B. WindowsPrincipal currentUser =
(WindowsPrincipal)Thread.CurrentPrincipal;
isAuthorized = currentUser.IsInRole(“Clerk”);

C. GenericPrincipal currentUser =
(GenericPrincipal) Thread.CurrentPrincipal;
isAuthorized = currentUser.IsInRole(“Clerk”):

D. WindowsPrincipal currentUser =
(WindowsPrincipal)Thread.CurrentPrincipal;
isAuthorized = currentUser.IsInRole(Environment.MachineName);

Answer: B

K8 – Authorize user & user in local group WindowsPrincipal

Question: 106

A. Dim MailFrom As New MailAddress("me@Company.com", "Me")
Dim MailTo As New MailAddress("you@Company.com", "You")
Dim Message As New MailMessage(MailFrom, MailTo)Message.Subject =
"Greetings"Message.Body = "Test"Message.Dispose()

B. Dim SMTPClient As String = "smtp.Company.com"
Dim MailFrom As String = me@Company.com
Dim MailTo As String = you@Company.com
Dim Subject As String = "Greetings"
Dim Body As String = "Test"Dim Message As New MailMessage(MailFrom, MailTo, Subject, SMTPClient)

C. Dim MailFrom As New MailAddress("me@Company.com", "Me")
Dim MailTo As New MailAddress("you@Company.com", "You")
Dim Message As New MailMessage(MailFrom, MailTo)Message.Subject =
"Greetings"Message.Body = "Test"
Dim objClient As New SmtpClient("smtp.Company.com")objClient.Send(Message)

D. Dim MailFrom As New MailAddress("me@Company.com", "Me")

Dim MailTo As New MailAddress("you@Company.com", "You")
Dim Message As New MailMessage(MailFrom, MailTo)Message.Subject =
"Greetings"Message.Body = "Test"
Dim Info As New SocketInformationDim Client As New Socket(Info)
Dim Enc As New ASCIIEncodingDim Bytes() As Byte =
Enc.GetBytes(Message.ToString)Client.Send(Bytes)

Answer: C

K8 – Send email objClient.Send(

Question: 107

You need to write a code segment that performs the following tasks: Retrieves the name of each paused service. Passes the name to the Add method of Collection1. Which code segment should you use?

A. ManagementObjectSearcher searcher =
new ManagementObjectSearcher(
“Select * from Win32_Service where State = ‘Paused’”); foreach (ManagementObject svc in searcher.Get()) {
Collection1.Add(svc[“DisplayName”]);}

B. ManagementObjectSearcher searcher =
new ManagementObjectSearcher( "Select * from Win32_Service", "State =
‘Paused’”);foreach (ManagementObject svc in searcher.Get()) { Collection1.Add(svc[“DisplayName”]);}

C. ManagementObjectSearcher searcher =
new ManagementObjectSearcher(
“Select * from Win32_Service”);foreach (ManagemetnObject svc in searcher.Get()) {
if ((string) svc["State"] == "'Paused'") {
Collection1.Add(svc[“DisplayName”]); }}

D. ManagementObjectSearcher searcher =
new ManagementObjectSearcher();searcher.Scope = new
ManagementScope(“Win32_Service”);foreach (ManagementObject svc in
searcher.Get()) {
if ((string)svc["State"] == "Paused") {
Collection1.Add(svc[“DisplayName”]); }}

Answer: A

K8 – inline T-SQL where State = ‘Paused’ will work

Question: 108

You create a class library that is used by applications in three departments of your company. The library contains a Department class with the following definition.

public class Department {
public string name;
public string manager;
}

Each application uses a custom configuration section to store department-specific values in the application configuration file as shown in the following code.

<Department>
<name>Hardware</name>
<manager>Company</manager>
</Department>

You need to write a code segment that creates a Department object instance by using the field values retrieved from the application configuration file. Which code segment should you use?

A. public class deptElement : ConfigurationElement {
protected override void DeserializeElement(
XmlReader reader, bool serializeCollectionKey) {
Department dept = new Department();
dept.name = ConfigurationManager.AppSettings[“name”];
dept.manager =
ConfigurationManager.AppSettings[“manager”];
return dept; } }

B. public class deptElement: ConfigurationElement {
protected override void DeserializeElement(
XmlReader reader, bool serializeCollectionKey) {
Department dept = new Department();
dept.name = reader.GetAttribute(“name”);
dept.manager = reader.GetAttribute(“manager”); } }

C. public class deptHandler : IConfigurationSectionHandler {
public object Create(object parent, object configContext,
System.Xml.XmlNode section) {
Department dept = new Department();
dept.name = section.SelectSingleNode(“name”).InnerText;
dept.manager = section.SelectSingleNode(“manager”).InnerText;
return dept; } }

D. public class deptHandler : IConfigurationSectionHandler {
public object Create(object parent, object configContext,
System.Xml.XmlNode section) {
Department dept = new Deprtment();
dept.name = section.Attributes[“name”].Value;
dept.manager = section.Attributes[“manager”].Value;
return dept; } }

Answer: C

K8 – SelectSingleNode

Question: 109

You need to write a code segment that transfers the first 80 bytes from a stream variable named stream1 into a new byte array named byteArray. You also need to ensure that the code segment assigns the number of bytes that are transferred to an integer variable named bytesTransferred. Which code segment should you use?

A. bytesTransferred = stream1.Read(byteArray, 0, 80);

B. for (int i = 0; i < 80; i++) {
stream1.WriteByte(byteArray[i]);
bytesTransferred = i;
if (!stream1.CanWrite) {
break; }}

C. while (bytesTransferred < 80) {
stream1.Seek(1, SeekOrigin.Current);
byteArray[bytesTransferred++] =
Convert.ToByte(stream1.ReadByte());}

D. stream1.Write(byteArray, 0, 80);
bytesTransferred = byteArray.Length;

Answer: A

K8 – Bytes from stream1 read into byteArray

Question: 110

You are testing a component that serializes the Meeting class instances so that they can be saved to the file system. The Meeting class has the following definition: public ref

class Meeting {
private :
String^ title;
public :
int roomNumber;
array<String^>^ invitees;
Meeting(){}
Meeting(String^ t){
title = t; } };

The component contains a procedure with the following code segment.
Meeting^ myMeeting = gcnew Meeting(“Goals”); myMeeting->roomNumber = 1100;
array<String^>^ attendees = gcnew array<String^>(2)
{“Company”, “Mary”}; myMeeting->invitees = attendees;
XmlSerializer^ xs = gcnew XmlSerializer(__typeof(Meeting));
StreamWriter^ writer = gcnew StreamWriter(“C:\\Meeting.xml”);
xs->Serialize(writer, myMeeting);
writer->Close();

You need to identify the XML block that is written to the C:\Meeting.xml file as a result of running this procedure. Which XML block represents the content that will be written to the C:\Meeting.xml file?

B. <?xml version="1.0" encoding="utf-8"?> |
<Meeting xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<roomNumber>1100</roomNumber>
<invitees>
<string>Company</string>
<string>Mary</string>
</invitees>
</Meeting>

C. <?xml version="1.0" encoding="utf-8"?>
<Meeting xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
title="Goals">
<roomNumber>1100</roomNumber>
<invitees>
<string>Company</string>
<string>Mary</string>
</invitees>
</Meeting>

D. <?xml version="1.0" encoding="utf-8"?>
<Meeting xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<roomNumber>1100</roomNumber>
<invitees>
<string>Company</string>
</invitees>
<invitees>

Answer: B

70-536 MCTS .NET Foundations #25

noreply@blogger.com (Catto) — Tue, 25 Aug 2009 01:49:00 +0000

Hey Now,

Thx,

Catto

Q#80 – Q#99

Question: 80

You work as a developer at Company.com. You are developing an application to create a new file on the local file system.

You need to define specific security settings for the file. You must deny the file inheritance of any default security settings.
What should you do?

Answer: ?

K8 – not so good of a question. No answers or answer.

Question: 81

You are creating a class to compare a specially-formatted string. The default collation comparisons do not apply. You need to implement the IComparable(Of String) interface. Which code segment should you use?

A. Public Class Person

Implements IComparable(Of String)Public Function CompareTo(ByVal other As String)

As _Integer Implements IComparable(Of String).CompareTo...End FunctionEnd Class

B. Public Class Person

Implements IComparable(Of String)Public Function CompareTo(ByVal other As Object)

As _Integer Implements IComparable(Of String).CompareTo...End FunctionEnd Class

C. Public Class Person

Implements IComparable(Of String)Public Function CompareTo(ByVal other As String)

_As Boolean Implements IComparable(Of String).CompareTo...End FunctionEnd Class

D. Public Class Person

Implements IComparable(Of String)Public Function CompareTo(ByVal other As Object)

_As Boolean Implements IComparable(Of String).CompareTo...End FunctionEnd Class

Answer: A

K8 – String & IComparable as int

Question: 82

You work as a developer at Company.com. You create a service application that monitors free space on a hard disk drive. You must ensure that the service application runs in the background and monitors the free space every minute.

What should you do?

Answer:

K8 – Another not so good question no answers

Question: 83

You are creating a class that performs complex financial calculations. The class contains a method named GetCurrentRate that retrieves the current interest rate and a variable named currRate that stores the current interest rate.
You write serialized representations of the class. You need to write a code segment that updates the currRate variable with the current interest rate when an instance of the class is deserialized. Which code segment should you use?

A. [OnSerializing]internal void UpdateValue (StreamingContext context) {

currRate = GetCurrentRate();}

B. [OnSerializing]internal void UpdateValue(SerializationInfo info) {

info.AddValue(“currentRate”, GetCurrentRate());}

C. [OnDeserializing]internal void UpdateValue(SerializationInfo info) {

info.AddValue(“currentRate”, GetCurrentRate());}

D. [OnDeserialized]internal void UpdateValue(StreamingContext context) {

currRate = GetCurrentRate();}

Answer: D

K8 – question reads when instance of class is deserialized. Answer is OnDeserialized

Question: 84

You need to write a multicast delegate that accepts a DateTime argument. Which code segment should you use?

A. Public Delegate Function PowerDeviceOn( _

ByVal result As Boolean, _

ByVal autoPowerOff As DateTime) _

As Integer

B. Public Delegate Function PowerDeviceOn( _

ByVal sender As Object, _

ByVal autoPowerOff As EventArgs) _

As Boolean

C. Public Delegate Sub PowerDeviceOn( _

ByVal autoPowerOff As DateTime)

D. Public Delegate Function PowerDeviceOn( _

ByVal autoPowerOff As DateTime) _

As Boolean

Answer: C

K8 – c is the only Sub not a function isn’t that something?

Question: 85

You create a class library that is used by applications in three departments of your company. The library contains a Department class with the following definition. public

ref class Department {

public :

String^ name;

String^ manager;}; Each application uses a custom configuration section to store

department-specific values in the application configuration file as shown in the following

code.

<name>Hardware</name>

<manager>Company</manager>

</Department>

You need to write a code segment that creates a Department object instance by using the field values retrieved from the application configuration file. Which code segment should you use?

A. public ref class deptElement : public ConfigurationElement {

protected :
override void DeserializeElement(XmlReader^ reader,
bool^ serializeCollectionKey) {
Department^ dept = gcnew Department();
dept->name = ConfigurationManager::AppSettings[“name”];
dept->manager = ConfigurationManager::AppSettings[“manager”];
return dept; }};

B. public ref class deptElement : public ConfigurationElement {
protected :
override void DeserializeElement(XmlReader^ reader,
bool^ serializeCollectionKey) {
Department^ dept = gcnew Department();
dept->name = reader->GetAttribute(“name”);
dept->manager = reader->GetAttribute(“manager”); }};

C. public ref class deptHandler :
public IConfigurationSectionHandler {
public :
Object^ Create(Object^ parent, Object^ configContext,
System.Xml.XmlNode section) {
Department^ dept = gcnew Department();
dept->name = section->SelectSingleNode(“name”)->InnerText;
dept->manager = section->SelectSinglenode(“manager”)->InnerText;
return dept; }};
D. public ref class deptHandler : public IConfigurationSectionHandler {

public :
Object^ Create(Object^ parent, Object^ configContext,
System.Xml.XmlNode^ section) {
Department^ dept = gcnew Department();
dept->name = section->Attributes[“name”].Value;
dept->manager = section->Attributes[“manager”].Value;
return dept; }};

Answer: C

K8 – IconfigurationSectionHandler

Question: 86

You need to read the entire contents of a file named Message.txt into a single string variable. Which code segment should you use?

A. String^ result = nullptr;StreamReader^ reader = gcnew

StreamReader(“Message.txt”);result = reader->Read().ToString();

B. String^ result = nullptr;StreamReader^ reader = gcnew

StreamReader(“Message.txt”);
result = reader->ReadToEnd();

C. String^ result =String::Empty;StreamReader^ reader = gcnew

StreamReader(“Message.txt”); while (!reader->EndOfStream) {

result += reader->ToString();}

D. String^ result = nullptr;StreamReader^ reader = gcnew StreamReader(“Message.txt”); result =

reader->ReadLine();

Answer: B

K8 – ReadToEnd Now that I’ve seen this question a few times it gets easier.

Question: 87

You write the following code to call a function from the Win32 Application Programming Interface (API) by using platform invoke.

Dim r As Integer = MessageBox(hWnd, strText, strCaption, strType)

You need to define a method prototype. Which code segment should you use?

A. <DllImport("user32")> _Function MessageBox( _

ByVal hWnd As IntPtr, ByVal text As String, _

ByVal Caption As String, ByVal t As UInt32) As IntegerEnd Function

B. <DllImport("user32")> _Function MessageBoxA( _

ByVal hWnd As IntPtr, ByVal text As String, _

ByVal Caption As String, ByVal t As UInt32) As IntegerEnd Function

C. <DllImport("user32")> _Function Win32API_User32_MessageBox ( _

ByVal hWnd As IntPtr, ByVal text As String, _

ByVal Caption As String, ByVal t As UInt32) As IntegerEnd Function

D. <DllImport("C:\WINDOWS\system32\user32.dll ")> _Function MessageBox( _

ByVal hWnd As IntPtr, ByVal text As String, _

ByVal Caption As String, ByVal t As UInt32) As IntegerEnd Function

Answer: A

K8 – User32 & function messagebox

Question: 88

You are writing an application that uses isolated storage to store user preferences. The application uses multiple assemblies. Multiple users will use this application on the same

computer. You need to create a directory named Preferences in the isolated storage area that is scoped to the current Microsoft Windows identity and assembly. Which code segment should you use?

A. IsolatedStorageFile^ store;store = IsolatedStorageFile::GetUserStoreForAssembly();store-

>CreateDirectory(“Preferences”);

B. IsolatedStorageFile^ store;store =

IsolatedStorageFile::GetMachineStoreForAssembly();store->CreateDirectory(“Preferences”);

C. IsolatedStorageFile^ store;store = IsolatedStorageFile::GetUserStoreForDomain();store-

>CreateDirectory(“Preferences”);

D. IsolatedStorageFile^ store;store =

IsolatedStorageFile::GetMachineStoreForApplication();store-

>CreateDirectory(“Preferences”);

Answer: A

K8 – GetUserStoreForAssembly

Question: 89

You are writing an application that uses isolated storage to store user preferences. The application uses multiple assemblies. Multiple users will use this application on the same
computer. You need to create a directory named Preferences in the isolated storage area that is scoped to the current Microsoft Windows identity and assembly. Which code segment should you use?

A. IsolatedStorageFile store;store =

IsolatedStorageFile.GetUserStoreForAssembly();store.CreateDirectory(“Preferences”);

B. IsolatedStorageFile store;store =

IsolatedStorageFile.GetMachineStoreForAssembly();store.CreateDirectory(“Preferences”);

C. IsolatedStorageFile store;store =

IsolatedStorageFile.GetUserStoreForDomain();store.CreateDirectory(“Preferences”);

D. IsolatedStorageFile store;store =

IsolatedStorageFile.GetMachineStoreForApplication();store.CreateDirectory(“Preferences”);

Answer: A

K8 - GetUserStoreForAssembly

Question: 90

You are developing a method to call a COM component. You need to use declarative security to explicitly request the runtime to perform a full stack walk. You must ensure that all callers have the required level of trust for COM interop before the callers execute your method. Which attribute should you place on the method?

A. [SecurityPermission(

SecurityAction::Demand,

Flags=SecurityPermissionFlag::UnmanagedCode)]

B. [SecurityPermission(

SecurityAction::LinkDemand,

Flags=SecurityPermissionFlag::UnmanagedCode)]

C. [SecurityPermission(

SecurityAction::Assert,

Flags = SecurityPermissionFlag::UnmanagedCode)]

D. [SecurityPermission(

SecurityAction::Deny,

Flags = SecurityPermissionFlag::UnmanagedCode)]

Answer: A

K8 – Demand to ensure all callers have required level of trust

Question: 91

You are using the Microsoft Visual Studio 2005 IDE to examine the output of a method that returns a string. You assign the output of the method to a string variable named fName. You need to write a code segment that prints the following on a single line The message: "Test Failed: " The value of fName if the value of fName does not equal "Company" You also need to ensure that the code segment simultaneously facilitates uninterrupted execution of the application. Which code
segment should you use?

A. Debug::Assert(fName == “Company”, “Test Failed: ”, fName);

B. Debug::WriteLinelf(fName != “Company”, fName, “Test Failed”);

C. if (fName != "Company") {

Debug::Print(“Test Failed: ”);

Debug::Print(fName);}

D. if (fName != "Company") {

Debug::WriteLine(“Test Failed: ”);

Debug::WriteLine(fName);}

Answer: B

K8 - WriteLinelf

Question: 92

Your company uses an application named Application1 that was compiled by using the .NET Framework version 1.0. The application currently runs on a shared computer on which the .NET Framework versions 1.0 and 1.1 are installed. You need to move the application to a new computer on which the .NET Framework versions 1.1 and 2.0 are installed. The application is compatible with the .NET Framework 1.1, but it is incompatible with the .NET Framework 2.0. You need to ensure that the application will use the .NET Framework version 1.1 on the new computer. What should you do?

A. Add the following XML element to the application configuration file.

B. Add the following XML element to the application configuration file.

C. Add the following XML element to the machine configuration file.

D. Add the following XML element to the machine configuration file.

Answer: A

K8 – set supportedRuntime version="1.1.4322"

Question: 93

You are developing a method that searches a string for a substring. The method will be localized to Italy. Your method accepts the following parameters: The string to be searched, which is named searchListThe string for which to search, which is named searchValue You need to write the code. Which code segment should you use?

A. return searchList->IndexOf(searchValue);

B. CompareInfo^ comparer =
gcnew CultureInfo(“it-IT”)::CompareInfo; return comparer->Compare(searchList, search Value);

C. CultureInfo^ comarer = gcnew CultureInfo(“it-IT”);
if (searchList->IndexOf(searchValue) > 0) {
return true;} else {
return false;}

D. CompareInfo^ comparer = gcnew CultureInfo(“it-IT”)::CompareInfo;
if (comparer->IndexOf(searchList, searchValue) > 0) {
return true;
} else {
return false;}

Answer: D

K8 – Method that searches string for substring CompareInfo IndexOf

Question: 94

You need to write a code segment that will create a common language runtime (CLR) unit of isolation within an application. Which code segment should you use?

A. AppDomainSetup^ mySetup =
AppDomain::CurrentDomain::SetuupInformation;
mySetup->ShadowCopyFiles = “true”;

B. System::Diagnostics::Process^ myProcess;
myProcess = gcnew System::Diagnostics::Process();

C. AppDomain^ domain;
domain = AppDomain::CreateDomain(“CompanyDomain”);

D. System::ComponentModel::Component^ myComponent;
myComponent = gcnew
System::ComponentModel::Component();

Answer: C

K8 – CLR isolation Appdomaion CreateDomain

Question: 95

You are loading a new assembly into an application. You need to override the default evidence for the assembly. You require the common language runtime (CLR) to grant the assembly a
permission set, as if the assembly were loaded from the local intranet zone. You need to build the evidence collection. Which code segment should you use?

A. Evidence evidence = new Evidence(
Assembly.GetExecutingAssembly().Evidence );

B. Evidence evidence = new Evidence();
evidence.AddAssembly(new Zone(SecurityZone.Intranet));

C. Evidence evidence = new Evidence()
;evidence.AddHost(new Zone(SecurityZone.Intranet));

D. Evidence evidence = new Evidence(
AppDomain.CurrentDomain.Evidence );

Answer: C

K8 – Loading Assembly use AddHost along with the Zone(SecurityZone.Intranet)

Question: 96

You are developing a class library that will open the network socket connections to computers on the network. You will deploy the class library to the global assembly cache and grant it full trust. You write the following code to ensure usage of the socket connections.
SocketPermission permission = new

SocketPermission(PermissionState.Unrestricted);
permission.Assert();
Some of the applications that use the class library might not have the necessary permissions to open the network socket
connections. You need to cancel the assertion. Which code segment should you use?

A. CodeAccessPermission.RevertAssert();

B. CodeAccessPermission.RevertDeny();

C. permission.Deny();

D. permission.PermitOnly();

Answer: A

K8 question text Cancel Assertion - Answer RevertAssert();

Question: 97

You are changing the security settings of a file named MyData.xml. You need to preserve the existing inherited access rules. You also need to prevent the access rules from inheriting changes in the future. Which code segment should you use?

A. Dim objSecurity As New FileSecurity( _
"MyData.xml", AccessControlSections.All)objSecurity.SetAccessRuleProtection(True, True)File.SetAccessControl("MyData.xml", objSecurity)

B. Dim objSecurity As New FileSecurity()objSecurity.SetAccessRuleProtection(True,
True)File.SetAccessControl("MyData.xml", objSecurity)

C. Dim objSecurity As FileSecurity = _File.GetAccessControl("MyData.xml")objSecurity.SetAccessRuleProtection(True, True)

D. Dim objSecurity As FileSecurity =
_File.GetAccessControl("MyData.xml")objSecurity.SetAuditRuleProtection(True, True)File.SetAccessControl("myData.xml", objSecurity)

Answer: A

K8 – Q: prevent the access rules from inheriting changes A: SetAccessRuleProtection

Question: 98

01 public void StartService(string serverName){

02 ServiceController crtl = new

03 ServiceController(“FileService”);

04 if (crtl.Status == ServiceControllerStatus.Stopped){

05 }

06 }

You need to develop a routine that will start FileService if it stops. The routine must start FileService on the server identified by the serverName input parameter. Which two lines of code should you add to the code segment? (Each correct answer presents part of the solution. Choose two.)

A. Insert the following line of code between lines 03 and 04:crtl.ServiceName = serverName;

B. Insert the following line of code between lines 03 and 04:crtl.MachineName = serverName;

C. Insert the following line of code between lines 03 and 04:crtl.Site.Name = serverName;

D. Insert the following line of code between lines 04 and 05:crtl.Continue();

E. Insert the following line of code between lines 04 and 05:crtl.Start();

F. Insert the following line of code between lines 04 and 05:crtl.ExecuteCommand(0);

Answer: B,E

Q: need to start if stopped therefore E & MachineName in B will start it on the serverName

Question: 99

A. Debug.Assert(fName = "Company", "Test Failed: ", fName)

B. Debug.WriteLineIf(fName <> "Company", _ fName, "Test Failed")

C. If fName <> "Company" Then
Debug.Print("Test Failed: ")
Debug.Print(fName)End If

D. If fName <> "Company" Then
Debug.WriteLine("Test Failed: ")
Debug.WriteLine(fName)End If

Answer: B

K8 – WriteLineIf prints the message if

70-536 MCTS .NET Sample Questions #24

noreply@blogger.com (Catto) — Mon, 24 Aug 2009 00:22:00 +0000

Hey Now,

Thx,

Catto

Q#60 – Q#79

Question: 60

You are creating a strong-named assembly named Company1 that will be used in multiple applications. Company1 will be rebuilt frequently during the development cycle. You need to ensure that each time the assembly is rebuilt it works correctly with each application that uses it. You need to configure the computer on which you develop Company1 such that each application uses the latest build of Company1. Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A. Create a DEVPATH environment variable that points to the build output directory for the strong-named assembly.

B. Add the following XML element to the machine configuration file:

C. Add the following XML element to the machine configuration file:

<assemblyIdentity name="Company1"

publicKeyToken="32ab4ba45e0a69a1"

language="en-US" version="*.*.*.*" />

</dependentAssembly>

D. Add the following XML element to the configuration file of each application that uses the

strong-named assembly:

E. Add the following XML element to the configuration file of each application that uses the

strong-named assembly:

<assemblyIdentity name="Company1"

publicKeyToken="32ab4ba45e0a69a1"

language="en-US" version="*.*.*.*" />

</dependentAssembly>

Answer: A, B

K8 – developerInstallation = true & create a devpath to point to build.

Question: 61

You are creating a class to compare a specially-formatted string. The default collation comparisons do not apply. You need to implement the IComparable<string> interface. Which code segment should you use?

A. public ref class Person : public IComparable<String^>{

public : virtual Int32 CompareTo(String^ other){

}}

B. public ref class Person : public IComparable<String^>{

public : virtual Int32 CompareTo(Object^ other){

}}

C. public ref class Person : public IComparable<String^>{

public : virtual Boolean CompareTo(String^ other){

}}

D. public ref class Person : public IComparable<String^>{

public : virtual Boolean CompareTo(Object^ other){

}}

Answer: A

K8 – use Int32 & CompareTo String

Question: 62

You are developing a method to hash data for later verification by using the MD5 algorithm. The data is passed to your method as a byte array named message. You need to compute the hash of the incoming parameter by using MD5. You also need to place the result into a byte array. Which code segment should you use?

A. Dim objAlgo As HashAlgorithm = HashAlgorithm.Create("MD5")

Dim hash() As Byte = objAlgo.ComputeHash(message)

B. Dim objAlgo As HashAlgorithm = HashAlgorithm.Create("MD5")
Dim hash() As Byte = BitConverter.GetBytes(objAlgo.GetHashCode)

C. Dim objAlgo As HashAlgorithmobjAlgo =

HashAlgorithm.Create(message.ToString)
Dim hash() As Byte = objAlgo.Hash

D. Dim objAlgo As HashAlgorithm = HashAlgorithm.Create("MD5")
Dim hash() As

ByteobjAlgo.TransformBlock(message, 0, message.Length, hash, 0)

Answer: A

K8 – toss c out & ComputeHash is important method too.

Question: 63

You write the following custom exception class named CustomException.

Public Class CustomException

Inherits ApplicationException

Public Shared COR_E_ARGUMENT As Int32 = &H80070057

Public Sub New(ByVal strMessage As String)

MyBase.New(strMessage)

HResult = COR_E_ARGUMENT

End SubEnd Class

You need to write a code segment that will use the CustomException class to immediately return control to the COM caller. You also need to ensure that the caller has access to the error code. Which code segment should you use?

A. Return Marshal.GetExceptionForHR( _

CustomException.COR_E_ARGUMENT)

B. Return CustomException.COR_E_ARGUMENT

C. Marshal.ThrowExceptionForHR( _

CustomException.COR_E_ARGUMENT)

D. Throw New CustomException("Argument is out of bounds")

Answer: D

K8 Throw an exeption so the control will go to the COM

Question: 64

You need to return the contents of an isolated storage file as a string. The file is machine-scoped and is named Settings.dat. Which code segment should you use?

A. IsolatedStorageFileStream^ isoStream;isoStream = gcnew IsolatedStorageFileStream(

“Settings.dat”, FileMode::Open); String^ result = (gcnew StreamReader(isoStream))-

>ReadToEnd();

B. IsolatedStorageFile^ isoFile;

isoFile = IsolatedStorageFile::GetMachineStoreForAssembly();

IsolatedStorageFileStream^ isoStream;isoStream = gcnew IsolatedStorageFileStream(

“Settings.dat”, FileMode::Open, isoFile); String^ result = (gcnew StreamReader(isoStream))-

>ReadToEnd();

C. IsolatedStorageFileStream^ isoStream;isoStream = gcnew IsolatedStorageFileStream(

“Settings.dat”, FileMode::Open);String^ result = isoStream->ToString();

D. IsolatedStorageFile^ isoFile;isoFile = IsolatedStorageFile::GetMachineStoreForAssemblly();

IsolatedStorageFileStream^ isoStream;isoStream = gcnew IsolatedStorageFileStream(

“Settings.dat”, FileMode::Open, isoFile); String^ result = isoStream->ToString();

Answer: B

Question: 65

You are developing a fiscal report for a customer. Your customer has a main office in the United States and a satellite office in Mexico. You need to ensure that when users in the satellite office generate the report, the current date is displayed in Mexican Spanish format. Which code segment should you use?

A. Dim DTFormat As DateTimeFormatInfo = _

New CultureInfo("es-MX", False).DateTimeFormat

Dim DT As New DateTime( _

DateTime.Today.Year, DateTime.Today.Month, DateTime.Today.Day)Dim strDate As

String = _

DT.ToString(DTFormat.LongDatePattern)

B. Dim objCalendar As Calendar = _

New CultureInfo("es-MX", False).CalendarDim DT As New DateTime( _

DateTime.Today.Year, DateTime.Today.Month, DateTime.Today.Day)Dim strDate As

String = DT.ToString

C. Dim strDate As String = _

DateTimeFormatInfo.CurrentInfo.GetMonthName( _

DateTime.Today.Month)

D. Dim strDate As String = _

DateTime.Today.Month.ToString("es-MX")

Answer: A

K8 - DateTimeFormat

Question: 66

You are defining a class named CompanyClass that contains several child objects. CompanyClass contains a method named ProcessChildren that performs actions on the child objects. CompanyClass objects will be serializable. You need to ensure that the ProcessChildren method is executed after the CompanyClass object and all its child objects are reconstructed. Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A. Apply the OnDeserializing attribute to the ProcessChildren method.

B. Specify that CompanyClass implements the IDeserializationCallback interface.

C. Specify that CompanyClass inherits from the ObjectManager class.

D. Apply the OnSerialized attribute to the ProcessChildren method.

E. Create a GetObjectData method that calls ProcessChildren.

F. Create an OnDeserialization method that calls ProcessChildren.

Answer: B, F

K8 – Key words in question ‘executed after the class object’ OnDeserialization & IDeserializationCallback

Question: 67

You need to create a method to clear a Queue named q. Which code segment should you use?

A. for each (Object^ e in q) {

q.Dequeue();}

B. for each (Object^ e in q) {

q.Enqueue(0);}

C. q.Clear();

D. q.Dequeue();

Answer: C

K8 – I think 87 year old Granny could get this one right

Question: 71

You need to create a method to clear a Queue named q. Which code segment should you use?

A. Dim e As ObjectFor Each e In qq.Dequeue()Next

B. Dim e As ObjectFor Each e In qq.Enqueue(Nothing)Next

C. q.Clear()

D. q.Dequeue()

Answer: C

Question: 68

A. bytesTransferred = stream1->Read(byteArray, 0, 80);

B. for(int i = 0; i < 80; i++){

stream1->WriteByte(byteArray[i]);

bytesTransferred = i;

if (!stream1->CanWrite) {

break;

}}

C. while (bytesTransferred < 80) {

stream1->Seek(1, SeekOrigin::Current);

byteArray[bytesTransferred++] =

Convert::ToByte(stream1->ReadByte());}

D. stream1->Write(byteArray, 0, 80);bytesTransferred = byteArray->Length;

Answer: A

K8 – Read(byteArray, 0, 80); is the syntax

Question: 69

You are developing an application that dynamically loads assemblies from an application directory. You need to write a code segment that loads an assembly named Company1.dll into the current application domain. Which code segment should you use?

A. AppDomain domain = AppDomain.CurrentDomain;
string myPath = Path.Combine(domain.BaseDirectory,

“Company1.dll”);
Assembly asm = Assembly.LoadFrom(myPath);

B. AppDomain domain = AppDomain.CurrentDomain;
string myPath =

Path.Combine(domain.BaseDirectory, “Company1.dll”);
Assembly asm = Assembly.Load(myPath);

C. AppDomain domain = AppDomain.CurrentDomain;string myPath =

Path.Combine(domain.DynamicDirectory, “Company1.dll”);Assembly asm =

AppDomain.CurrentDomain.Load(myPath);

D. AppDomain domain = AppDomain.CurrentDomain;Assembly asm =

domain.GetData(“Company1.dll”);

Answer: A

K8 – Load From is important in this question

Question: 70

You are developing an application that will use custom authentication and role-based security. You need to write a code segment to make the runtime assign an unauthenticated principal object to each running thread. Which code segment should you use?

A. Dim objDomain As AppDomain =

AppDomain.CurrentDomainobjDomain.SetPrincipalPolicy( _

PrincipalPolicy.WindowsPrincipal)

B. Dim objDomain As AppDomain =

AppDomain.CurrentDomainobjDomain.SetThreadPrincipal(New

WindowsPrincipal(Nothing))

C. Dim objDomain As AppDomain =

AppDomain.CurrentDomainobjDomain.SetAppDomainPolicy( _

PolicyLevel.CreateAppDomainLevel())

D. Dim objDomain As AppDomain =

AppDomain.CurrentDomainobjDomain.SetPrincipalPolicy( _

PrincipalPolicy.UnauthenticatedPrincipal)

Answer: D

K8 – (PrincipalPolicy.UnauthenticatedPrincipal)

Question: 72

You develop a service application that needs to be deployed. Your network administrator creates a specific user account for your service application. You need to configure your service application to run in the context of this specific user account. What should you do?

A. Prior to installation, set the StartType property of the ServiceInstaller class.

B. Prior to installation, set the Account, Username, and Password properties of the ServiceProcessInstaller class.

C. Use the CONFIG option of the net.exe command-line tool to install the service.

D. Use the installutil.exe command-line tool to install the service.

Answer: B

K8 – ServiceProcessInstaller class when run app as user

Question: 73

You need to create a class definition that is interoperable along with COM. You need to ensure that COM applications can create instances of the class and can call the GetAddress method. Which code segment should you use?

A. Public Class Customer
Private m_AddressString As String
Public Sub New(ByVal Address As String)
m_AddressString = Address
End Sub

Public Function GetAddress() As String
Return m_AddressString
End FunctionEnd Class

B. Public Class Customer
Shared m_AddressString As String
Public Sub New()
End Sub
Public Shared Function GetAddress() As String
Return m_AddressString
End FunctionEnd Class

C. Public Class Customer
Private m_AddressString As String
Public Sub New()
End Sub
Public Function GetAddress() As String
Return m_AddressString
End FunctionEnd Class

D. Public Class Customer
Private m_AddressString As String
Public Sub New()
End Sub
Private Function GetAddress() As String
Return m_AddressString
End FunctionEnd Class

Answer: C

K8 – GetAddress should be Public

Question: 74

You are creating a new security policy for an application domain. You write the following lines of code.
Dim objPolicy As PolicyLevel = PolicyLevel.CreateAppDomainLevelDim

noTrustStatement As New PolicyStatement( _

objPolicy.GetNamedPermissionSet("Nothing"))

Dim fullTrustStatement As New PolicyStatement( _

objPolicy.GetNamedPermissionSet("FullTrust"))

You need to arrange code groups for the policy so that loaded assemblies default to the Nothing permission set. If the assembly originates from a trusted zone, the security policy must grant the assembly the FullTrust permission set. Which code segment should you use?

A. Dim objGroup1 As CodeGroup = New FirstMatchCodeGroup(
_ New ZoneMembershipCondition(SecurityZone.Trusted), _

fullTrustStatement)
Dim objGroup2 As CodeGroup = New UnionCodeGroup( _

New AllMembershipCondition, noTrustStatement)

B. Dim objGroup1 As CodeGroup = New FirstMatchCodeGroup( _ New AllMembershipCondition, noTrustStatement)
Dim objGroup2 As CodeGroup = New UnionCodeGroup( _

New ZoneMembershipCondition(SecurityZone.Trusted), _
fullTrustStatement)

C. Dim objGroup As CodeGroup = New UnionCodeGroup( _
New ZoneMembershipCondition(SecurityZone.Trusted), _
fullTrustStatement)

D. Dim objGroup As CodeGroup = New FirstMatchCodeGroup( _
New ZoneMembershipCondition(SecurityZone.Trusted), _
fullTrustStatement)

Answer: B

K8 – AllMembershipCondition & SecurityZone.Trusted

Question: 75

You are loading a new assembly into an application. You need to override the default evidence for the assembly. You require the common language runtime (CLR) to grant the assembly a

permission set, as if the assembly were loaded from the local intranet zone. You need to build the evidence collection. Which code segment should you use?

A. Evidence^ evidence = gcnew

Evidence(Assembly::GetExecutingAssembly()->Evidence);

B. Evidence^ evidence = gcnew Evidence();
evidence->AddAssembly(gcnew Zone(SecurityZone::Intranet));

C. Evidence^ evidence = gcnew Evidence();
evidence->AddHost(gcnew Zone(SecurityZone::Intranet));

D. Evidence^ evidence = gcnew Evidence(AppDomain::CurrentDomain->Evidence);

Answer: C

K8 – Question states internet security zone SecurityZone::Intranet

Question: 76

You need to read the entire contents of a file named Message.txt into a single string variable. Which code segment should you use?

A. string result = null;StreamReader reader = new StreamReader(“Message.txt”);result =

reader.Read().ToString();

B. string result = null;
StreamReader reader = new StreamReader(“Message.txt”);
result = reader.ReadToEnd();

C. string result = string.Empty;StreamReader reader = new StreamReader(“Message.txt”);
while

(!reader.EndOfStream) {

result += reader.ToString();}

D. string result = null;StreamReader reader = new StreamReader(“Message.txt”);result =

reader.ReadLine();

Answer: B

K8 – ReadToEnd works to read the entire file. Toss D out readline won’t get entire file

Question: 77

You need to generate a report that lists language codes and region codes. Which code segment should you use?

A. For Each objCulture As CultureInfo In

_CultureInfo.GetCultures(CultureTypes .SpecificCultures)

...Next

B. Dim objCulture As New CultureInfo("")Dim objTypes As CultureTypes = objCulture.CultureTypes ...

C. For Each objCulture As CultureInfo In

_CultureInfo.GetCultures(CultureTypes.NeutralCultures)

...Next

D. For Each objCulture As CultureInfo In

_CultureInfo.GetCultures(CultureTypes.ReplacementCultures)

...Next

Answer: A

K8 – SpecificCultures is needed & loop till we get them all.

Question: 78

You are developing a class library that will open the network socket connections to computers on the network. You will deploy the class library to the global assembly cache and grant it full trust. You write the following code to ensure usage of the socket connections.

Dim objPermission As SocketPermission = New

_SocketPermission(System.Security.Permissions.PermissionState.Unrestricted)objPermission.As

sert()

Some of the applications that use the class library might not have the necessary

permissions to open the network socket connections.

You need to cancel the assertion.

Which code segment should you use?

A. CodeAccessPermission.RevertAssert()

B. CodeAccessPermission.RevertDeny()

C. objPermission.Deny()

D. objPermission.PermitOnly()

Answer: A

K8 – Cancel the assertion – doesn’t RevertAssert() fit like a glove?

Question: 79

You are writing an application that uses SOAP to exchange data with other applications. You use a Department class that inherits from ArrayList to send objects to another application.
The Department object is named dept. You need to ensure that the application serializes the Department object for transport by using SOAP. Which code should you use?

A. Dim formatter As New SoapFormatter()Dim buffer As Byte() = New

Byte(dept.Capacity) {}Dim myStream As New MemoryStream(buffer) Dim o As

ObjectFor Each o In dept

formatter.Serialize(myStream, o)Next

B. Dim formatter As New SoapFormatter()
Dim buffer As Byte() = New Byte(dept.Capacity)Dim myStream As New

MemoryStream(buffer)formatter.Serialize(myStream, dept)

C. Dim formatter As New SoapFormatter()Dim myStream As New MemoryStream()Dim

o as ObjectFor Each o In dept

formatter.Serialize(myStream, o)Next

D. Dim formatter As New SoapFormatter()
Dim myStream As New

MemoryStream()formatter.Serialize(myStream, dept)

Answer: D

K8 – for the serialize the object name dept is needed.

70-536 MCTS .NET Sample Questions #23

noreply@blogger.com (Catto) — Sun, 23 Aug 2009 17:34:00 +0000

Hey Now,

This content below is from some practice questions from the internet. I’ve also added some of my notes to these so any line starting with K8 (my nickname, first syllable of Catt o ) are my comments.

Thx,

Catto

Q#51 – Q#59

Question: 51

You need to create a dynamic assembly named MyAssembly. You also need to save the assembly to disk. Which code segment should you use?

A. AssemblyName myAssemblyName =

new AssemblyName();myAssemblyName.Name = “MyAssembly”;AssemblyBuilder

myAssemblyBuilder =

AppDomain.CurrentDomain.DefineDynamicAssembly

(myAssemblyName,

AssemblyBuilderAccess.Run);myAssemblyBuilder.Save(“MyAssembly.dll”);

B. AssemblyName myAssemblyName =

new AssemblyName();myAssemblyName.Name = “MyAssembly”;AssemblyBuilder

myAssemblyBuilder =

AppDomain.CurrentDomain.DefineDynamicAssembly

(myAssemblyName,

AssemblyBulderAccess.Save);myAssemblyBuilder.Save(“MyAssembly.dll”);

C. AssemblyName myAssemblyName =

new AssemblyName();AssemblyBuilder myAssemblyBuilder =

AppDomain.CurrentDomain.DefineDynamicAssembly

(myAssemblyName,

AssemblyBuilderAccess.RunAndSave);myAssemblyBuilder.Save(“MyAssembly.dll”);

D. AssemblyName myAssemblyName =

new AssemblyName(“MyAssembly”);AssemblyBuilder myAssemblyBuilder =

AppDomain.CurrentDomain.DefineDynamicAssembly

(myAssemblyName,

AssemblyBuilderAccess.Save);myAs semblyBuilder.Save(“c:\\MyAssembly.dll”);

Answer: B

K8 - myAssemblyBuilder.Save is needed

Question: 52

You need to call an unmanaged function from your managed code by using platform invoke services. What should you do?

A. Create a class to hold DLL functions and then create prototype methods by using managed code.

B. Register your assembly by using COM and then reference your managed code from COM.

C. Export a type library for your managed code.

D. Import a type library as an assembly and then create instances of COM object.

Answer: A

K8 – Create a class, in the question pinvoke is stated so DLL is in answer.

Question: 53

You are developing a class library that will open the network socket connections to computers on the network. You will deploy the class library to the Global Assembly Cache and grant it full trust. You write the following code to ensure usage of the socket connections.

SocketPermission^ permission =

gcnew SocketPermission(PermissionState::Unrestricted);permission->Assert(); Some of the

applications that use the class library might not have the necessary permissions to open the

network socket connections.

You need to cancel the assertion. Which code segment should you use?

A. CodeAccessPermission::RevertAssert();

B. CodeAccessPermission::RevertDeny();

C. permission->Deny();

D. permission->PermitOnly();

Answer: A

K8 - CodeAccessPermission & ReverAssert()

Question: 54

You need to identify a type that meets the following criteria:

Is always a number.

Is not greater than 65,535. Which type should you choose?

A. System.UInt16

B. int

C. System.String

D. System.IntPtr

Answer: A

K8 - UInt16 is the type that meets the required.

Question: 55

You are writing code for user authentication and authorization. The username, password, and roles are stored in your application data store. You need to establish a user security context that will be used for authorization checks such as IsInRole. You write the following code segment to authorize the user.

if (!TestPassword(userName, password))

throw new Exception(“could not authenticate user”);String[] userRolesArray =

LookupUserRoles(userName);

You need to complete this code so that it establishes the user security context. Which code segment should you use?

A. GenericIdentity ident = new GenericIdentity(userName);

GenericPrincipal currentUser = new

GenericPrincipal(ident, userRolesArray);Thread.CurrentPrincipal = currentUser;

B. WindowsIdentity ident = new WindowsIdentity(userName);WindowsPrincipal currentUser =

new WindowsPrincipal(ident);Thread.CurrentPrincipal = currentUser;

C. NTAccount userNTName = new NTAccount(userName);GenericIdentity ident = new

GenericIdentity(userNTName.Value);GenericPrincipal currentUser= new

GenericPrincipal(ident, userRolesArray);Thread.CurrentPrincipal = currentUser;

D. IntPtr token = IntPtr.Zero;token = LogonUserUsingInterop(username,

encryptedPassword);WindowsImpersonationContext ctx =

WindowsIdentity.Impersonate(token);

Answer: A

K8 – GenericIdentity

Question: 56

You are developing an application for a client residing in Hong Kong. You need to display negative currency values by using a minus sign. Which code segment should you use?

A. NumberFormatInfo culture = new CultureInfo(“zh-HK”).NumberFormat;

culture.NumberNegativePattern = 1; return numberToPrint.ToString(“C”, culture);

B. NumberFormatInfo culture = new CultureInfo(“zh-HK”).NumberFormat;

culture.CurrencyNegativePattern = 1; return numberToPrint.ToString(“C”, culture);

C. CultureInfo culture = new CultureInfo(“zh-HK”);return numberToPrint.ToString(“-(0)”, culture);

D. CultureInfo culture = new CultureInfo(“zh-HK”); return numberToPrint.ToString(“()”, culture);

Answer: B

K8 – Cultureinfo & CurrencyNegativePattern

Question: 57

You are developing an application that will perform mathematical calculations. You need to ensure that the application is able to perform multiple calculations simultaneously.

What should you do?

A. Set the IdealProcessor property of the ProcessThread object.

B. Set the ProcessorAffinity property of the ProcessThread object.

C. For each calculation, call the QueueUserWorkItem method of the ThreadPool class.

D. Set the Process.GetCurrentProcess().BasePriority property to High.

Answer: C

K8 – QueueUserWorkItem of Thead pool for multiple simultaneous Calculations.

Question: 58

ref class PollingService : public ServiceBase {

public :

static bool blnExit = false;

protected :

override void OnStart(String^ args) {

do {

DoWork();

} while (!blnExit);

}

override void OnStop() {

blnExit = true;

}

private :

void DoWork() {} };

When you attempt to start the service, you receive the following error message: Could not start the PollingService service on the local computer. Error 1053: The service did not respond to the start or control request in a timely fashion. You need to modify the service application code so that the service starts properly. What should you do?

A. Move the loop code into the constructor of the service class from the OnStart method.

B. Drag a timer component onto the design surface of the service. Move the calls to the long-running procedure from the OnStart method into the Tick event procedure of the timer, set the Enabled property of the timer to True, and call the Start method of the timer in the OnStart method.

C. Add a class-level System.Timers.Timer variable to the service class code. Move the call to the DoWork method into the Elapsed event procedure of the timer, set the Enabled property of the timer to True, and call the Start method of the timer in the OnStart method.

D. Move the loop code from the OnStart method into the DoWork method.

Answer: C

K8 – System.Timers.Timer var & set enabled property to true & call start method.

Question: 59

You are creating an assembly named Company1. Company1 contains a public method. The global cache contains a second assembly named Company2. You must ensure that the public method is only called from Company2. Which permission class should you use?

A. GacIdentityPermission

B. PublisherIdentityPermission

C. DataProtectionPermission

D. StrongNameIdentityPermission

Answer: D

K8 – Good Old StrongNameIdentityPermission class

70-536 MCTS .NET Sample Questions #22

noreply@blogger.com (Catto) — Sun, 23 Aug 2009 02:14:00 +0000

Hey Now,

Thx,

Catto

Q#33 – Q#50

Question: 33

You are developing an application that receives events asynchronously. You create a WqlEventQuery instance to specify the events and event conditions to which the application must respond. You also create a ManagementEventWatcher instance to subscribe to events matching the query. You need to identify the other actions you must perform before the application can receive events asynchronously. Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A. Start listening for events by calling the Start method of the ManagementEventWatcher.

B. Set up a listener for events by using the EventArrived event of the ManagementEventWatcher.

C. Use the WaitForNextEvent method of the ManagementEventWatcher to wait for the events.

D. Create an event handler class that has a method that receives an ObjectReadyEventArgs

parameter.

E. Set up a listener for events by using the Stopped event of the ManagementEventWatcher.

Answer: A, B

K8 – Start & EventArrived of ManagementEventWatcher

Question: 34

You need to write a code segment that transfers the contents of a byte array named dataToSend by using a NetworkStream object named netStream. You need to use a cache of size 8,192

bytes. Which code segment should you use?

A. MemoryStream^ memStream = gcnew

MemoryStream(8192);memStream->Write(dataToSend, 0, (int) netStream->Length);

B. MemoryStream^ memStream = gcnew

MemoryStream(8192);netStream->Write(dataToSend, 0, (int) memStream->Length);

C. BufferedStream^ bufStream =

gcnew BufferedStream(netStream, 8192);bufStream->Write(dataToSend, 0, dataToSend- >Length);

D. BufferedStream^ bufStream =

gcnew BufferedStream(netStream);bufStream->Write(dataToSend, 0, 8192);

Answer: C

K8 – BufferedStream not Memory Stream C is correct Syntax

Question: 35

You are writing a method to compress an array of bytes. The array is passed to the method in a parameter named document. You need to compress the incoming array of bytes and return the result as an array of bytes. Which code segment should you use?

A. MemoryStream strm = new MemoryStream(document);

B. DeflateStream deflate = new DeflateStream(strm,

CompressionMode.Compress); byte[] result = new byte[document.Length];deflate.Write(result,

0, result.Length); return result;

B. MemoryStream strm = new MemoryStream(document);

DeflateStream deflate = new

DeflateStream(strm,

CompressionMode.Comress);deflate.Write(docemtn, 0,

document.Length);deflate.Close();return strm.ToArray();

C. MemoryStream strm = new MemoryStream();

DeflateStream deflate = new

DeflateStream(strm, CompressionMode.Compress);deflate.Write(decument, 0,

decument.Length);deflate.Close();return strm.ToArray();

D. MemoryStream inStream = new MemoryStream(document);

DeflateStream deflate =

new DeflateStream(inStream, CompressionMode.Compress); MemoryStream outStream =

new MemoryStream();int b;while ((b = deflate.ReadByte()) ! = -1) {

outStream.WriteByte((byte)b);} return outStream.ToArray();

Answer: C

K8 - MemoryStream();

Question: 36

You need to select a class that is optimized for key-based item retrieval from both small and large collections. Which class should you choose?

A. OrderedDictionary class

B. HybridDictionary class

C. ListDictionary class

D. Hashtable class

Answer: B

K8 – Key Based Items Large & small collections HybridDictionary Class.

Question: 37

You are writing an application that uses SOAP to exchange data with other applications. You use a Department class that inherits from ArrayList to send objects to another application.

The Department object is named dept. You need to ensure that the application serializes the Department object for transport by using SOAP. Which code should you use?

A. SoapFormatter formatter = new SoapFormatter();byte[] buffer = new

byte[dept.Capacity];MemoryStream stream = new MemoryStream(buffer);

foreach

(object o in dept) {

formatter.Serialize(stream, o);}

B. SoapFormatter formatter = new SoapFormatter();byte[] buffer = new

byte[dept.Capacity];MemoryStream stream = new MemoryStream(buffer);

formatter.Serialize(stream, dept);

C. SoapFormatter formatter = new SoapFormatter();MemoryStream stream = new

MemoryStream();

foreach (object o in dept) {

Formatter.Serialize(stream, o);}

D. SoapFormatter formatter = new SoapFormatter();

MemoryStream stream = new

MemoryStream(); formatter.Serialize(stream, dept);

Answer: D

K8 Need MemorySteam & dept / class name in the Serialize parameters.

Question: 38

You create a class library that contains the class hierarchy defined in the following code segment. (Line numbers are included for reference only.)

01. public ref class Employee {

02.03. public : 04.

String^ Name;05. };06.07. public ref class Manager : public Employee {08.09.

public :10.

int Level;11. };12.13. public ref class Group {

14.15. public : 16. array<Employee^>^

Employees;17. };

You create an instance of the Group class. You populate the fields of the instance. When you attempt to serialize the instance by using the Serialize method of the XmlSerializer class, you receive InvalidOperationException. You also receive the following error message: "There was an error generating the XML document." You need to modify the code segment so that you can successfully serialize instances of the Group class by using the XmlSerializer class. You also need to ensure that the XML output contains an element for all public fields in the class hierarchy. What should you do?

A. Insert the following code between lines 14 and 15 of the code segment:

[XmlArrayItem(Type = __typeof(Employee))]

[XmlArrayItem(Type = __typeof(Manager))]

B. Insert the following code between lines 14 and 15 of the code segment:

[XmlElement(Type = __typeof(Employees))]

C. Insert the following code between lines 14 and 15 of the code segment:

[XmlArray(ElementName="Employees")]

D. Insert the following code between lines 3 and 4 of the code segment:

[XmlElement(Type = __typeof(Employee))]

andInsert the following code segment between lines 8 and 9 of the code segment:

[XmlElement(Type = __typeof(Manager))]

Answer: A

K8 XmlArrayItem

Question: 39

You need to write a code segment that performs the following tasks:

Retrieves the name of each paused service.

Passes the name to the Add method of Collection1. Which code segment should you use?

A. Dim searcher As ManagementObjectSearcher = _New ManagementObjectSearcher( _

"Select * from Win32_Service where State = 'Paused'")For Each svc As

ManagementObject In searcher.Get()

Collection1.Add(svc("DisplayName"))Next

B. Dim searcher As ManagementObjectSearcher = _New ManagementObjectSearcher ( _

"Select * from Win32_Service", "State = 'Paused'")For Each svc As ManagementObject

In searcher.Get()

Collection1.Add(svc("DisplayName"))Next

C. Dim searcher As ManagementObjectSearcher = _ New ManagementObjectSearcher( _

"Select * from Win32_Service")For Each svc As ManagementObject In searcher.Get()

If svc("State").ToString() = "'Paused'" Then

Collection1.Add(svc("DisplayName"))

End IfNext

D. Dim searcher As New ManagementObjectSearcher()searcher.Scope = New

ManagementScope("Win32_Service")For Each svc As ManagementObject In

searcher.Get()

If svc("State").ToString() = "Paused" Then

Collection1.Add(svc("DisplayName"))

End IfNext

Answer: A

K8 need the where clause to select all the ‘paused’

Question: 40

You are writing a method that accepts a string parameter named message. Your method must break the message parameter into individual lines of text and pass each line to a second method named Process. Which code segment should you use?

A. Dim reader As New

StringReader(message)ProcessMessage(reader.ReadToEnd())reader.Close()

B. Dim reader As New StringReader(message)

While reader.Peek() <> -1

Dim line as String = reader.Read().ToString()

ProcessMessage(line)End Whilereader.Close()

C. Dim reader As New

StringReader(message)ProcessMessage(reader.ToString())reader.Close()

D. Dim reader As New StringReader(message)While reader.Peek() <> -1

ProcessMessage(reader.ReadLine())End Whilereader.Close()

Answer: D

K8 – Need the reader.Peek to find the blank space to break & reader.ReadLine() Looks like A & C can be tossed out.

Question: 41

You need to create a class definition that is interoperable along with COM. You need to ensure that COM applications can create instances of the class and can call the GetAddress method. Which code segment should you use?

A. public class Customer {

string addressString;

public Customer(string address) { addressString = address; }

public string GetAddress() { return addressString; }}

B. public class Customer {

static string addressString;

public Customer() { }

public static string GetAddress() { return addressString; }}

C. public class Customer {

string addressString;

public Customer() { }

public string GetAddress() { return addressString; }}

D. public class Customer {

string addressString;

public Customer() { }

internal string GetAddress() { return addressString; }}

Answer: C

K8 – B can be tossed out with static String adressString; D can be out with the syntax internal string

Question: 42

You are creating a class that performs complex financial calculations. The class contains a method named GetCurrentRate that retrieves the current interest rate and a variable named currRate that stores the current interest rate. You write serialized representations of the class. You need to write a code segment that updates the currRate variable with the current interest rate when an instance of the class is deserialized. Which code segment should you use?

A. [OnSerializing]void UpdateValue (StreamingContext^ context) {

currRate = GetCurrentRate();}

B. [OnSerializing]void UpdateValue(SerializationInfo^ info) {

info->AddValue(“currentRate”, GetCurrentRate());}

C. [OnDeserializing]void UpdateValue(SerializationInfo^ info) {

info->AddValue(“currentRate”, GetCurrentRate());}

D. [OnDeserialized]void UpdateValue(StreamingContext^ context) { currRate = GetCurrentRate();}

Answer: D

K8 – in question states when an instance of the class is deserialized. Therefore we use OnDeserialized.

Question: 43

You are developing a class library. Portions of your code need to access system environment variables. You need to force a runtime SecurityException only when callers that are higher in the call stack do not have the necessary permissions. Which call method should you use?

A. set.Demand();

B. set.Assert();

C. set.PermitOnly();

D. set.Deny();

Answer: A

K8 Demand first thought was deny

Question: 44

You are developing a fiscal report for a customer. Your customer has a main office in the United States and a satellite office in Mexico. You need to ensure that when users in the satellite office generate the report, the current date is displayed in Mexican Spanish format. Which code segment should you use?

A. CultureInfo^ culture = gcnew CultureInfo(“es-MX”, false);DateTimeFormatInfo^ dtfi = culture-

>DateTimeFormat;DateTime^ dt = gcnew DateTime(DateTime::Today::Year,

DateTime::Today::Month, DateTime::Today::Day);String^ dateString = dt->ToString(dtfi-

>LongDatePattern);

B. Calendar^ cal = gcnew CultureInfo(“es-MX”, false)::Calendar; DateTime^dt = gcnew

DateTime(DateTime::Today::Year, DateTime::Today::Month, DateTime::Today::Day);

String^dateString = dt-> ToString();

C. String^ dateString =

DateTimeFormatInfo::CurrentInfo::GetMonthName(DateTime::Today::Month);

D. String^ dateString = DateTime::Today::Month::ToString(“es-MX”);

Answer: A

K8 – need cultureinfo right

Question: 45

You create an application that stores information about your customers who reside in various regions. You are developing internal utilities for this application. You need to gather regional information about your customers in Canada. Which code segment should you use?

A. for each (CultureInfo^ culture in

CultureInfo::GetCultures(CultureTypes::SpecificCultures)) {

// Output the region information...}

B. CultureInfo^ cultureInfo = gcnew CultureInfo(“CA”);

// Output the region information...

C. RegionInfo^ regionInfo = gcnew RegionInfo(“CA

// Output the region information...

D. RegionInfo^ regionInfo = gcnew RegionInfo(“”);if(regionInfo->Name == “CA”){

// Output the region information...}

Answer: C

K8 Region is more specific & is needed for CA nada

Question: 46

You need to generate a report that lists language codes and region codes. Which code segment should you use?

A. for each (CultureInfo^ culture in

CultureInfo::GetCultures(CultureTypes::SpecificCultures)) {

// Output the culture information...}

B. CultureInfo^ culture = gcnew CultureInfo(“”); CultureTypes^ types = culture->CultureTypes;

// Output the culture information...

C. for each (CultureInfo^ culture in

CultureInfo::GetCultures(CultureTypes::NeutralCultures)) {

// Output the culture information...}

D. for each (CultureInfo^ culture in

CultureInfo::GetCultures(CultureTypes::ReplacementCultures)) {

// Output the culture information...}

Answer: A

K8 – just reading answers B can be tossed out since no loop; CultureTypes::SpecificCultures is needed

Question: 47

You are developing a method to hash data with the Secure Hash Algorithm. The data is passed to your method as a byte array named message. You need to compute the hash of the incoming parameter by using SHA1. You also need to place the result into a byte array named hash. Which code segment should you use?

A. SHA1 sha = new SHA1CryptoServiceProvider();byte[] hash =

null;sha.TransformBlock(message, 0, message.Length, hash, 0);

B. SHA1 sha = new SHA1CryptoServiceProvider();byte[] hash =

BitConverter.GetBytes(sha.GetHashCode());

C. SHA1 sha = new SHA1CryptoServiceProvider();byte[] hash = sha.ComputeHash(message);

D. SHA1 sha = new SHA1CryptoServiceProvider();sha.GetHashCode();byte[] hash = sha.Hash;

Answer: C

K8 - ComputeHash method

Question: 48

You are developing a method to hash data for later verification by using the MD5 algorithm. The data is passed to your method as a byte array named message. You need to compute the hash of the incoming parameter by using MD5. You also need to place the result into a byte array. Which code segment should you use?

A. HashAlgorithm algo = HashAlgorithm.Create(“MD5”);byte[] hash =

algo.ComputeHash(message);

B. HashAlgorithm algo = HashAlgorithm.Create(“MD5”);byte[] hash =

BitConverter.GetBytes(algo.GetHashCode());

C. HashAlgorithm algo;algo = HashAlgorithm.Create(message.ToString());byte[] hash =

algo.Hash;

D. HashAlgorithm algo = HashAlgorithm.Create(“MD5”);byte[] hash =

null;algo.TransformBlock(message, 0, message.Length, hash, 0);

Answer: A

K8 – SHA1 or MD5 the ComputeHash is need for the requirements asked in the question.

Question: 49

You create a method that runs by using the credentials of the end user. You need to use Microsoft Windows groups to authorize the user. You must add a code segment that identifies whether a user is in the local group named Clerk. Which code segment should you use?

A. Dim objUser As WindowsIdentity = WindowsIdentity.GetCurrentFor Each objGroup

As IdentityReference In objUser.Groups

Dim objNT As NTAccount = _

DirectCast(objGroup.Translate( _

Type.GetType("NTAccount")), NTAccount)

Dim blnAuth As Boolean = objNT.Value.Equals( _

Environment.MachineName & "\Clerk")

If blnAuth Then Exit ForNext

B. Dim objUser As WindowsPrincipal = _

DirectCast(Thread.CurrentPrincipal, WindowsPrincipal)Dim blnAuth As Boolean =

objUser.IsInRole("Clerk")

C. Dim objUser As GenericPrincipal = _

DirectCast(Thread.CurrentPrincipal, GenericPrincipal)Dim blnAuth As Boolean =

objUser.IsInRole("Clerk")

D. Dim objUser As WindowsPrincipal = _

DirectCast(Thread.CurrentPrincipal, WindowsPrincipal)Dim blnAuth As Boolean = _

objUser.IsInRole(Environment.MachineName)

Answer: B

K8 – IsInRole is needed & WindowsPrincipal

Question: 50

You write the following code to call a function from the Win32 Application Programming Interface (API) by using platform invoke. int rc = MessageBox(hWnd, text, caption, type); You need to define a method prototype. Which code segment should you use?

A. [DllImport("user32")]extern int MessageBox(int hWnd, String^ text, String^ caption, uint type);

B. [DllImport("user32")]extern int MessageBoxA(int hWnd, String^ text, String^ caption, uint type);

C. [DllImport("user32")]extern int Win32API_User32_MessageBox(

Int hWnd, String^ text, String^ caption, uint type);

D. [DllImport("C:\\WINDOWS\\system32\\user32.dll")]extern int MessageBox(int

hWnd, String^ text,

String^ caption, uint type);

Answer: A

K8 - int rc = MessageBox(hWnd, text, caption, type); in questions in key info.

70-536 MCTS .NET Question Samples #21

noreply@blogger.com (Catto) — Sun, 23 Aug 2009 00:44:00 +0000

Hey Now,

Thx,

Catto

Question: 13

You are developing an application for a client residing in Hong Kong. You need to display negative currency values by using a minus sign. Which code segment should you use?

A. Dim objCulture As NumberFormatInfo = _

New CultureInfo("zh-HK").NumberFormatobjCulture.NumberNegativePattern = 1

Return NumberToPrint.ToString("C", objCulture)

B. Dim objCulture As NumberFormatInfo = _

New CultureInfo("zh-HK").NumberFormatobjCulture.CurrencyNegativePattern =

1Return NumberToPrint.ToString("C", objCulture)

Exam Code: 70-536

C. Dim objCulture As NumberFormatInfo = _

New CultureInfo("zh-HK").NumberFormatReturn NumberToPrint.ToString("-{0}",

objCulture)

D. Dim objCulture As NumberFormatInfo = _

New CultureInfo("zh-HK").NumberFormatReturn NumberToPrint.ToString("()",

objCulture)

Answer: B

IF answer is B

NumberFormatobjCulture & CurrencyNegativePattern

for the code is important. Along with 1Return NumberToPrint.ToString("C", objCulture)

Question: 18

You are developing an application for a client residing in Hong Kong. You need to display negative currency values by using a minus sign. Which code segment should you use?

A. NumberFormatInfo^ culture =

gcnew CultureInfo(“zh-HK”)::NumberFormat; culture->NumberNegativePattern = 1;

return numberToPrint->ToString(“C”, culture);

Exam Code: 70-536

B. NumberFormatInfo^ culture =

gcnew CultureInfo(“zh-HK”)::NumberFormat; culture->CurrencyNegativePattern = 1;

return numberToPrint->ToString(“C”, culture);

C. CultureInfo^ culture =

gcnew CultureInfo(“zh-HK”); return numberToPrint->ToString(“-(0)”, culture);

D. CultureInfo^ culture =

gcnew CultureInfo(“zh-HK”); return numberToPrint->ToString(“()”, culture);

Answer: B

K8 – Same question as above but differes a little.

Question: 14

Your application uses two threads, named thread One and thread Two. You need to modify the code to prevent the execution of thread One until thread Two completes execution.

What should you do?

A. Configure threadOne to run at a lower priority.

B. Configure threadTwo to run at a higher priority.

C. Use a WaitCallback delegate to synchronize the threads.

D. Call the Sleep method of threadOne.

E. Call the SpinLock method of threadOne.

Answer: C

K8- Course – When I’m thinking theading WaitCallback will prevent execution for another thead to complete.

Question: 15

You are developing a method to hash data with the Secure Hash Algorithm. The data is passed to your method as a byte array named message. You need to compute the hash of the incoming parameter by using SHA1. You also need to place the result into a byte array named hash. Which code segment should you use?

A. Dim objSHA As New SHA1CryptoServiceProviderDim hash() As Byte =

NothingobjSHA.TransformBlock(message, 0, message.Length, hash, 0)

B. Dim objSHA As New SHA1CryptoServiceProviderDim hash() As Byte =

BitConverter.GetBytes(objSHA.GetHashCode)

C. Dim objSHA As New SHA1CryptoServiceProviderDim hash() As Byte =

objSHA.ComputeHash(message)

D. Dim objSHA As New SHA1CryptoServiceProviderobjSHA.GetHashCode()Dim

hash() As Byte = objSHA.Hash

Answer: C

K8 – SHA1 – use SHA1CryptoServiceProvider Dim also important for this question objSHA.ComputeHash(message)

Question: 19

You are developing a method to hash data with the Secure Hash Algorithm. The data is passed to your method as a byte array named message. You need to compute the hash of the incoming parameter by using SHA1. You also need to place the result into a byte array named hash. Which code segment should you use?

A. SHA1 ^sha = gcnew SHA1CryptoServiceProvider();array<Byte>^hash = nullptr;sha-

>TransformBlock(message, 0, message->Length, hash, 0);

B. SHA1 ^sha = gcnew SHA1CryptoServiceProvider();array<Byte>^hash =

BitConverter::GetBytes(sha->GetHashCode());

C. SHA1 ^sha = gcnew SHA1CryptoServiceProvider();array<Byte>^hash = sha-

>ComputeHash(message);

D. SHA1 ^sha = gcnew

SHA1CryptoServiceProvider();sha->GetHashCode();array<Byte>^hash = sha->Hash;

Answer: C

K8 – Important SHA1CryptoServiceProvider

Question: 16

You are writing a custom dictionary. The custom-dictionary class is named MyDictionary. You need to ensure that the dictionary is type safe. Which code segment should you use?

A. class MyDictionary : Dictionary<string, string>

B. class MyDictionary : HashTable

C. class MyDictionary : IDictionary

D. class MyDictionary { ... }

Dictionary<string, string> t = new Dictionary<string, string>();MyDictionary dictionary =

(MyDictionary)t;

Answer: A

K8 – Dictionary Type safe so Generics are good maybe? When reading this I didn’t think B could be the answer.

Question: 17

Exam Code: 70-536

You work as a developer at Company.com. You are creating an application that provides information about the local computer. The application contains a form that lists each logical drive

with the drive properties, such as type, volume label, and capacity. You are required to write a procedure that retrieves properties of each logical drive on the local computer.

What should you do?

Arrange the appropriate actions in the correct order.

Answer:

K8 – Hmm this didn’t display too well maybe revisit this question later.

Question: 20

You are writing an application that uses SOAP to exchange data with other applications. You use a Department class that inherits from ArrayList to send objects to another application.

The Department object is named dept. You need to ensure that the application serializes the Department object for transport by using SOAP. Which code should you use?

A. SoapFormatter^ formatter = gcnew SoapFormatter();array<Byte>^ buffer = gcnew

array<Byte>(dept->Capacity);MemoryStream^ stream = gcnew MemoryStream(buffer);

for each (Object^ o in dept) {

formatter->Serialize(stream, o);}

B. SoapFormatter^ formatter = gcnew SoapFormatter();array<Byte>^ buffer = gcnew

array<Byte>(dept->Capacity);MemoryStream^ stream = gcnew MemoryStream(buffer);

formatter->Serialize(stream, dept);

C. SoapFormatter^ formatter = gcnew SoapFormatter();MemoryStream^ stream = gcnew

MemoryStream();for each (Object^ o in dept) {

formatter->Serialize(stream, o);}

D. SoapFormatter^ formatter = gcnew SoapFormatter();MemoryStream^ stream = gcnew

MemoryStream();formatter->Serialize(stream, dept);

Answer: D

K8 - SoapFormatter();MemoryStream^ stream & formatter->Serialize(stream, dept);

Question: 21

You need to write a code segment that will create a common language runtime (CLR) unit of isolation within an application. Which code segment should you use?

A. Dim mySetup As AppDomainSetup = _

AppDomain.CurrentDomain.SetupInformationmySetup.ShadowCopyFiles = "true"

Exam Code: 70-536

B. Dim myProcess As System.Diagnostics.Process myProcess = New

System.Diagnostics.Process()

C. Dim domain As AppDomain domain =

AppDomain.CreateDomain("CompanyDomain")

D. Dim myComponent As System.ComponentModel.ComponentmyComponent = New

System.ComponentModel.Component()

Answer: C

K8 – Isolation in question & AppDomain in answer

Question: 22

You are testing a newly developed method named PersistToDB. This method accepts a parameter of type EventLogEntry. This method does not return a value. You need to create a code segment that helps you to test the method. The code segment must read entries from the application log of local computers and then pass the entries on to the PersistToDB method. The

code block must pass only events of type Error or Warning from the source MySource to the PersistToDB method. Which code segment should you use?

A. EventLog^ myLog = gcnew EventLog(“Application”, “.”);

for each (EventLogEntry^ entry in myLog->Entries) {

if (entry->Source == "MySource") {

PersistToDB(entry);

}}

B. EventLog^ myLog = gcnew EventLog(“Application”, “.”);

myLog->Source = “MySource”;

for each (EventLogEntry^ entry in myLog->Entries) {

if (entry->EntryType == (EventLogEntryType::Error &

EventLogEntryType::Warning)) {

PersistToDB(entry);}}

C. EventLog^ myLog = gcnew EventLog(“Application”, “.”);

for each (EventLogEntry^ entry in myLog->Entries) {

if (entry->Source == "MySource") {

if (entry->EntryType == EventLogEntryType::Error ||

entry->EntryType == EventLogEntryType::Warning) {

PersistToDB(entry);

}

}}

D. EventLog^ myLog = gcnew EventLog(“Application”, “.”);

myLog->Source = “MySource”;

for each (EventLogEntry^ entry in myLog->Entries) {

if (entry->EntryType == EventLogEntryType::Error ||

entry->EntryType == EventLogEntryType::Warning) {

PersistToDB(entry);

}}

Answer: C

K8 – Check if the it’s from the “source ” then warning or || Error.

Question: 23

You are developing an application that will use custom authentication and role-based security. You need to write a code segment to make the runtime assign an unauthenticated principal object to each running thread. Which code segment should you use?

A. AppDomain^ domain =

AppDomain::CurrentDomain;domain->

SetPrincipalPolicy(PrincipalPolicy::WindowsPrincipal);

B. AppDomain^ domain =

AppDomain::CurrentDomain;domain->SetThreadPrincipal(gcnew WindowsPrincipal(nullptr));

C. AppDomain^ domain =

AppDomain::CurrentDomain;domain-

>SetAppDomainPolicy(PolicyLevel::CreateAppDomainLevel());

D. AppDomain^ domain =

AppDomain::CurrentDomain;domain-

>SetPrincipalPolicy(PrincipalPolicy::UnauthenticatedPrincipal);

Answer: D

K8 SetPrincipalPolicy along with Unauth

Question: 24

You write the following code. public delegate

void FaxDocs(Object^ sender, FaxArgs^ args); You need to create an event that will invoke FaxDocs. Which code segment should you use?

A. public : static event FaxDocs^ Fax;

B. public : static event Fax^ FaxDocs;

C. public ref class FaxArgs : public EventArgs {

public :

String^ CoverPageInfo;

FaxArgs (String^ coverInfo) {

this->CoverPageInfo = coverInfo;

}};

D. public ref class FaxArgs : public EventArgs {

public :

String^ CoverPageInfo;};

Answer: A

K8 – Public : static event FaxDocs Fax;

Another answer would be I think Public : static event FaxDocs myFaxDocVariable;

Question: 28

You write the following code. public delegate void FaxDocs(object sender, FaxArgs args); You need to create an event that will invoke FaxDocs. Which code segment should you use?

A. pulic static event FaxDocs Fax;

B. public static event Fax FaxDocs;

C. public class FaxArgs : EventArgs {

private string coverPageInfo;

public FaxArgs(string coverInfo) {

this.coverPageInfo = coverPageInfo;

}

public string CoverPageInformation {

get {return this.coverPageInfo;}

}}

D. public class FaxArgs : EventArgs {

private string coverPageInfo;

public string CoverPageInformation {

get {return this.coverPageInfo;}

}}

Answer: A

K8 – Repeat?

Question: 25

You create an application to send a message by e-mail. An SMTP server is available on the local subnet. The SMTP server is named smtp.Company.com. To test the application, you use a source address, me@Company.com, and a target address,

you@Company.com. You need to transmit the e-mail message. Which code segment should you use?

A. MailAddress addrFrom =

new MailAddress(“me@Company.com”, “Me”);MailAddress addrTo =

new MailAddress(“you@Company.com”, “You”);MailMessage message = new

MailMessage(addrFrom, addrTo);message.Subject = “Greetings!”;message.Body =

“Test”;message.Dispose();

B. string strSmtpClient = “mstp.Company.com”;string strFrom = “me@Company.com”;string strTo

= “you@Company.com”;string strSubject = “Greetings!”;string strBody = “Test”;MailMessage

msg = new MailMessage(strFrom, strTo, strSubject, strSmtpClient);

C. MailAddress addrFrom = new MailAddress(“me@Company.com”);MailAddress addrTo = new

MailAddress(“you@Company.com”);MailMessage message = new MailMessage(addrFrom,

addrTo);message.Subject = “Greetings!”;message.Body = “Test”;SmtpClient client = new

SmtpClient(“smtp.Company.com”);client.Send(message);

D. MailAddress addrFrom =

new MailAddress(“me@Company.com”, “Me”);MailAddress addrTo = new

MailAddress(“you@Company.com”, “You”);MailMessage message = new

MailMessage(addrFrom, addrTo);message.Subject = “Greetings!”;message.Body =

“Test”;SocketInformation info = new SocketInformation();Socket client = new

Socket(info);System.Text.ASCIIEncoding enc = new System.Text.ASCIIEncoding();byte[]

msgBytes = enc.GetBytes(message.ToString());client.Send(msgBytes);

Exam Code: 70-536

Answer: C

K8 - SmtpClient( after the MailAddress addForm

Question: 26

You are developing a custom-collection class. You need to create a method in your class. You need to ensure that the method you create in your class returns a type that is compatible with the Foreach statement. Which criterion should the method meet?

A. The method must return a type of either IEnumerator or IEnumerable.

B. The method must return a type of IComparable.

C. The method must explicitly contain a collection.

D. The method must be the only iterator in the class.

Answer: A

K8 – IEnum since For loops need to count

Question: 27

You are developing an application to perform mathematical calculations. You develop a class named CalculationValues. You write a procedure named PerformCalculation that operates on an instance of the class. You need to ensure that the user interface of the application continues to respond while calculations are being performed. You need to write a code segment that calls the PerformCalculation procedure to achieve this goal. Which code segment should you use?

A. private void PerformCalculation() {...} private void DoWork(){

Calculation Values myValues = new Calculation Values();

Thread newThread = new Thread(

new ThreadStart(PerformCalculation));

new Thread.Start(myValues);}

B. private void PerformCalculation() {...} private void DoWork(){

Calculation Values myValues = new Calculation Values();

ThreadStart delStart = new

ThreadStart(PerformCalculation);

Thread newThread = new Thread(delStart);if (newThread.IsAlive)

{newThread.Start(myValues);}}

C. private void PerformCalculation (CalculationValues values) {...} private void

DoWork(){

Calculation Values myValues = new Calculation Values();

Application.DoEvents();

PerformCalculation(myValues);

Application.DoEvents();}

D. private void PerformCalculation(object values) {...} private void DoWork(){

Calculation Values myValues = new Calculation Values();

Thread newThread = new Thread(

new ParameterizedThreadStart(PerformCalculation));

newThread.Start(myValues);}

Answer: D

K8 - Call the procedure & use ParameterizedThreadStart

Question: 29

You are developing a custom event handler to automatically print all open documents. The event handler helps specify the number of copies to be printed. You need to develop a custom event arguments class to pass as a parameter to the event handler. Which code segment should you use?

A. Public Class PrintingArgs

Private _copies As Integer

Public Sub New(ByVal numberOfCopies As Integer)

Me._copies = numberOfCopies

End Sub

Public ReadOnly Property Copies() As Integer

Get

Return Me._copies

End Get

End PropertyEnd Class

B. Public Class PrintingArgs

Inherits EventArgs

Private _copies As Integer

Public Sub New(ByVal numberOfCopies As Integer)

Me._copies = numberOfCopies

End Sub

Public ReadOnly Property Copies() As Integer

Get

Return Me._copies

End Get

End PropertyEnd Class

C. Public Class PrintingArgs

Private eventArgs As EventArgs

Public Sub New(ByVal args As EventArgs)

Me.eventArgs = args

End Sub

Public ReadOnly Property Args() As EventArgs

Get

Return eventArgs

End Get

End PropertyEnd Class

D. Public Class PrintingArgs

Inherits EventArgs

Private copies As IntegerEnd Class

Answer: B

K8 - Inherits EventArgs

Question: 30

You write the following code segment to call a function from the Win32 Application Programming Interface (API) by using platform invoke. string personName = “N?el”;string msg = “Welcome” + personName + “to club”!”;bool rc =

User32API.MessageBox(0, msg, personName, 0); You need to define a method prototype that can best marshal the string data. Which code segment should you use?

A. [DllImport("user32", CharSet = CharSet.Ansi)]public static extern bool

MessageBox(int hWnd,

String text,

String caption,

uint type);}

B. [DllImport("user32", EntryPoint = "MessageBoxA", CharSet = CharSet.Ansi)]public

static extern bool MessageBox(int hWnd,

[MarshalAs(UnmanagedType.LPWStr)]String text,

[MarshalAs(UnmanagedType.LPWStr)]String caption,

uint type);}

C. [DllImport("user32", CharSet = CharSet.Unicode)]public static extern bool

MessageBox(int hWnd,

String text,

String caption,

uint type);}

D. [DllImport("user32", EntryPoint = "MessageBoxA", CharSet =

CharSet.Unicode)]public static extern bool MessageBox(int hWnd,

[MarshalAs(UnmanagedType.LPWStr)]String text,

[MarshalAs(UnmanagedType.LPWStr)]String caption,

uint type);}

Answer: C

K8 - CharSet.Unicode not asci & not using MarshaAs

Question: 31

You are developing an application that dynamically loads assemblies from an application directory. You need to write a code segment that loads an assembly named Company1.dll into the current application domain. Which code segment should you use?

A. Dim domain As AppDomain = AppDomain.CurrentDomainDim myPath As String =

_ Path.Combine(domain.BaseDirectory, "Company1.dll")Dim asm As [Assembly] =

[Assembly].LoadFrom(myPath)

B. Dim domain As AppDomain = AppDomain.CurrentDomainDim myPath As String = _

Path.Combine(domain.BaseDirectory, "Company1.dll")Dim asm As [Assembly] =

[Assembly].Load(myPath)

C. Dim domain As AppDomain = AppDomain.CurrentDomainDim myPath As String = _

Path.Combine(domain.DynamicDirectory, "Company1.dll")Dim asm As [Assembly] = _

AppDomain.CurrentDomain.Load(myPath)

D. Dim domain As AppDomain = AppDomain.CurrentDomainDim asm As [Assembly]

= domain.GetData("Company1.dll")

Answer: A

K8 - [Assembly].LoadFrom(myPath)

Question: 32

You need to read the entire contents of a file named Message.txt into a single string variable. Which code segment should you use?

A. Dim result As String = NothingDim reader As New

StreamReader("Message.txt")result = reader.Read().ToString()

B. Dim result As String = NothingDim reader as New

StreamReader("Message.txt")result = reader.ReadToEnd()

C. Dim result As String = string.EmptyDim reader As New

StreamReader("Message.txt")While Not reader.EndOfStream

result &= reader.ToString()End While

D. Dim result as String = NothingDim reader As New

StreamReader("Message.txt")result = reader.ReadLine()

Answer: B

K8 - ReadToEnd will read the entire file.

70-536 MCTS .NET Practice Questions #20

noreply@blogger.com (Catto) — Sat, 22 Aug 2009 01:55:00 +0000

Hey Now,

This content below is from some practice questions from the internet.

Thx,

Catto

Question: 6

You are working on a debug build of an application.

You need to find the line of code that caused an exception to be thrown. Which property of the

Exception class should you use to achieve this goal?

A. Data

B. Message

C. StackTrace

D. Source

Answer: C

(of course the stackTrace)

Question: 7

You need to write a code segment that performs the following tasks:

* Retrieves the name of each paused service.

* Passes the name to the Add method of Collection1.

Which code segment should you use?

A. ManagementObjectSearcher^ searcher =

gcnew ManagementObjectSearcher(

“Select * from Win32_Service where State = ‘Paused’”);for each (ManagementObject^

svc in searcher->Get()) {

Collection1->Add(svc[“DisplayName”]);}

B. ManagementObjectSearcher^ searcher =

gcnew ManagementObjectSearcher(

“Select * from Win32_Service”, “State = ‘Paused’”);for each (ManagementObject^ svc in

searcher->Get()) {

Collection1->Add(svc[“DisplayName”]);}

C. ManagementObjectSearcher^ searcher =

gcnew ManagementObjectSearcher(

“Select * from Win32_Service”);for each (ManagementObject^ svc in searcher->Get()) {

if ((String^) svc["State"] == "'Paused'") {

Collection1->Add(svc[“DisplayName”]);

}}

D. ManagementObjectSearcher^ searcher =

gcnew ManagementObjectSearcher();searcher->Scope = gcnew

ManagementScope(“Win32_Service”);for each (ManagementObject^ svc in

searcher->Get()) {

if ((String^)svc["State"] == "Paused") {

Collection1->Add(svc[“DisplayName”]);

}}

Answer: A

Question: 8

You need to serialize an object of type List(Of Integer) in a binary format. The object is named data. Which code segment should you use?

A. Dim formatter As New BinaryFormatter()Dim ms As New

MemoryStream()formatter.Serialize(ms, data)

B. Dim formatter As New BinaryFormatter()Dim ms As New MemoryStream() For i As

Integer = 1 To 20

formatter.Serialize(ms, data(i - 1))Next

C. Dim formatter As New BinaryFormatter()Dim buffer As New Byte(data.Count) {}Dim ms As

New MemoryStream(buffer, True)formatter.Serialize(ms, data)

D. Dim formatter As New BinaryFormatter()Dim ms As New MemoryStream()While

ms.CanRead formatter.Serialize(ms, data)End While\

Answer: A

70-536 MCTS .NET Practice Questions #19

noreply@blogger.com (Catto) — Sat, 22 Aug 2009 01:41:00 +0000

This content below is from some practice questions from the internet.

Thx,

Catto

Question: 1

You are writing a custom dictionary. The custom-dictionary class is named MyDictionary. You need to ensure that the dictionary is type safe.

Which code segment should you use?

A. Class MyDictionaryImplements Dictionary(Of String, String) B. Class MyDictionary Inherits HashTable

C. Class MyDictionary Implements IDictionary

D. Class MyDictionary

End Class

Dim t As New Dictionary(Of String, String)

Dim dict As MyDictionary = CType(t, MyDictionary)

Answer: A

Question: 2

You write a class named Employee that includes the following code segment.

Private m_EmployeeId As String Private m_EmployeeName As String Private m_JobTitleName As String Public Function GetName() As String Return m_EmployeeName

End Function

Public Function GetTitle() As String

Return m_JobTitleName

End Function

End Class

You need to expose this class to COM in a type library. The COM interface must also facilitate forward-compatibility across new versions of the Employee class. You need to choose a method

for generating the COM interface. What should you do?

A. Add the following attribute to the class definition.<ClassInterface(ClassInterfaceType.None)>

_Public Class Employee

B. Add the following attribute to the class definition.<ClassInterface(ClassInterfaceType.AutoDual)> _Public Class Employee

C. Add the following attribute to the class definition.<ComVisible(True)> _Public Class Employee

D. Define an interface for the class and add the following attribute to the class definition.<ClassInterface(ClassInterfaceType.None)> _Public Class EmployeeImplements IEmployee

Answer: D

Question: 3

You are developing a custom event handler to automatically print all open documents.

The event handler helps specify the number of copies to be printed. You need to develop a custom event arguments class to pass as a parameter to the event handler.

Which code segment should you use?

A. public class PrintingArgs {

private int copies;

public PrintingArgs(int numberOfCopies) {

this.copies = numberOfCopies;

public int Copies {

get { return this.copies; }

}}

B. public class PrintingArgs : EventArgs {

private int copies;

public PrintingArgs(int numberOfCopies) {

this.copies = numberOfCopies;

}

public int Copies {

get { return this.copies; }

}}

C. public class PrintingArgs {

private EventArgs eventArgs;

public PrintingArgs(EventArgs ea) {

this.eventArgs = ea;

}public EventArgs Args {get { return eventArgs; }}}

D. public class PrintingArgs : EventArgs {

private int copies;}

Answer: B

Question: 4

You use Reflection to obtain information about a method named MyMethod.

You need to ascertain whether MyMethod is accessible to a derived class. What should you do?

A. Call the IsAssembly property of the MethodInfo class.

B. Call the IsVirtual property of the MethodInfo class.

C. Call the IsStatic property of the MethodInfo class.

D. Call the IsFamily property of the MethodInfo class.

Answer: D

Question: 5

You are creating a class that uses unmanaged resources. This class maintains references to

managed resources on other objects. You need to ensure that users of this class can explicitly release resources when the class instance ceases to be needed. Which three actions should you perform? (Each correct answer presents part of the solution. Choose three.)

A. Define the class such that it inherits from the WeakReference class.

B. Define the class such that it implements the IDisposable interface.

C. Create a class destructor that calls methods on other objects to release the managed resources.

D. Create a class destructor that releases the unmanaged resources.

E. Create a Dispose method that calls System.GC.Collect to force garbage collection.

F. Create a Dispose method that releases unmanaged resources and calls methods on other objects to release the managed resources.

Answer: B, D, F