Status

2022-04-01T13:10:00.001+05:30

11. ________ programs are automatically loaded and operates as a part of browser.

a.Utilities

b.Plug-ins

c.Widgets

d.Add-ons

Answer: (b).

Plug-ins

12.Software which allows user to view the webpage is called as __________.

a.Operating System

b.Internet Browser

c.Interpreter

d.Website

Answer: (b).

Internet Browser

13.Which of the following website is used to search other website by typing a keyword ?

a.Routers

b.Crawler

c.Search Engine

d.Social Networks

Answer: (c).

Search Engine

14.Which of the following is called as protocol in the URL ?

http://www.compscibits.com

http

www

c4learn

.com

Answer: (a).

http

15.Whenever user opens any website then main page is called as ________.

a.Backend Page

b.Dead End

c.Home Page

d.None of these

Answer: (c).

Home Page

16.Whenever crawler crawls the website then any page not having a link is called as ________.

a.Dead End Page

b.Absolute Page

c.Home Page

d.Doorway Page

Answer: (a).

Dead End Page

17.URL means ________.

a.Address of the resource on the web

b.Term used to describe Website

c.Term used to get online program

d.None of these

Answer: (a).

Address of the resource on the web

18.Applets are written in _______ programming language.

a.Java

b.C++

c.C

d.C#

Answer: (a).

Java

19.HTML is derived from _______.

a.URL

b.SGML

c.TCP/IP

d.Browsers

Answer: (b).

SGML

20.Computer which stores the different web pages is called as ________.

a.Service Provider

b.Web Browser

c.Web crawler

d.Web Server

Answer: (d).

Web Server

21.The type of test used in computing to check whether or not the user is a human :

a.Debugging

b.Cryptanalysis

c.CAPTCHA

d.Black Box Testing

Answer: (c).

CAPTCHA

22.What is the use of Bookmarks in internet browsing?

a.To select a book for downloading

b.To mark the pages of a book you are reading online

c.To save the web pages for future use

d.To select a book or a file or a program for downloading

Answer: (c).

To save the web pages for future use

23.Which of the following is a ‘cloud computing’ based data storage facility?

a.Play store

b.G-mail storage

c.Drop box

d.Both b and c

Answer: (d).

Both b and c

24.Which of the following is the correct statement in the context of web 2.0 facilities?

a.Communication on these facilities is mostly one-way

b.Content on these facilities is generated mostly by users

c.These facilities are much more cheaper to establish

d.These facilities use more advanced distribution technologies

Answer: (b).

Content on these facilities is generated mostly by users

25.What is the difference between ‘Google’ and ‘Google Chrome’?

a.Google is a search engine whereas Google Chrome is a web browser

b.Google is a web site whereas Google Chrome is a search engine

c.Google is designed for use in table top computers whereas Google Chrome is designed for mobile devices

d.Google Chrome is an upgraded version of Google

Answer: (a).

Google is a search engine whereas Google Chrome is a web browser

26.Which of the following is a characteristic of Web 2.0 applications?

a.Multiple users schedule their time to use Web 2.0 applications one by one.

b.Web 2.0 have two applications are focused on the ability for people to collaborate and share information online.

c.Web 2.0 applications provide users with content rather than facilitating users to create it.

d.Web 2.0 applications use only static pages.

Answer: (b).

Web 2.0 have two applications are focused on the ability for people to collaborate and share information online.

27.WWW means …………..

a.World Wide Wonder

b.World Wide Wizard

c.World Wide Web

d.Wide World Web

Answer: (c).

World Wide Web

28.URL is a term associated with

a.Computer hardware

b.Internet

c.Laser printer

d.Fax

Answer: (b).

Internet

29.Which is not a search engine ?

a.Microsoft

b.Alta Vista

c.Google

d.Search Bug

Answer: (a).

Microsoft

30.Internal communication within institutions is done through

a.LAN

b.WAN

c.EBB

d.MMS

Answer: (a).

LAN

31.Which of the following is a social network ?

a.amazon.com

b.eBay

c.gmail.com

d.Twitter

Answer: (d).

Twitter

32.Which of the following is an instant messaging application ?

(a) WhatsApp

(b) Google Talk

Select the correct answer from the codes given below:

a.(a) and (b) only

b.(b) and (c) only

c. (a) only

d.(a), (b) and (c)

Answer: (d).

(a), (b) and (c)

33.Documents converted to …………… can be published to the Web.

a.a .doc file

http

machine language

HTML

View Answer Report Discuss Too Difficult!

Answer: (d).

HTML

34.

Twitter is generally used for :

secret information sharing

electronic mailing

interpersonal communication

social networking

View Answer Report Discuss Too Difficult!

Answer: (d).

social networking

35.

The "home page" of a web site is …………….

the largest page

the last page

the first page

the most colorful page

View Answer Report Discuss Too Difficult!

Answer: (c).

the first page

36.

What is a blog ?

Online music

Internet

is a website, where you write stuff on an ongoing basis

A personal or corporate Google search

View Answer Report Discuss Too Difficult!

Answer: (c).

is a website, where you write stuff on an ongoing basis

37.

Which one of the following is not a search engine?

Bing

Google

Yahoo

Windows

View Answer Report Discuss Too Difficult!

Answer: (d).

Windows

38.

Which is not a social networking site?

Google Plus

Wink

Buzz

View Answer Report Discuss Too Difficult!

Answer: (b).

Wink

39.

To view the pages on the Internet, they have to be installed on a ..................

local server

proxy server

foreign server

web server

View Answer Report Discuss Too Difficult!

Answer: (d).

web server

40.

MSN and AOL are the examples of _________.

Social Networking Sites

Online Service Providers

Internet Service Providers

Search Engines

View Answer Report Discuss Too Difficult!

Answer: (b).

Online Service Providers

41.

The Extension with which web documents are saved is _______.

.html

.class

.css

View Answer Report Discuss Too Difficult!

Answer: (a).

.html

42.

Which of the following is an example of search engine ?

Bing

Yahoo

Alta Vista

All of these

View Answer Report Discuss Too Difficult!

Answer: (d).

All of these

43.

Which of the following search engine is developed by Microsoft __________.

Bing

Alta Vista

Google

Yahoo

View Answer Report Discuss Too Difficult!

Answer: (a).

Bing

44.

Amazon is a best example of ______ site.

Entertainment

Blogging

Social Networking

E-Commerce

View Answer Report Discuss Too Difficult!

Answer: (d).

E-Commerce

45.

A __________ is the simplest form of website, in which the site’s content is delivered without the use of server side processing.

E-Commerce Website

Dynamic Websites

Static website

Social Networking Websites

View Answer Report Discuss Too Difficult!

Answer: (c).

Static website

46.

WordPress can be called as ___________.

Content Managed Websites

Dynamic Websites

eCommerce Websites

Static Website

View Answer Report Discuss Too Difficult!

Answer: (a).

Content Managed Websites

47.

Which of the following website type is used to create beautiful animations ?

Flash

Dynamic

eCommerce

Static

View Answer Report Discuss Too Difficult!

Answer: (a).

Flash

48.

Flash is proprietary software developed by __________.

Sencha

Macromedia

Yahoo

Google

View Answer Report Discuss Too Difficult!

Answer: (b).

Macromedia

49.

Simple plain HTML is used to create following type of website ____________.

Completely Dynamic Website

Completely Flash Website

Completely Static Website

None of these

View Answer Report Discuss Too Difficult!

Answer: (c).

Completely Static Website

50.

Select Odd Man Out -

Google , Amazon , Bing , Ask

Amazon

Ask

Bing

Google

View Answer Report Discuss Too Difficult!

Answer: (a).

Amazon

51.

Google+ is another alternative to which of the following site ?

Amazon

Facebook

Bing

Yahoo

View Answer Report Discuss Too Difficult!

Answer: (b).

Facebook

52.

Static Websites are generally designed using _________.

Dreamviewer

Visual C++ Studio

Netbeans

Eclipse

View Answer Report Discuss Too Difficult!

Answer: (a).

Dreamviewer

53.

Student A used combination of PHP,MySQL and HTML for his project. What is the type of website developed by Student A ?

Dynamic

Flash

Static

None of these

View Answer Report Discuss Too Difficult!

Answer: (a).

Dynamic

54.

Arrange the following websites in chronological order of development.

1. Google

2. Yahoo

3. Google+

4. Orkut

2 4 3 1

2 1 4 3

2 1 3 4

2 4 3 1

View Answer Report Discuss Too Difficult!

Answer: (b).

2 1 4 3

55.

Select Odd Entry -

Google+, Bing, Orkut , Youtube

Google+

Youtube

Bing

Orkut

View Answer Report Discuss Too Difficult!

Answer: (c).

Bing

56.

Which of the following is used to view maps and places ?

Google Maps

Google Places

Google Show

Google Countries

View Answer Report Discuss Too Difficult!

Answer: (a).

Google Maps

57.

Which of the following is best site for Encyclopedia ?

Yahoo Answers

Google

Ask

Wikipedia

View Answer Report Discuss Too Difficult!

Answer: (d).

Wikipedia

58.

Which of the following is not an example of eCommerce site ?

Tweeter

Ebay

FlipKart

Amazon

View Answer Report Discuss Too Difficult!

Answer: (a).

Tweeter

59.

Which of the following website is not used for watching videos ?

Metacafe

YouTube

Dailymotion

View Answer Report Discuss Too Difficult!

Answer: (a).

60.

Search engine are used to ________.

Search Videos

Search Documents

Software system that is designed to search for information on the World Wide Web

All of these

View Answer Report Discuss Too Difficult!

Answer: (d).

All of these

61.

The search results are generally presented in a line of results often referred to as ___________.

Tag List

Search Engine Results Pages

Search Engine Pages

Category List

View Answer Report Discuss Too Difficult!

Answer: (b).

Search Engine Results Pages

62.

Search Engines are able to search ________ type of information.

Videos

Documents

Images

All of these

View Answer Report Discuss Too Difficult!

Answer: (d).

All of these

63.

Arrange the search engines by their year of development.

1. Bing

2. Yahoo

3. Ask

4. Google

2 4 1 3

2 1 3 4

2 1 4 3

2 4 3 1

View Answer Report Discuss Too Difficult!

Answer: (d).

2 4 3 1

64.

Web search engines stores information about many web pages by a ______.

Web Indexer

Web Organizer

Web Router

View Answer Report Discuss Too Difficult!

Answer:

Web Crawler

65.

Web Crawler is also called as __________.

Link Directory

Search Optimizer

Web Spider

Web Manager

View Answer Report Discuss Too Difficult!

Answer: (c).

Web Spider

66.

SEO Stands for ___________.

Search Engine Operation

Search Entry Optimization

Search Engine Optimization

None of these

View Answer Report Discuss Too Difficult!

Answer: (c).

Search Engine Optimization

67.

HTML Stands for ____________.

Hyper Text Markup Language

Hybrid Text Markup Language

Hyper Text Manipulation Language

None of these

View Answer Report Discuss Too Difficult!

Answer: (a).

Hyper Text Markup Language

68.

ISP Stands for __________.

International Service Provider

Internet Service Provider

Internet Server Provider

None of these

View Answer Report Discuss Too Difficult!

Answer: (b).

Internet Service Provider

69.

WWW is the short form for __________.

World Wide Web

Word Wild Web

Word Wide Web

None of these

View Answer Report Discuss Too Difficult!

Answer: (a).

World Wide Web

70.

HTTP Stands for ________.

Hybrid Tecq Transfer Protocol

Hyper Text Transfperent Protocol

Hyper Text Transfer Protocol

None of these

View Answer Report Discuss Too Difficult!

Answer: (c).

Hyper Text Transfer Protocol

71.

URL is short form for ____________.

Universal Resource Loader

Uniform Resource Locator

Uniform Resource Loader

None of these

View Answer Report Discuss Too Difficult!

Answer: (b).

Uniform Resource Locator

72.

Long form of FTP is _________.

File Transmission Protocol

Frequently Transfer Protocol

File Transfer Protocol

None of these

View Answer Report Discuss Too Difficult!

Answer: (c).

File Transfer Protocol

73.

Long form of SMTP is ___________.

Simple Mail Transfer Protocol

Simple Markup Transmission Protocol

Single Mail Transfer Protocol

None of these

View Answer Report Discuss Too Difficult!

Answer: (a).

Simple Mail Transfer Protocol

74.

Full form of IMAP is ____________.

Internet Message Access Protocol

Intranet Message Access Protocol

Internet Message Application Protocol

None of these

View Answer Report Discuss Too Difficult!

Answer: (a).

Internet Message Access Protocol

75.

Full form of POP is __________.

Preliminary Operational Protocol

Post office Protocol

Post Operation Protocol

None of these

View Answer Report Discuss Too Difficult!

Answer: (b).

Post office Protocol

76.

Long form of SEO ?

Search Email Operation

Search Engine Operation

Search Engine Optimization

None of these

View Answer Report Discuss Too Difficult!

Answer: (c).

Search Engine Optimization

77.

Which of the following language is used to write animation and games in browser ?

Java

C Programming

HTML

None of these

View Answer Report Discuss Too Difficult!

Answer: (a).

Java

78.

___________ programs automatically connects to web sites and download documents and save them to local drive.

Web Servers

Web Downloading Utilities

Offline Browsers

None of these

View Answer Report Discuss Too Difficult!

Answer: (b).

Web Downloading Utilities

79.

Which of the following is valid Website Address ?

compscibits@.com

www.compscibits

ww#.compscibits.com

www.compscibits.com

View Answer Report Discuss Too Difficult!

Answer: (d).

www.compscibits.com

80.

To design webpages we need to use _________.

Server

XML

Browser

HTML

View Answer Report Discuss Too Difficult!

Answer: (d).

HTML

81.

Network Connecting Several networks is called as _________.

Social Network

ARPA net

Internet

Intranet

View Answer Report Discuss Too Difficult!

Answer: (c).

Internet

82.

_______________ is used to convert your application into Web-Application.

Struts Services

Web Services

Java Service

Browser Action

View Answer Report Discuss Too Difficult!

Answer: (b).

Web Services

83.

Web Services are _______________.

Application Designing Tool

Application IDE

Application Components

None of these

View Answer Report Discuss Too Difficult!

Answer: (c).

Application Components

84.

The basic Web Services platform is combination of _____ and _______.

CSS + HTTP

XML + HTML

XML + HTTP

CSS + JAVA

View Answer Report Discuss Too Difficult!

Answer: (c).

XML + HTTP

85.

Web services communicate using __________.

Open protocols

Close protocols

Open-Close protocols

None of these

View Answer Report Discuss Too Difficult!

Answer: (a).

Open protocols

86.

Web services can be discovered using ________.

UDDII

UDDI

UDDDI

UDII

View Answer Report Discuss Too Difficult!

Answer: (b).

UDDI

87.

__________ is the basis for Web services.

PHP

XML

CGI

CSS

View Answer Report Discuss Too Difficult!

Answer: (b).

XML

88.

Which of the following is considered as Web Service Platform Elements ?

UDDI

WSDL

SOAP

All of these

View Answer Report Discuss Too Difficult!

Answer: (d).

All of these

89.

WSDL Stands for ______________________.

Web Services Development Language

Web Services Design Language

Web Services Description Language

None of these

View Answer Report Discuss Too Difficult!

Answer: (c).

Web Services Description Language

90.

UDDI Stands for ______________________.

Universal Description, Development and Integration

Universal Description, Discovery and Integration

Universal Development, Design and Integration

None of these

View Answer Report Discuss Too Difficult!

Answer: (b).

Universal Description, Discovery and Integration

91.

Long form of SOAP is ______________.

Secure Object Access Protocol

Simple Object Access Protocol

Simplified Object Arbitary Protocol

None of these

View Answer Report Discuss Too Difficult!

Answer: (b).

Simple Object Access Protocol

92.

Web-applications were developed in order to interact _____________ .

Browsers

Server

Different platforms

None of these

View Answer Report Discuss Too Difficult!

Answer: (c).

Different platforms

93.

Web services use ________ to code and to decode data.

SOAP

XML

UDDI

None of these

View Answer Report Discuss Too Difficult!

Answer: (b).

XML

94.

Web Services is used to

Solve the interoperability problem

Reuse application-components

Connect existing software

All of these

View Answer Report Discuss Too Difficult!

Answer: (d).

All of these

95.

SOAP is an _________ to let applications exchange information over HTTP.

XML-based protocol

JAVA-based protocol

PHP-based protocol

.NET-based protocol

View Answer Report Discuss Too Difficult!

Answer: (a).

XML-based protocol

96.

SOAP is a _________.

Language

Carrier

Protocol

Markup

View Answer Report Discuss Too Difficult!

Answer: (c).

Protocol

97.

SOAP is platform ___________.

Independent

Dependent

Independent upto some extent

None of these

View Answer Report Discuss Too Difficult!

Answer: (a).

Independent

98.

SOAP is a format for sending messages and is also called as __________.

Network protocol

Data Transfer protocol

Communication protocol

None of these

View Answer Report Discuss Too Difficult!

Answer: (c).

Communication protocol

99.

_________ is a directory for storing information about web services.

HTTP

SOAP

UDDI

CGI

View Answer Report Discuss Too Difficult!

Answer: (c).

UDDI

100.

Storage area for E–mail messages is called

Store

Folder

File

Mail Box

View Answer Report Discuss Too Difficult!

Answer: (d).

Mail Box

101.

Telnet is a ______ based computer protocol.

Text

Image

Animation

Sound

View Answer Report Discuss Too Difficult!

Answer: (a).

Text

102.

MIME stands for

Multipurpose Internet Mail Extra

Multipurpose Internet Mail End

Multipurpose Internet Mail Email

Multipurpose Internet Mail Extensions

View Answer Report Discuss Too Difficult!

Answer: (d).

Multipurpose Internet Mail Extensions

103.

There are Four Scenarios in

Domains

Servers

View Answer Report Discuss Too Difficult!

Answer: (a).

104.

Mail access starts with client when user needs to download e-mail from the

Mail Box

Internet

IP server

Mail Server

View Answer Report Discuss Too Difficult!

Answer: (a).

Mail Box

105.

When sender and receiver of an e-mail are on same system, we need only two

User Agents

Servers

Domain

View Answer Report Discuss Too Difficult!

Answer: (a).

User Agents

106.

Computer SOAP is

format for sending message

designed to communicate via internet

an independent platform

all of these

View Answer Report Discuss Too Difficult!

Answer: (d).

all of these

107.

Which of the following is not a name for an item that could be a security threat to your computer?

trojan horse

metacrawler

worm

virus

View Answer Report Discuss Too Difficult!

Answer: (a).

trojan horse

108.

In computer, UDDI stands for

uniform description discovery and integration

universal description discovery and integration

uniform discovery description and integration

uniform discovery delivery and integration

View Answer Report Discuss Too Difficult!

Answer: (b).

universal description discovery and integration

109.

Example of metasearch engine includes

mamma

search.io

polymeta

all of these

View Answer Report Discuss Too Difficult!

Answer: (d).

all of these

110.

A search engine which is a tool that uses another search engine's data to produce their own results from the internet, are known as

advance search engine

metasearch engine

search tool

boolean search engine

View Answer Report Discuss Too Difficult!

Answer: (b).

metasearch engine

111.

Search engine which takes input from a user and simultaneously send out queries to third party search engines for result, is

advance search engine

metasearch engine

search tool

boolean search engine

View Answer Report Discuss Too Difficult!

Answer: (b).

metasearch engine

112.

Collection of documents stored on a computer which is permanently connected with internet around the world is called

telnet

WWW

LAN

FTP

View Answer Report Discuss Too Difficult!

Answer: (b).

WWW

113.

The computer jargon, WWWW stands for

world wide web worm

world wide wildlife web

world wide women's web

world wide women's week

View Answer Report Discuss Too Difficult!

Answer: (a).

world wide web worm

114.

Internet which is accessed by transmitting digital data over the wires of a local telephone network is provided by

leased line

digital subscriber line

digital signal line

land line

View Answer Report Discuss Too Difficult!

Answer: (b).

digital subscriber line

115.

A computer on internet is identified by

email address

street address

IP address

server address

View Answer Report Discuss Too Difficult!

Answer: (c).

IP address

116.

Computer web pages are written in type of language which is

hypertext

multimedia

hyperlinks

assembly

View Answer Report Discuss Too Difficult!

Answer: (a).

hypertext

117.

Computer web pages are connected to one another using

hyperlinks

http

interlink

multimedia

View Answer Report Discuss Too Difficult!

Answer: (a).

hyperlinks

118.

The world Wide Web was introduced in

1960s

mid-1970s

1989

2000

View Answer Report Discuss Too Difficult!

Answer: (c).

1989

119.

To design a webpage we need to use

server

XML

browser

HTML

View Answer Report Discuss Too Difficult!

Answer: (d).

HTML

120.

In computer, URL means

address of the resource on the web

term used to describe website

term used to get online program

term used to connect computers

View Answer Report Discuss Too Difficult!

Answer: (a).

address of the resource on the web

121.

IPv6 addressed have a size of

32 bits

64 bits

128 bits

265 bits

View Answer Report Discuss Too Difficult!

Answer: (c).

128 bits

122.

A website's main page is called

browser page

search page

home page

bookmark

View Answer Report Discuss Too Difficult!

Answer: (c).

home page

123.

Verification of a login name and password is called

configuration

accessibility

authentication

logging in

View Answer Report Discuss Too Difficult!

Answer: (c).

authentication

124.

Another name of internet is

virtual space

data space

information space

cyber space

View Answer Report Discuss Too Difficult!

Answer: (d).

cyber space

125.

Internet explorer falls under

operating system

compiler

browser

IP address

View Answer Report Discuss Too Difficult!

Answer: (c).

browser

126.

In computer, HTML is used to create

machine language program

high level program

web page

web server

View Answer Report Discuss Too Difficult!

Answer: (c).

web page

127.

ISP exchanges internet traffic between their networks with the help of

internet exchange point

subscriber end point

ISP end point

internet society

View Answer Report Discuss Too Difficult!

Answer: (a).

internet exchange point

128.

Browsers use a standardized syntax called?

TCP/IP

HTML

XML

Java

View Answer Report Discuss Too Difficult!

Answer: (b).

HTML

129.

A ______ is a globally unique name for every document that can be accessed on the Web

UCL

URL

UML

View Answer Report Discuss Too Difficult!

Answer: (c).

URL

130.

A ______ is a program running on the server which accepts requests from a browser and sends HTML documents

Web server

Web transmitter

Web intermediate

Web multitasker

View Answer Report Discuss Too Difficult!

Answer: (a).

Web server

131.

What is the use of CGI?

It specifies the path of data transfer

It specifies how the server communicates with the application programs

It charts out error handling procedures in case an error arises

None of the mentioned

View Answer Report Discuss Too Difficult!

Answer: (b).

It specifies how the server communicates with the application programs

132.

The extra information of a site maintained at the client end is called as _______

Password

History

Sessions

View Answer Report Discuss Too Difficult!

Answer: (a).

133.

State true or false: HTTP is connectionless

True

False

May be

Can't say

View Answer Report Discuss Too Difficult!

Answer: (a).

True

134.

What is the full form of CGI?

Common graphics interface

Common gateway interface

Common gateway internet

Common gateway information

View Answer Report Discuss Too Difficult!

Answer: (b).

Common gateway interface

135.

Which of the following functions are done by a web server?

Accept requests from a web browser

Sends back results in HTML

Executes programs with arguments supplied by the user

All of the mentioned

View Answer Report Discuss Too Difficult!

Answer: (d).

All of the mentioned

136.

What is the function of the cascading style sheet

Allows us to edit the HTML document

It is an IDE that allows us to write HTML codes more efficiently

It allows us to use the same style on multiple HTML documents

It acts as an intermediary to provide a variety of information services

View Answer Report Discuss Too Difficult!

Answer: (c).

It allows us to use the same style on multiple HTML documents

137.

Which of the following is true regarding the model-view- controller architecture?

The model corresponds to the business logic layer

The view defines the presentation of data

The controller receives events, executes actions on the model and returns a view

All of the mentioned

View Answer Report Discuss Too Difficult!

Answer: (d).

All of the mentioned

138.

The ___________ provides a high level view of data and actions on data

Business-logic layer

Data access layer

Data transfer layer

Business manager layer

View Answer Report Discuss Too Difficult!

Answer: (a).

Business-logic layer

139.

The _________ layer provides the interface between the business logic layer and the underlying database

Business-logic layer

Data access layer

Data transfer layer

Business manager layer

View Answer Report Discuss Too Difficult!

Answer: (b).

Data access layer

140.

What are workflows in a business logic layer?

They describe how a particular task that involves servers is handled

They describe how multiple tasks involving a single participant is handled

They describe how a particular task involving multiple participants is handled.

None of the mentioned

View Answer Report Discuss Too Difficult!

Answer: (c).

They describe how a particular task involving multiple participants is handled.

141.

State true or false: The code implementing the actions in the business logic layer ensures that business rules are followed

True

False

May be

Can't say

View Answer Report Discuss Too Difficult!

Answer: (a).

True

142.

What is the full form of JSON?

JavaScript Object Native

JavaScript Object Notation

JavaScript Object Negation

Java Object Notation

View Answer Report Discuss Too Difficult!

Answer: (b).

JavaScript Object Notation

143.

Which of the following features does Rapid Application Development possess?

Provide a library of functions to generate UI elements

Provide drag and drop features in a n IDE

Auto generation of code for the user interface from a declarative specification

All of the mentioned

View Answer Report Discuss Too Difficult!

Answer: (d).

All of the mentioned

144.

Which of the following is not a web application development framework feature?

An object oriented model

A declarative way of specifying a form with validation constraints

Creating mass servers for effective handling of data

A template scripting system

View Answer Report Discuss Too Difficult!

Answer: (c).

Creating mass servers for effective handling of data

145.

What are report generators?

They are the tools to generate human readable reports from a database

They are the tools that generate reports on the statistics of the database usage

They are the tools that prevent database querying and instead they generate pie charts and graphs

None of the mentioned

View Answer Report Discuss Too Difficult!

Answer: (a).

They are the tools to generate human readable reports from a database

146.

Which of the following methods is used to reduce overhead?

Connection pooling

Parallel Processing

Caching Query Results at the server

All of the mentioned

View Answer Report Discuss Too Difficult!

Answer: (d).

All of the mentioned

147.

An approach to website design with the emphasis on converting visitors to outcomes required by the owner is referred to as:

Web usability

Persuasion

Web accessibility

None of the mentioned

View Answer Report Discuss Too Difficult!

Answer: (b).

Persuasion

148.

A method of modelling and describing user tasks for an interactive application is referred to as:

Customer journey

Primary persona

Use case

Web design persona

View Answer Report Discuss Too Difficult!

Answer: (c).

Use case

149.

Information architecture influences:

Answer choice

Site structure

Labeling

Navigation design

View Answer Report Discuss Too Difficult!

Answer: (b).

Site structure

150.

Also known as schematics, a way of illustrating the layout of an individual webpage is a:

Wireframe

Sitemap

Card sorting

Blueprint

View Answer Report Discuss Too Difficult!

Answer: (a).

Wireframe

151.

A graphical or text depiction of the relationship between different groups of content on a website is referred to as a:

Wireframe

Blueprint

Sitemap

Card sorting

View Answer Report Discuss Too Difficult!

Answer: (c).

Sitemap

152.

Blueprints are intended to:

Prototype of the screen layout showing navigation and main design elements

Show the grouping of pages and user journeys

Indicate the structure of a site during site design and as a user feature

Prototype typical customer journeys or clickstreams through a website

View Answer Report Discuss Too Difficult!

Answer: (c).

Indicate the structure of a site during site design and as a user feature

153.

Storyboards are intended to:

Indicate the structure of a site during site design and as a user feature

Prototype of the screen layout showing navigation and main design elements

Integrate consistently available components on the webpage (e.g. navigation, search boxes)

Prototype typical customer journeys or click streams through a website

View Answer Report Discuss Too Difficult!

Answer: (d).

Prototype typical customer journeys or click streams through a website

154.

Which of the following occupies boot record of hard and floppy disks and activated during computer startup?

Worm

Boot sector virus

Macro virus

Virus

View Answer Report Discuss Too Difficult!

Answer: (b).

Boot sector virus

155.

A graphical or text depiction of the relationship between different groups of content on a website is a:

Page template

Wireframe

Site map

Cascading style sheet (CSS)

View Answer Report Discuss Too Difficult!

Answer: (c).

Site map

156.

Which of the following is a description of information organization schemes?

Minimising the number of clicks needed to access relevant content

Providing an overall design to a site consistent with the positioning of the products and services

The menu options chosen to group and categorize information

Providing specific content and services appropriate to different audience members

View Answer Report Discuss Too Difficult!

Answer: (c).

The menu options chosen to group and categorize information

157.

Which of the following is a valid uniform resource locator ?

http://www.acm.org/sigmod

www.google.com

www.ann.in

http:/www.acm.org/sigmod/

View Answer Report Discuss Too Difficult!

Answer: (a).

http://www.acm.org/sigmod

158.

http://www.google.com/search?q=silberschatz

In the above URL which one is the argument which is used for processing of the URL?

google

google.com

q=silberschatz

View Answer Report Discuss Too Difficult!

Answer: (d).

q=silberschatz

159.

HTTP defines two ways in which values entered by a user at the browser can be sent to the Web server. The _____ method encodes the values as part of the URL.

Post

Get

Read

Argument

View Answer Report Discuss Too Difficult!

Answer: (b).

Get

160.

A __________ is a program running on the server machine,which accepts requests from a Web browser and sends back results in the form of HTML documents.

HTML

HTTP

Web Server

Web browser

View Answer Report Discuss Too Difficult!

Answer: (c).

Web Server

161.

The application program typically communicates with a database server, through ___________ or other protocols, in order to get or store data.

JDBC

ODBC

All of the mentioned

None of the mentioned

View Answer Report Discuss Too Difficult!

Answer: (c).

All of the mentioned

162.

This extra information is usually maintained in the form of a _________ at the client.

History

Remainder

None of the mentioned

View Answer Report Discuss Too Difficult!

Answer: (a).

163.

Which of the following is not true about HTML ?

<meta…./>

View Answer Report Discuss Too Difficult!

Answer: (b).

<meta…./>

164.

Html code contains:

Embeded System and Internet of Things(IOT) MCQ

2022-04-01T13:08:00.000+05:30

IoT (Internet of Things) MCQ

1) How many numbers of the element in the open IoT architecture?

Four elements
Five elements
Six elements
Seven elements

Answer: (d) Seven elements

Description: There are seven numbers of elements in the open IoT architecture:

Configuration and monitoring
Cloud data storage
Scheduler
Request definition
Request presentation
Service delivery and utility manager
Sensor middleware (X-GSN)

2) Which of the following is the way in which an IoT device is associated with data?

Internet
Cloud
Automata
Network

Answer: (b) Cloud

Description: Cloud-based services provide a way for IoT devices to be connected to data. For example: Just as the WWW (World Wide Web) runs on the Internet, so does IoT.

3) Which of the following IoT networks has a very short range?

Short Network
LPWAN
SigFox
Short-range Wireless Network

Answer: (d) Short Range Wireless Network

Description: Short-range wireless networks have a very short range. This type of network is used for applications running in the local environment. The best example of this network is Wi-Fi and Bluetooth.

4) What is the full form of the LPWAN?

Low Protocol Wide Area Network
Low Power Wide Area Network
Long Protocol Wide Area Network
Long Power Wide Area Network

Answer: (b) Low Power Wide Area Network

Description: The full form of the LPWAN is Low Power Wide Area Network. LPWAN is a type of wireless telecommunication, and it is specially designed for M2M (Machine to Machine) and IoT devices.

5) An IoT network is a collection of ______ devices.

Signal
Machine to Machine
Interconnected
Network to Network

Answer: (c) Interconnected

Description: An IoT network is a collection of interconnected devices that communicate with other devices without human involvement.

6) Which one of the following is not an IoT device?

Amazon echo voice controller
Google Home
Nest Smoke Alarm
None of these

Answer: (d) None of the these

Description: These are all IoT devices. Google Home is a smart speaker that obeys all the commands given by the user. The Amazon Echo Voice Controller is also a smart speaker. The Nest Smoke Alarm is an IoT device that sends a smoke alert message to the user when a fire occurs.

7) What is the main purpose of WoT (Web of Things) in the IoT?

Improve the usability and interoperability
Reduce the security
Complex the development
Increase the cost

Answer: (a) Improve the usability and interoperability

Description: The main purpose of the Web of Things is to improve the usability and interoperability in IoT. Developing IoT Apps through WoT is much easier, faster, and less expensive.

8) What is the Arduino UNO?

Software
Hardware device
Network
Protocol

Answer: (b) Hardware device

Description: The Arduino Uno is a hardware device that is based on the Microchip ATmega328P microcontroller. It has been developed by Arduino.cc.

9) ______ allows the user to control electronic components.

Android API
RETful API
MQTT API
CoAP API

Answer: (b) RETful API

Description: The RETful API allows the user to control the electronic components connected to the Intel Galileo Gen 2 board via HTTP requests.

10) Which of the following is not an application of IoT?

Wearables
Smart Grid
Arduino
Smart City

Answer: (c) Arduino

Description: The Arduino Uno is a hardware device that is based on the Microchip ATmega328P microcontroller.

11) Which one of the following protocols is lightweight?

IP
HTTP
MQTT
CoAP

Answer: (c) MQTT

Description: The full form of the MQTT is Message Queue Telemetry Transport. It is a lightweight messaging protocol that runs over the TCP / IP protocol.

12) What is the role of Big Data in IoT's Smart Grid architecture?

Filter the data
Locked the data
Store data
None of the these

Answer: (c) Store data

Description: The main role of Big Data is to store data on a real-time basis. It uses multiple storage technologies to store the data.

13) What is the real example of a smart grid device in IoT?

Mobile phone
Television
Smart Speaker
Smart Meters

Answer: (d) Smart Meters

Description: Smart Grid is used to monitor the power supply. Consumers' data is collected using a smart grid, and that data is analyzed and distributed to the consumers. The real example of a smart grid device is a smart meter.

14) What is the full form of the MQTT?

Multi-Queue Telemetry Things
Multiple Queue Telemetry Things
Message Queue Telemetry Things
Message Queue Telemetry Transport

Answer: (d) Message Queue Telemetry Transport

Description: The full form of the MQTT is Message Queue Telemetry Transport. It is a lightweight messaging protocol that runs over the TCP / IP protocol.

15) What is the full form of ICT?

InterConnect Technology
Internet Connection Topology
Information and Communication Technology
Infer Communication Topology

Answer: (c) Information and Communication Technology

Description: The full form of ICT is Information and Communication Technology. ICT is a multidimensional term for the IT sector that refers to all communication technologies, including the Internet, wireless networks, cell phones, computers, and software.

16) Which of the following frequencies is correct for the Galileo gen 2 board?

250 MHz
400 MHz
450 MHz
300 MHz

Answer: (b) 400 MHz

Description: The frequency of this board is 400 MHz. The Galileo gen 2 board frequency gives the speed of operation of the board. Therefore, the speed increases as the frequency increases.

17) What is the full form of IANA?

Inter-Assessment-Number-Access
Internet-Association-Numbers-Authority
International-Aid-for-Network-Authority
Internet-Assigned-Numbers-Authority

Answer: (d) Internet-Assigned-Numbers-Authority

Description: The full form of IANA is Internet-Assigned-Numbers-Authority. It is an administrative function of the Internet that monitors the IP addresses and domain names.

18) What is the standard port number of secure MQTT?

1883
8000
8883
8888

Answer: (c) 8883

Description: The standard port number of Secure MQTT is 8883, and it is registered in IANA for Secure MQTT.

19) Which of the following layers provides end-to-end communication in IoT?

Logical layer
Data link layer
Transport layer
Session layer

Answer: (c) Transport layer

Description: The transport layer focuses on end-to-end communication, and it gives reliability and congestion avoidance that packets will be delivered in the same way as the user sent the packet.

20) Which of the following devices is used to measure the gases or liquid?

Optical Sensor
Gas Sensor
Smoke Sensor
Pressure sensor

Answer: (d) Pressure sensor

Description: The pressure sensor is used to measure the gases or liquid. Pressure is the expression of a force that is necessary to prevent fluid from expansion.

21) Which interface does the fingerprint sensor use?

UART interface
CoAP interface
SPI interface
I2P interface

Answer: (a) UART interface

Description: The fingerprint sensor uses a UART interface to store fingerprint data. It can be configured in 1:1 or 1:N mode to identify the person.

22) Which of the following protocols is used by USART?

RS32
RS232C
4RS85
All of the these

Answer: (b) RS232C

Description: The most commonly used protocol for USART in asynchronous mode is RS232C. This protocol describes the physical interface for relatively low-speed serial data-communication between devices and computers.

23) What is the full form of HDLC?

Higher Data Level Communication
Higher Data Link Communication
High-level Data Link Control
High Data Level Control

Answer: (c) High-level Data Link Control

Description: The full form of the HDLC is High level Data Link Control. It is a communication protocol. It is used to transmit data between nodes and data points.

24) Which of the following "bit" defines the address bit in the control register?

ML
MM
RXWake
None of the these

Answer: (b) MM

Description: The MM bit defines the address bit in the control register.

25) What is another name for I2C?

Signal wire interface
Two wire interfaces
UART
USART

Answer: (b) Two wire interface

Description: The I2C protocol is also known as the two-wire interface. It is a simple serial-communication-protocol that uses pins of a microcontroller, named as serial clock (SCL) and serial data (SDA).

26) When the clock line SCL is high, the SDA is ____ transitioned.

Low
High
Medium
All of the these

Answer: (a) Low

Description: When the clock line SCL is high, the SDA is low transitioned. Under normal circumstances, this does not happen, as you can see in the subsequent clock pulses that the data line is stable in one state, either high or low, when the clock line is high.

27) Which of the following protocols does the secure digital card application use?

XMPP
SPI
MQTT
HTTPS

Answer: (b) SPI

Description: SPI stands for Serial Peripheral Interface. The SPI protocol is commonly used to secure digital card applications and liquid crystal displays.

28) How many logic signals are there in the SPI protocol?

Five signals
Six signals
Nine signals
Zero signals

Answer: (a) Five signals

Description: There are five logic signals in the SPI protocol.

SCLK (Serial Clock): This signal is used to clock-signal.
MOSI (Master Output Slave Input): This signal is used to transfer the data from master to slave.
MISO (Master Input Slave Output): This signal is used to transfer the data from slave to master.
SDIO (Serial Data I/O)
SS (Slave Select)

29) What does MOSI mean?

MOSI is a network line.
MOSI is a clock signal that sends the clock signals from master to slave.
MOSI is a data line that sends the data from master to slave.
None of the these

Answer: (c) MOSI is a data line that sends the data from master to slave.

Description: MOSI stands for Master Out Slave In. MOSI is a data line that sends the data from master to slave.

30) What is the full form of HART?

Highway Application Remote Transport
Highway Addressable Remote Transducer
High Address Reduce Transport
High Application Remote Transport

Answer: (b) Highway Addressable Remote Transducer

Description: The full form of HART is Highway Addressable Remote Transducer. It is a master and slave protocol in which a slave device only speaks when spoken by a master.

31) What is the range of z-wave?

30 to 100 m
300 to 1000 m
100 to 1000 m
Only 10 m

Answer: (a) 30 to 100 m

Description: The Z-Wave is a low-power Mac protocol designed especially for smart home and small business domains. It covers the range from 30 to 100 m.

32) Which of the following topology is used for ZigBee Smart Energy?

Bus Topology
Ring Topology
Star Topology
Any Topology

Answer: (c) Star Topology

Description: ZigBee Smart Energy is designed for a wide range of IoT applications. It supports a wide range of network topologies, such as star topology.

33) Which of the following protocols does not exist at the data link layer?

ZigBee Smart Energy
LoRaWAN
WirelessHART
Secure MQTT

Answer: (d) Secure MQTT

Description: Secure MQTT is a session layer protocol. It is an extended version of the MQTT protocol that uses encryption based on lightweight attribute-based encryption.

34) Which of the following is the type of SPI controller?

Micro-wire or plus
Microwire
Data SPI
Queued SPI

Answer: (d) Queued SPI

Description: A Queued SPI is a type of SPI controller that is used to send a data queue from the SPI bus.

35) What is MQTT primarily used for?

User communication
System transfer
Machine to Machine Communication
Create connection

Answer: (c) Machine-to-Machine Communication

Description: MQTT is a public messaging protocol. It is designed for lightweight "Machine to Machine" communication. It was originally developed by IBM.

36) What is the frequency rate of z-wave?

908.42 GHz
928.49 GHz
888.42 GHz
708.49 GHz

Answer: (a) 908.42 GHz

Description: The frequency rate of z-wave is 908.42 GHz. The Z-Wave is a low-power Mac protocol designed especially for smart home and small business domains.

37) What is another name of the tactile sensor?

Weight sensor
Imaging sensor
Proximity sensor
Touch sensor

Answer: (d) Touch sensor

Description: The tactile sensor is also called a touch sensor. It is an electronic sensor used for detecting physical touch. The size of this sensor is very small.

38) How many types of capacitive touch sensors in IoT?

Two types
Five types
Seven types
Nine types

Answer: (a) Two types

Description: Two types of capacitive touch sensors in IoT:

Projected-capacitive sensing
Surface-capacitive sensing

39) Which of the following touch sensors is used in a cell phone?

Resistive touch sensors
Human sensor
Capacitive touch sensor
Follow sensor

Answer: (c) Capacitive touch sensor

Description: The capacitive touch sensors are widely used in portable devices such as cell phones. The main reason for this sensor development on the phone is low cost, durability, and design.

40) Which of the following languages does GSN work on?

Python
JAVA
Android
C++

Answer: (b) JAVA

Description: GSN stands for Global Sensor Network. GSN works on JAVA language because JAVA language is portable in nature. The other language (such as C, C++, Python, and HTML) is not portable in nature.

41) Which of the following is the example of a short-range wireless network?

VPN
Wi-Fi
Internet
WWW

Answer: (b) Wi-Fi

Description: Short-range wireless networks have a very short range. This type of network is used for applications running in the local environment. Examples of this network are Wi-Fi and Bluetooth.

1. _________ allows us to control electronic components
a) RETful API
b) RESTful API
c) HTTP
d) MQTT
View Answer

Answer: a
Explanation: RETful API that allows us to control electronic components connected to our Intel Galileo Gen 2 board through HTTP requests.

2. MQTT stands for _____________
a) MQ Telemetry Things
b) MQ Transport Telemetry
c) MQ Transport Things
d) MQ Telemetry Transport
View Answer

Answer: d
Explanation: MQTT was known as MQ Telemetry Transport protocol. MQTT is a lightweight protocol that runs on top of the TCP/IP protocol.

3. MQTT is better than HTTP for sending and receiving data.
a) True
b) False
View Answer

Answer: a
Explanation: We want to send and receive data in real time through internet and RESTful API is not the most appropriate option to do this. Instead, we will work on MQTT which is lighter than HTTP.

4. MQTT is _________ protocol.
a) Machine to Machine
b) Internet of Things
c) Machine to Machine and Internet of Things
d) Machine Things
View Answer

Answer: c
Explanation: The MQTT protocol is a machine to machine and Internet of thing connectivity protocol.

5. Which protocol is lightweight?
a) MQTT
b) HTTP
c) CoAP
d) SPI
View Answer

Answer: a
Explanation: MQTT is a lightweight protocol that runs on top of the TCP/IP protocol and works with publish subscribe mechanism.

6. PubNub publishes and subscribes _________ in order to send and receive messages.

a) Network
b) Account
c) Portal
d) Keys
View Answer

Answer: d
Explanation: It is necessary to generate our PubNub publishes and subscribes keys in order to send and receive messages in the network.

7. By clicking which key the PubNub will display public, subscribe, and secret keys.
a) Pane
b) Demo Keyset
c) Portal
d) Network
View Answer

Answer: b
Explanation: Click on Demo keyset pane and PubNub will display public, subscribe, and secret keys. We must copy and paste each of these keys to use them in our code that will publish messages and subscribe to them.

8. The messageChannel class declares the _________ class attribute that defines the key string.
a) command_key
b) command-key
c) commandkey
d) Key_command
View Answer

Answer: a
Explanation: The messageChannel class declares the command_key class attribute that defines the key string that defines what the code will understand as the command.

9. _________ method saves the received arguments in three attributes.
a) __Init
b) Init__
c) __Init__
d) _init_
View Answer

Answer: c
Explanation: __Init__ method saves the received arguments in three attributes with the same names.

10. _________ and _________ saves the publish and subscribe keys that we have generated with the PubNub Admin portal.
a) public_key and subscribe_key
b) Public-key and subscribe-key
c) publickey and subscribekey
d) Key_public and key_subscribe
View Answer

Answer: a
Explanation: Then, the constructor declares two local variables: public_key and subscribe_key. These local variables save the public and subscribe keys that we had generated with the PubNub Admin portal.

11. _________ specifies the function that will be called when there is a new message received from the channel.
a) Reconnect
b) Error
c) Connect
d) Callback
View Answer

Answer: d
Explanation: The call to this message specifies many methods declared in the MessageChannel class
Callback: specifies the function that will be called when there is a new message received from the channel.

12. _________ specifies the function that will be called on an error event.
a) Callback
b) Error
c) Connect
d) Reconnect
View Answer

Answer: b
Explanation: The call to this message specifies many methods declared in the MessageChannel class
Error: specifies the function that will be called on an error event.

13. _________ Specifies the function that will be called when a successful connection with the PubNub cloud.
a) Callback
b) Error
c) Connect
d) Reconnect
View Answer

Answer: c
Explanation: The call to this message specifies many methods declared in the MessageChannel class
Connect: specifies the function that will be called when a successful connection with the PubNub cloud.

14. _________ specifies the function that will be called when a successful re-connection is completed.
a) Callback
b) Error
c) Connect
d) Reconnect
View Answer

Answer: d
Explanation: The call to this message specifies many methods declared in the MessageChannel class
Reconnect: specifies the function that will be called when a successful re-connection is completed with the PubNub cloud.

15. ___________ specifies the function that will be called when the client disconnects.
a) Callback
b) Error
c) Connect
d) Disconnect
View Answer

Answer: d
Explanation: The call to this message specifies many methods declared in the MessageChannel class
Disconnect: specifies the function that will be called when the client disconnects from the PubNub cloud.

Internet of Things (IoT) can be integrated with which of these separate domains:
a. Cloud-based storage and computing.
b. Cyber Physical Systems.
c. Big-data networks.
d. All of these.

Ans:d. All of these.

In the current market scenario, IoT captures the maximum share in which one of these?
a. Industry
b. Security
c. Healthcare
d. Home automation

Ans:a. Industry

Why is IPv6 preferred over IPv4 for IoT implementations?
a. Larger addressing range
b. More security
c. Both a and b
d. Neither a or b

Ans:c. Both a and b

The main function of the IoT Gateway can be summarized as:
a. Forwarding packets between LAN and WAN on the IP layer.
b. Performs application layer functions between IoT nodes and other entities.
c. Enables local, short-range communication between IoT devices.
d. All of these

Ans:a. Forwarding packets between LAN and WAN on the IP layer.

Scalability of IoT means:
a. Expandable/reducible in terms of scale or size.
b. Measurable
c. Increasing/decreasing monetary costs.
d. All of these.

Ans:d. All of these.

Which one of these is the most important factor to be considered in an IoT implementation:
a. Scalability
b. Power efficiency
c. Efficient and scalable addressing schemes
d. All of these

Ans:d. All of these

Which statement is NOT TRUE:
a. IoT WAN connects various network segments.
b. IoT WAN is geographically wide.
c. IoT WAN is organizationally wide.
d. None of these.

Ans:d. None of these.

Which of these statements regarding sensors is TRUE?
a. Sensors are input devices.
b. Sensors can be analog as well as digital
c. Sensors respond to some external stimuli.
d. All of these.

Ans:d. All of these.

Which of these is NOT a feature of Shape Memory Alloys (SMA)?
a. Low density
b. Low strain recovery
c. Biocompatibility
d. Biodegradability

Ans:b. Low strain recovery

Which of these is a part of the Sensing Layer of the IoT Service Oriented Architecture?
a. Service integration
b. Service repository
c. Business logic
d. Data sensing and actuation protocols.

Ans:d. Data sensing and actuation protocols.

MQTT stands for:
a. Message Queue Telemetry Transport
b. Multiple Queue Telemetry Transport
c. Multiple Query Transport Technique
d. Multiple Query Transport Technique

Ans:a. Message Queue Telemetry Transport

AMQP is designed for connecting:
a. Constrained networks
b. LANs and WANs
c. Systems and Business processes
d. None of these

Ans:c. Systems and Business processes

Which modulation scheme is followed by IEEE 802.15.4 standard?
a. BPSK
b. QPSK
c. DSSS
d. All of these

Ans:d. All of these

Which CoAP message transfers response from the server within the acknowledgment message?
a. Separate
b. Confirmable
c. Non-confirmable
d. Piggyback

Ans:d. Piggyback

Collision prevention in 802.15.4 standard is provided by means of:
a. CSMA-CA
b. CSMA-CD
c. ALOHA
d. None of these

Ans:a. CSMA-CA

Which of these is a routing protocol for low power lossy networks over IPv6?
a. RPL
b. OSPF
c. Both a and b
d. None of these

Ans:a. RPL

The basic unit of AMQP data is:
a. A frame
b. A packet
c. A byte
d. A bit

Ans:a. A frame

RPL supports:
a. Message confidentiality
b. Loop detection in the routes
c. Data path validation
d. All of these

Ans:d. All of these

Which statement is TRUE with respect to the IEEE 802.15.4 standard?
a. It is a low data-rate standard.
b. Used for architecting wireless PANs
c. Uses only two layers – PHY and MAC
d. All of these

Ans:d. All of these

LOADng routing uses:
a. AODV
b. DSDV
c. RIPv2
d. OSPF

Ans:a. AODV

The number of channels incorporated in physical layer of the HART standard are:
a. 10
b. 15
c. 20
d. 64

Ans:b. 15

Channel hopping is performed at which HART layer?
a. Physical
b. Data link
c. Network
d. Application

Ans:b. Data link

This process of bypassing radio dead-spots in Z wave is done using a message called
a. Healing
b. Beacon
c. Probe
d. None of these

Ans:a. Healing

The difference between the wired and wireless versions of HART are at the:
a. Network layer
b. Physical layer
c. Data link layer
d. All of these

Ans:d. All of these

WASN stands for:
a. Wireless and Sensor networks
b. Wired and Sensor networks
c. Wireless Ad-hoc Sensor Networks
d. None of these

Ans:c. Wireless Ad-hoc Sensor Networks

Class-2 Bluetooth devices have a range of:
a. 1m
b. 10m
c. 100m
d. 1000m

Ans:b. 10m

SOS in sensor web stands for
a. Sensor of a System
b. System of Sensors
c. Sensor Observation Service
d. None of these

Ans:c. Sensor Observation Service

Which topology is supported by Z wave:
a. Star
b. Mesh
c. Tree
d. All of these

Ans:d. All of these

QoS guarantees in WSNs include:
a. Offering guarantees in terms of bandwidth, delay, jitter
b. Offering guarantees in terms of packet loss probability.
c. Offering guarantees in terms of Limited bandwidth, unpredictable changes in RF channel characteristics.
d. All of these

Ans:d. All of these

The WSN nodes are prone to:
a. Malicious attacks
b. Eavesdropping
c. Interference
d. All of these

Ans:d. All of these

With respect to WSN coverage problems, the OGDC algorithm is an acronym for:
a. Optimal Geographic Density Control
b. Optimal Geographic Distance Control
c. Optimal Geographic Distance Coverage
d. Optimal geographic Density Coverage

Ans:a. Optimal Geographic Density Control

A crossing with respect to WSN coverage is _ if it is in the interior region of at least one node’s coverage disk.
a. Partially covered
b. Covered
c. Not covered
d. Isolated

Ans:b. Covered

A PIR Sensor stands for:
a. Proximity Infra-Red
b. Passive Infra-Red
c. Picture Infra-Red
d. None of these

Ans:b. Passive Infra-Red

WMSNs stand for:
a. Wired Multimedia Sensor Networks
b. Wireless Multimedia Sensor Networks
c. Wireless Mobile Sensor Networks
d. Wireless Machine Sensor Network

Ans:b. Wireless Multimedia Sensor Networks

UAV-VANETS link-up may be used for:
a. visual guidance
b. Data-muling
c. Coverage enhancement
d. All of these

Ans:d. All of these

M2M stands for:
a. MAC to MAC communication
b. Machine to MAC communication
c. Machine to machine communication
d. MAC to machine communication

Ans:c. Machine to machine communication

In WSN area coverage problem, which is TRUE?
a. Energy-efficient random coverage
b. Connected random coverage
c. A network is connected if any active node can communicate with any other active nodes
d. All of these

Ans:d. All of these

In a M2M ecosystem, Internet service providers:
a. Provide their infrastructures for M2M device communications.
b. are responsible for devices providing raw data.
c. is an individual or company what utilizes M2M applications.
d. None of these

Ans:a. Provide their infrastructures for M2M device communications.

With respect to stationary sensor networks, which of these points apply?
a. Easy deployment
b. Node can be placed in an optimized distance
c. Easy topology maintenance
d. All of these

Ans:d. All of these

High-end M2M nodes have:
a. Mobility
b. QoS guarantees
c. Low density deployment
d. All of these

Ans:d. All of these

A hardware code, before uploading to an embedded processor board first needs to be:
a. Verified and compiled
b. Executed
c. Both a and b
d. None of these

Ans:a. Verified and compiled

Why interoperability is required?
a. Heterogeneous wireless communication protocols
b. Different programming languages
c. Different control models
d. All of the above

Ans:d. All of the above

What is the function for reading humidity from DHT sensor from Arduino?
a. dht.readHumidity()
b. dht.readTemperature()
c. dht.begin()
d. d. dht(pin,DHT22)

Ans:a. dht.readHumidity()

Device interoperability problem is between
a. Two devices
b. A device and an user
c. Both (a) and (b)
d. None of the above

Ans:a. Two devices

Which is the following is not an Actuator?
a. Servo motor
b. Stepper motor
c. DHT
d. Relay

Ans:c. DHT

Which of the following is not a sensor?
a. Barometer
b. Light Dependent Resistor (LDR)
c. DHT
d. Relay

Ans:d. Relay

What is the servo library command to move the shaft of Servo motor back and forth across 180 degree?
a. Knob()
b. Sweep()
c. write()
d. detach()

Ans:b. Sweep()

The code written in Arduino IDE is referred to as:
a. Script
b. Block
b. Sweep()
d. Arduino Script

Ans:b. Sweep()

Which of the following library functions can be used to generate a random number in Arduino?
a. randomize()
b. ran()
c. rand()
d. random()

Ans:d. random()

Which pin of Arduino should be connected with the pin 3 of the DHT sensor?
a. Pint 5V
b. Pin 3.3V
c. Pin GND
d. None of the these

Ans:d. None of the these

By default, the GPIO pins in Raspberry Pi are configured as?
a. Input except pins 14 and 15
b. Output except pins 14 and 15
c. Bcm
d. GPIO

Ans:a. Input except pins 14 and 15

Which of the following datatype is correct for the object below?
D = [‘python’, 3.43, ‘p’, 100]
a. Array
b. Dictionary
c. Tuple
d. List

Ans:b. Dictionary

What does the method readline() return:
a. One line
b. One byte
c. One character
d. Bool

Ans:a. One line

What is the maximum peripheral current draw allowed in Raspberry pi 3?
a. 1200mA
b. 700mA
c. 500mA
d. 100mA

Ans:a. 1200mA

Data collected by Raspberry Pi from the sensor can be
a. Processed in Raspberry Pi
b. Sent to other devices connected to the network
c. Used to control/activate other devices in the network
d. All of the above

Ans:d. All of the above

Relay is a kind of:
a. Sensor
b. Actuator
c. Hub
d. Router

Ans:b. Actuator

What are the mode/modes used for addressing the pins in Raspberry Pi?
a. GPIO
b. BCM
c. GPIO and BCM
d. GPIO, BCM and CAN

Ans:c. GPIO and BCM

Which of the following variants of Raspberry Pi has an inbuilt wi-fi?
a. Raspberry Pi 2
b. Raspberry Pi 3
c. Raspberry Pi A+
d. Raspberry Pi Zero

Ans:b. Raspberry Pi 3

Internet of Things refers to:
a. Interconnection of devices in a network
b. Exchange of data between devices in a network
c. An ecosystem of devices, accessible through internet
d. All of the above

Ans:d. All of the above

IoT devices must have:
a. A USB port
b. A unique identification
c. Wired connectivity
d. All of the above

Ans:b. A unique identification

Server is a:
a. Computer
b. Any device/program which serves or responds to the request from client
c. A data center
d. Cloud

Ans:b. Any device/program which serves or responds to the request from client

The split() function in Python programming language breaks the string on the basis of:
a. Blank Space
b. Comma
c. Any specified delimiter
d. Hyphen

Ans:c. Any specified delimiter

Bind() function in Python socket programming is used to:
a. Specify the port for service on the specified host
b. Read data from the socket
c. Send data to the socket
d. Initiate the connection

Ans:a. Specify the port for service on the specified host

Application program interface (API) used between data and control planes in SDN is known as:
a. Northbound API
b. Eastbound API
c. Southbound API
d. Westbound API

Ans:c. Southbound API

When does a switch send PAKCET-IN message to a controller in SDN:
a. Flow-rule associated with a received flow does not exist
b. All the time
c. After deleting a flow-rule
d. None of the above

Ans:a. Flow-rule associated with a received flow does not exist

In SDN, does the control overhead increase compared to the traditional network:
a. Depends on application and network topology
b. Yes, always
c. Not at all
d. Depends on OpenFlow protocol

Ans:a. Depends on application and network topology

One of the advantages of SDN-based sensor network is:
a. Real-time programmability
b. No need to replace any node
c. Both a & b
d. None of the above

Ans:a. Real-time programmability

Application program interface (API) used between application and control planes is known as:
a. Northbound API
b. Eastbound API
c. Southbound API
d. Westbound API

Ans:a. Northbound API

An SDN Controller can be placed based on:
a. Hierarchical manner
b. Star-topology
c. Mesh topology
d. All of the above

Ans:d. All of the above

Typically, __ protocol is used in low-rate wireless PANs:
a. IEEE 802.15.4
b. IEEE 802.11
c. IEC 6250
d. None of the above

Ans:a. IEEE 802.15.4

Using SDN, the following can be managed:
a. Network partition
b. Network matching
c. Load balancing
d. All of the above

Ans:d. All of the above

From the below given options, which is not a characteristic of cloud computing?
a. Low management effort
b. Low level generalization of computation
c. On-demand network access
d. Configurable computing resources

Ans:b. Low level generalization of computation

Pre-configure facility for allocation of virtualized resources comes under
a. Availability and reliability
b. Scalability and elasticity
c. Manageability and interoperability
d. Measured Services

Ans:c. Manageability and interoperability

Service Management mainly focusses on
a. Importance to desired outcomes of customers
b. Importance to desired outcomes of organizations
c. Both (a) and (b)
d. none of the above

Ans:a. Importance to desired outcomes of customers

Broad network access in cloud deals with
a. Dynamic allocation for scale out
b. Recorded resource usage
c. Availability of cloud resources over the network
d. All of the above

Ans:c. Availability of cloud resources over the network

Billing information is calculated using
a. Accounting Records only
b. Billing rules and Accounting records
c. Billing rules, Accounting records and Resource prices
d. None of the above

Ans:c. Billing rules, Accounting records and Resource prices

Integrity in data security is :
a. Detecting unauthorized data modification
b. Sending secure data to cloud
c. Preserving the privacy of data
d. None of the above

Ans:a. Detecting unauthorized data modification

Cloud Analyst provides
a. Support for large scale cloud applications
b. GUI based control
c. Flexible and repeatable environment
d. All of these

Ans:d. All of these

GreenCloud Simulator is designed based on
a. NS-3
b. NS-2
c. CloudSim
d. DCSim

Ans:b. NS-2

Which of the following is not a cloud simulator?
a. CloudSim
b. NS-3
c. DCSim
d. GroudSim

Ans:b. NS-3

What is the purpose of floating IP in Openstack?
a. To connect the instance with the external network
b. To interconnect among instances
c. To connect among instances inside a same network
d. None of them

Ans:a. To connect the instance with the external network

We normally take snapshot in Openstack, _.
a. After the installation of an instance
b. Before the installation of an instance
c. It is an inbuilt image in Openstack
d. It should be downloaded from the internet

Ans:a. After the installation of an instance

Sensor-Cloud deals with
a. Sensor-for-Service
b. Sensor-as-a-Service
c. Sensor-in-Cloud
d. None of these

Ans:b. Sensor-as-a-Service

Which of the following statement is true in sensor-cloud
a. End user procures sensors and lend these to sensor-cloud service provider
b. Sensor-cloud is based only on dumping the sensor data to the cloud
c. Single sensor nodes is shared dedicatedly with only one end user
d. None of these

Ans:d. None of these

What are the three main issues faced by cloud while handling IoT data?
a. speed, volume, bandwidth
b. speed, quality of service, volume
c. volume, latency, bandwidth
d. none of the above

Ans:c. volume, latency, bandwidth

Why data volume is a problem in IoT-based cloud computing?
a. because data are encrypted and hard to analyze
b. because data coming from IoT devices are always in raw format and difficult to store
c. because the density of IoT devices is increasing each day and in turn the volume of generated data is growing very fast
d. because IoT device density is decreasing each day and in turn the volume of generated data are decreasing very fast

Ans:c. because the density of IoT devices is increasing each day and in turn the volume of generated data is growing very fast

If the time-sensitive data are sent to cloud for analysis, the latency will be __
a. Increased
b. Decreased
c. neither increase nor decrease
d. first increase, then decreased

Ans:a. Increased

What is a good approach to reduce latency?
a. Analyzing data close to the data source
b. Analyzing data in cloud
c. Increasing number of nodes
d. Decreasing number of nodes

Ans:a. Analyzing data close to the data source

What are less time-sensitive data?
a. Data which can be analyzed after seconds or minutes
b. Data which should be analyzed within fraction of a second
c. Data which can be wait for hours, days, weeks
d. Data which can be wait for months

Ans:a. Data which can be analyzed after seconds or minutes

How fog provide better privacy to industries and companies?
a. By providing the facility to store confidential data in their local servers
b. By providing more secure communication system
c. By providing a secured VPN network
d. All of the above

Ans:a. By providing the facility to store confidential data in their local servers

Which of these can be considered as the skeleton for smart cities?
a. Buildings
b. Transportation
c. Banks
d. Sensors

Ans:a. Buildings

Which of these can be considered as the sensory organs for smart cities?
a. Buildings
b. Transportation
c. Banks
d. Sensors

Ans:d. Sensors

Smart Agriculture incorporates:
a. Alert generation in case of above-threshold pollutants in the air or water.
b. Scheduling harvesting and arranging proper transfer of harvests to
warehouses or markets.
c. Both the above
d. None of these

Ans:b. Scheduling harvesting and arranging proper transfer of harvests to
warehouses or markets.

Heterogeneity for IoT in smart cities stands for:
a. Integration of varying hardware platforms and specifications.
b. Integration of different radio specifications.
c. Integration of various software platforms.
d. All of these

Ans:d. All of these

Which of these can be categorized as AI based mathematical model for data fusion?
a. CNN
b. Recursive methods
c. Bayesian analysis
d. Belief networks

Ans:a. CNN

Which of these connects cable-based networks with wireless networks for increased sharing of media, control and access and can share network media resources?
a. UPnP
b. DLNA
c. LAN
d. WiFi

Ans:b. DLNA

Which of these is NOT a feature of VANETs?
a. High Dynamic Topology
b. High transmission and computation capability
c. Stable connectivity
d. Predictable mobility pattern

Ans:c. Stable connectivity

X-10 protocol is characterized by:
a. Low-speed and low data rate.
b. Low speed and high data rate
c. High speed and low data rate
d. High speed and high data rate

Ans:a. Low-speed and low data rate.

The V2X paradigm is not restricted to a single source information provider.
a. True
b. False
c. Sometimes True, mostly False
d. Sometimes False, mostly True

Ans:a. True

TCP/IP fails in V2X because:
a. TCP/IP is designed mainly for handling information exchange between a single pair of entities.
b. Information exchanges in TCP/IP are dependent on the location of data.
c. TCP/IP can only identify the addresses of endpoints, which alone is not useful for content distribution.
d. All of these

Ans:d. All of these

Net metering depends on –
a. Energy consumed by the consumers and energy generated by the consumers
b. Energy consumed by the consumers and energy supplied back to the grid
c. Only energy consumed by the consumer
d. None of the above

Ans:b. Energy consumed by the consumers and energy supplied back to the grid

Smart grid enables –
a. Distributed energy management
b. Centralized energy management
c. Either of these
d. None of these

Ans:a. Distributed energy management

In smart grid, gateways communicate using –
a. IEEE 802.15.4
b. IEEE 802.15.6
c. 6LowPAN
d. IEEE 802.11

Ans:d. IEEE 802.11

Full form of SANETs –
a. Sensors and Actions Networks
b. Sensors and Actuator Networks
c. Smart and Active Networks
d. None of these

Ans:b. Sensors and Actuator Networks

In IIoT environment, networks can
a. Communicate with each other, external environment and people.
b. Communicate with each other, but not with external environment and people.
c. Does not communicate with each other, but communicates with external
environment.
d. Communicate with each other, but not with people.

Ans:a. Communicate with each other, external environment and people.

IIoT is mainly focused on
a. Convenience of individuals
b. Efficiency, safety and security of operation and individuals.
c. Efficiency of the system.
d. Data security.

Ans:b. Efficiency, safety and security of operation and individuals.

What is the key technology to enable V2V and V2R communication?
a. Short Range Communication
b. Dedicated Short Range Communication
c. Long Range Communication
d. Medium Range Communication

Ans:b. Dedicated Short Range Communication

What do you mean by service management in IIoT?
a. Implementation and management of the quality of services
b. Collection of services
c. Features extracted from data received
d. Services which do not meet the demand of end-users.

Ans:a. Implementation and management of the quality of services

Traditional RDBMS unable to process –
a. Structured data
b. Unstructured data
c. Both structured and unstructured data
d. None of these

Ans:b. Unstructured data

Structured data is managed in database using –
a. .NET Framework
b. Structured Query Language
c. Normal Language Processing
d. All of these

Ans:b. Structured Query Language

Mathematical model, which represents the relationship between variables, is termed as –
a. Mathematical model
b. Statistical model
c. Variability model
d. None of the above

Ans:b. Statistical model

ANOVA has –
a. Two types
b. Three Types
c. Four Types
d. Any finite value

Ans:b. Three Types

Which of the following option supports a long-range communication
a. ZigBee
b. GPRS
c. Bluetooth
d. All of the above

Ans:b. GPRS

The primary challenges of an embedded operating system for WSN are
a. Small memory footprint
b. Low power and computing capability
c. Lack hardware parallelism
d. All of these

Ans:d. All of these

What is the network topology of Ambusens WBAN devices
a. Bus topology
b. Star Topology
c. Mesh Topology
d. None of the above

Ans:b. Star Topology

Which communication protocol is used between sensor devices in Ambusens WBAN system
a. 3G
b. WLAN/Wi-fi
c. IEEE 802.15.4
d. IEEE 802.15.1

Ans:d. IEEE 802.15.1

Which privacy-aware scheme is used in Ambusens cloud framework
a. Hashing and reverse hashing of patient physiological data
b. Patient identity masking by hashing-based mechanism
c. Hashing and reverse hashing of physiological sensor ID
d. All of the above

Ans:b. Patient identity masking by hashing-based mechanism

Activity monitoring:
a. Provides better quality of life
b. Provides information accurately in a reliable manner
c. Provides continuous monitoring support.
d. All of these

Ans:d. All of these

Which of these sensors can be most appropriately used for activity monitoring in wearables?
a. Accelerometer
b. Cameras
c. LIDARs
d. LED

Ans:a. Accelerometer

Statistical methods of activity recognition can work on:
a. Videos
b. Images
c. Scalar sensor data
d. All of these

Ans:c. Scalar sensor data

Which indicates the communication between internetworking devices and applications.

a. Internet

b. Communication Devices

c. Internet of things

d. None of the above

Ans:c. Internet of things

Which indicates the computations at device level before the computed data is communicated through internet
a. Computing
b. Edge Computing
c. Communication
d. Internetworking

Ans:b. Edge Computing

The levels of IoT are called as
a. Nodes
b. Tires
c. Items
d. Blocks

Ans:b. Tires

Which are the devices that sense the physical environments
a. Control units
b. Sensors
c. Firmware
d. PDU’s

Ans:b. Sensors

Which IoT block contains the MCU or Customer chip
a. Control units
b. Sensors
c. Firmware
d. PDU’s

Ans:a. Control units

REST stands for
a. Raspbian state transfer
b. Raspberry state transfer
c. Representational state transfer
d. Raswik state transfer

Ans:c. Representational state transfer

Which is an operating system for IOT
a. Contiki
b. RIOT
c. Spark
d. Allyoyn

Ans:a. Contiki

Which is an open data platform with open API
a. Thingspeak
b. Nimbits
c. IoT toolkit
d. Site Where

Ans:a. Thingspeak

Which provides complete platform for managing IoT Devices
a. Thingspeak
b. Nimbits
c. IoT toolkit
d. Site Where

Ans:d. Site Where

1. The ___ works best when handling data in byte sized packages.

a. 8031 b. 8091 c. 8071 d. 8081

Ans: a

2. _____ displays commonly contain LED segments arranged as an 8.

a. Seven segment display b. intelligent LCD display c. 4X4 display d. 2X2 display

Ans: a

3. In intelligent LCD display, D0 to D7 are located at

a. 1 to 7 pins b. 7 to 14 pins c. 2 to 8 pins d. 8 to 16 pins

Ans: b

4. The ___ display contains two internal byte-wide registers.

a. seven segment display b. intelligent LCD display c. 4X4 display d. 2X2 display

Ans: b

5. ___ displays include incandescent and, more likely, LED indicators.

a. single light b. double light c. single character d. intelligent alphanumeric

Ans: a

6. ____ displays include numeric and alphanumeric arrays.

a. single light b. double light c. single character d. intelligent alphanumeric

Ans: c

7. _____ displays are equipped with a built-in microcontroller.

a. single light b. double light c. single character d. intelligent alphanumeric

Ans: d

8. 20 characters per line display can be possible in

a. Seven segment display b. intelligent LCD display c. 4X4 display d. 2X2 display

Ans: b

9. Control sequence of D/A conversion is

a. CS then WR b. WR then CS c. CS then WR then RD d. WR then RD

Ans: a

10. Control sequence of A/D conversion is

a. CS then WR b. WR then CS c. CS then WR then RD d. WR then RD

Ans: c

11. A/D conversion time is

a. 1 μs b. 2 μs c. 3 μs d. 4 μs

Ans: a

12. For a 1000-hertz wave, S could be ____ samples.

a. 50d b. 100d c. 150d d. 200d

Ans:

13. D/A conversion time is

a. 3 μs b. 4 μs c. 5 μs d. 6 μs

Ans: d

14. The frequency of the counted pulse train is

a. unknown frequency = counter / timer

b. unknown frequency = counter X timer

c. unknown frequency = counter – timer

d. unknown frequency = counter + timer

Ans: a

15. If the counter counts 200 pulses over an interval of 0.1 second generated by the timer, the frequency is

a. 200 Hz b. 2000Hz c. 20000Hz d. 200000Hz

Ans: b

16. The frequency of the pulse value in D/A conversion is

a. UF = 1 / (wave time high X 2)

b. UF = 1 / (wave time high + 2)

c. UF = 1 / (wave time high – 2)

d. UF = 1 / (wave time high / 2)

Ans: a

17. Reference voltage value in D/A conversion is

a. ±8V b. ±10V c. ±12V d. ±14V

Ans: a

18. A/D converters use ____ types.

a. SAR b. flash c. magnetic d. bubble

Ans: b

19. A/D converters use ____ types.

a. SAR b. flash c. magnetic d. bubble

Ans: b

20. For a 1000-hertz wave, S could be ____ samples.

a. 50d b. 100d c. 150d d. 200d

Ans: d

21. The ___ display contains two internal byte-wide registers.

a. Seven segment display b. intelligent LCD display c. 4X4 display d. 2X2 display

Ans: b

22. The 8051 external input pin is

a. INT1 b. DPH c. DPL d. IE

Ans: a

23. The 8051 external input pin is

a. INT0 b. DPH c. DPL d. IE

Ans: a

24. Reference voltage value in D/A conversion is

a. ±8V b. ±10V c. ±12V d. ±14V

Ans: a

25. A/D conversion time is

a. 1 μs b. 2 μs c. 3 μs d. 4 μs

Ans: a

26. In intelligent LCD display, D0 to D7 are located at

a. 1 to 7 pins b. 7 to 14 pins c. 2 to 8 pins d. 8 to 16 pins

Ans: b

27. _____ displays commonly contain LED segments arranged as an 8.

a. Seven segment display b. intelligent LCD display c. 4X4 display d. 2X2 display

Ans: a

28. ____ is not suitable for the interchange of data between 8051 microcontrollers.

a. mode 0 b. mode 1 c. mode 4 d. mode 3

Ans: d

29. Data transmission using modes 2 and 3 features ___ bits per character.

a. 8 b. 9 c. 10 d. 11

Ans: d

30. Which serial data communication mode is multiprocessor 9-bit UART?

a. mode 0 b. mode 1 c. mode 2 d. mode 4

Ans: c

Which of the following is a synchronous serial interface protocol?

a. SPI b. I2C c. UART d. Both (a) and (b)

Ans: d

Synchronous interfaces make use of clock signal? State True or False

a. True b. False

Ans: True

Which of the following serial protocol is used for on-board serial communication?

a. USB b. I2C c. Wifi d. Bluetooth

Ans: b

Which of the following protocol make use of 7 bit address for its operation?

a. I2C b. SPI c. RS232 d. RS485

Ans: a

Which of the following interface is used to 127 slave device to the master device?

a. SPI b. I2C c. RS232 d. RS485

Ans: b

RS232 protocol makes use of clock signal for sending data? True or False

a. True b. False

Ans: b

Which serial communication interface is used to connect modems and for non networked communication between computers and other devices?

a. SPI b. I2C c. UART d. USB

Ans: C

How many wires are used to connect I2C devices?

a. 1 wire b. 2 wires c. 3 wires d. 4 wires

Ans: b

Which of the following interface was developed by Motorola Company?

a. I2C b. SPI c. USB d. Bluetooth

Ans: b

Which of the following make use of 4 wires for its operation?

a. USB b. CAN c. SPI d. I2C

Ans: c

Which of the following is a full duplex communication interface?

a. I2C b. 1 – Wire c. SPI

Ans: c

Which of the following is true about MOSI signal?

a. Signal Line carrying the clock signal

b. Signal line for slave select

c. Signal line carrying the data from master to slave device

d. Signal line carrying the data from slave to master device

Ans: c

Which of the following supports only point to point communication and not suitable for multi drop communication

a. RS485 b. RS232 c. RS422 d. Rs484

Ans: b

Which of the following is a low cost, low power, short range wireless communication for voice and data

a. Wi-Fi b. Infrared c. Zigbee d. Bluetooth

Ans: d

Which of the following is true about Opto-Coupler?

a. Optocoupler is used as only input device

b. Optocoupler is used as only output device

c. Optocoupler is used in both input and output circuitry

d. None of these

Ans: c

Which of the following is true for Common Anode 7 segment displays?

a. All anodes are connected to ground

b. All anodes are connected to Power supply

c. All cathodes are connected to Power Supply

d. None of these

Ans: b

LED stands for

a. Light Emitting Display b. Light Emitting Diode

c. Light Energy Device d. Light Energy Display

Ans. b

Which of the following is true for a Relay?

a. Relay is a Mechanical device b. Relay is Electric device

c. Relay is Electro – Mechanical device d. None of these

Ans: c

Which of the following is true about Buzzer?

a. Buzzer is an output device b. Buzzer is an input device

c. Buzzer is both input and out device d. None of these

Ans: a

Which device generates discrete displacement in response to dc electrical signals?

a. LED b. Buzzer c. 7 segment Display d. Stepper Motor

Ans: d

A task owning a mutex, cannot be ______

a. added b. modified c. released d. deleted

Ans: d

Array of mailboxes can be considered as

a. pipes b. semaphore c. timer d. message queue

Ans: d

Mutex stands for

a. mutual text b. mutual exclusion c. mutual task d. mutual timer

Ans: b

Which occurs when two or more tasks wait for a resource being held by another task

a. deadlock b. live lock c. semaphore d. starvation

Ans: a

Mutual exclusion problem occurs between

a. two disjoin process that not interact

b. processes that share resources

c. processes that do not use the same resource

d. processes have priority

Ans: b

What problem is solved by dijkstras bankers algorithm?

a. mutual exclusion b. deadlock recovery

c. deadlock avoidance d. cache coherence

Ans: b

Mutex is a special

a. count semaphore b. binary semaphore

c. task semaphore d. time semaphore

Ans: b

A common use of ____ is to serve as the program memory for a micro processor

a. ROM b. EPROM c. EEPROM d. Flash memory

Ans: c

To obtain better memory utilization dynamic loading ids used with dynamic loading a routine is not loaded until it is called for implementing dynamic loading

a. special support from hardware is essential

b. special support from operating system is essential

c. special support from both hardware and operating system are essential

d. user programs can implement dynamic loading without any special support from the operating system or the hardware

Ans: d

One common use of a ______ timer is to enable an embedded system to restart itself in case of a failure

a. watchdog b. special c. reaction d. proactive

Ans: a

Which is an extension of EEPROM

a. RAM b. SRAM c. Flash memory d. DRAM

Ans: c

What is really more of a bus interface architecture the DRAM architecture

a. EDORAM b. Rambus DRAM c. SDRAM d. FPMDRAM

Ans: b

What are used to measure the elapsed time of events

a. timers b. counters c. schedulers d. processes

Ans: a

What is an extremely common peripheral devices that can measure time intervals

a. counters b. timers c. schedulers d. process

Ans: b

To use a _______ , we must configure its inputs and monitors its outputs

a. counters b. timers c. schedulers d. process

Ans: b

A ______ timer is an application that measures the time a person takes to respond to a visual or audio stimulus

a. watchdog b. special c. reaction d. proactive

Ans: c

System’s _____ interrupt response time has to be considered while evaluating the performance of an operating system embedded software

a. best-case b. worst-case c. average-case d. all cases

Ans: b

ISR stands for

a. Interface service routine b. Interrupt Service Runner

c. Interrupt Service Routine d. Interface Standard Routine

Ans: c

When a process makes a system call, its mode change from

a. user to kernel b. kernel to user c. restricted to process d. unrestricted to restricted

Ans: a

The technique that allows only one user to work with a file at a particular time is called

a. semaphore b. critical region c. locking d. dedicated mode

Ans: c

What is a hardware signal that informs the CPU that an important event has occurred

a. event b. signal c. process d. interrupt

Ans: d

When interrupt occurs , CPU saves its context and jumps to the _______

a. ISR b. API c. IP d. ITS

Ans: a

The maximum time for which interrupts are disabled + time to start the execution of the first instruction in the ISR is called_______

a. Interrupt response time b. Interrupt recovery time c. Interrupt latency d. Interrupt handler

Ans: c

Time between receipt of interrupt signal and starting the code that handles the interrupt is called_____

a. Interrupt response time b. Interrupt recovery time c. Interrupt latency d. Interrupt handler

Ans: a

Time required for CPU to return to the interrupted code/ highest priority task is called

a. Interrupt response time b. Interrupt recovery time c. Interrupt latency d. Interrupt handler

Ans: b

In a preemptive kernel , response time =

a. Interrupt recovery time + time to save CPU registers context

b. Interrupt respond time + time to save CPU registers context

c. Interrupt handler + time to save CPU registers context

d. Interrupt latency + time to save CPU registers context

Ans: d

Principle of RTOS is

a. write short interrupt routines b. you do not need tasks for priority

c. you need tasks for inheritance d. consider turning time-slicing off

Ans: a

Which causes more task switched and therefore cuts throughput.

a. time-slicing b. encapsulation c. priority d. routines

Ans: a

Design And Analysis Of Algorithms(All Types Multiple Choice Questions)

2022-04-01T11:56:00.000+05:30

1. Each of the cities is connected to another city by a road a complete ___ is obtained.

Ans. Decrease-by-one

2. The worst-case efficiency of the brute force algorithm is ___.
Ans. ө(n²)

3. The searching requires ___ comparisons to in the worst case when the array is sorted first.
Ans. [log2 n] +1

4. Gaussian elimination is an algorithm for solving systems of ___ equations.
Ans. Linear

5. In Gaussian elimination we make the ___ coefficient matrix zero.
Ans. Lower triangular

6. Gaussian elimination can be used to find the ___ of a matrix.
Ans. Rank

7. An AVL tree is a ___ tree.
Ans. Binary search

8. The ___ is the mirror image of the RL-rotation.
Ans. LR-rotation

9. The two nodes of 2-3 tree are ___ and ___.
Ans. 2-node, 3-node

10. ___ heap construction algorithm is less efficient than its counterpart.
Ans. Top-down

11. A heap can be defined as ___ with keys assigned to its nodes.
Ans. Binary trees

12. The time efficiency of heapsort is ___ in both worst and average cases.
Ans. O(n log n)

13. Greatest common divisor can be computed easily by ___.
Ans. Euclid’s algorithm

14. The problem of counting graph’s paths can be solved with an algorithm for an appropriate power of its ___.
Ans. Adjacent matrix

16. Input enhancement is based on ___ the instance.
Ans. Preprocessing

17. The cities are represented by ___ and the roads between them are shown as edges.
Ans. Subset

18. Collision occurs when a hash function maps two or more keys to the ___.
Ans. Same hash value

19. When the interval between probes is computed by another hash function it is ___.
Ans. Double hashing

20. As the ___ increases the height of the tree decreases thus speeding access.
Ans. Branching factor

21. Access time increases slowly as the number of records ___.
Ans. Increases

22. The insertions in a B-Tree start from a ___.
Ans. Leaf node

23. Sorting is an example of input enhancement that achieves ___.
Ans. Time efficiency

24. Input enhancement is to ___ the input pattern.
Ans. Preprocess

25. In Horspool’s algorithm, the characters from the pattern are matched ___.
Ans. Right to left

26. The two heuristics in the Boyre-Moore algorithm are ___ and ___.
Ans. Good suffix and bad character shift

27. Each slot of a hash table is often called a ___.
Ans. Bucket

28. The information which is used to place the elements at proper positions is the accumulated sum of frequencies which is called ___.
Ans. Distribution

29. The ___ and ___ are the two approaches to dynamic programming.
Ans. Top-down, bottom-up

30. ___ is a technique to store answers to sub-problems in a table.
Ans. Memoization

31. The ___ algorithm is similar to the dynamic approach.
Ans. Divide and conquer

32. ___, a mathematician, invented the Principle of Optimality.
Ans. Richard Ernest Bellman

33. All optimization problems tend to minimize cost, time and maximizing ___.
Ans. Profits

34. ___are node-based data structures used in many system programming applications for managing dynamic sets.
Ans. Binary search trees

35. The Insertion, deletion and search operations of a binary search tree has an average-case complexity of ___.
Ans. O(log n)

36. The time taken to perform operations on a binary search tree is directly proportional to the ___ of the tree.
Ans. Height

37. The ___ expresses the problem using its sub-instances.
Ans. Recurrence relation

38. ___ is an NP-hard optimization problem.
Ans. Bounded Knapsack problem

39. The Knapsack problem minimizes the total ___ and maximizes the total value.
Ans. Weight

40. The goal of using ___ is to solve only the subproblems which are necessary.
Ans. Memory functions

41. Memory functions use a dynamic programming technique called ___ in order to reduce the inefficiency of recursion that might occur.
Ans. Memoization

42. Memory functions method solves the problem using ___ approach.
Ans. Top-down

43. To carry out an insertion sort, begin at the ___ most element of the array.
Ans. Left

44. The asymptotic running time when we first run to calculate the nth Fibonacci number is ___.
Ans. O(n)

45. To compute the nth Fibonacci number we followed the ___ dynamic approach.
Ans. Bottom-up

46. DFS uses the ___ technique.
Ans. Backtracking

47. Theoretically, the travelling salesman problem can always be solved by specifying all ___ Hamiltonian circuits.
Ans. Combinatorial

48. Binomial coefficients are a study of ___.
Ans. Combinatorics

49. Both Warshall’s and Floyd’s algorithms have the run time as ___.
Ans. θ(n³)

50. Warshall’s algorithm is used to solve ___ problems.
Ans. Transitive closure

51. Floyd’s algorithm is used to solve ___ problems.
Ans. Shortest path

52. The ___ is greedy in the sense that at each iteration it approximates the residual possible by a single function.
Ans. Pure greedy algorithm

53. A greedy strategy usually progresses in a ___ fashion.
Ans. Top-down

54. The ___ is obtained by selecting the adjacent vertices of already selected vertices.
Ans. Minimum spanning tree

55. Each ___ generated by prim’s algorithm is a part of some other minimum spanning tree.
Ans. Sub-tree

56. The greedy strategy in prim’s algorithm is greedy since the tree is added with an edge that contributes the ___ amount possible to the tree’s weight.
Ans. Minimum

57. In Kruskal’s algorithm if the graph is not connected, then the algorithm yields a___.
Ans. Minimum spanning forest

58. The Union-Find data structure is helpful for managing ___ which is vital for Kruskal’s algorithm.
Ans. Equivalence classes

59. Correctness of Kruskal’s algorithm can be proved by saying that the constructed spanning tree is of ___.
Ans. Minimal weight

60. Dijkstra’s algorithm solves the single-source ___ problem for a tree.
Ans. Shortest path

61. The algorithm finds the path with the lowest cost between the ___ vertex and every other vertex.
Ans. Originating

62. The time complexity of Dijkstra’s algorithm can be improved for ___ graphs.
Ans. Sparse

63. Huffman codes are digital ___ codes.
Ans. Data compression

64. The Huffman Encoding scheme falls in the category of ___.
Ans. Variable-length encoding

65. Static Huffman coding is done with the help of ___ tables.
Ans. Statistical symbol frequency

66. Principle of ___ is defined as a basic dynamic programming principle that helps us to view problems as a sequence of subproblems.
Ans. Optimality

67. The choices made in a greedy algorithm cannot depend on ___ choices.
Ans. Future

68. ___ means calculating the minimum amount of work required to solve the problem.
Ans. Lower – bound

69. Trivial lower bound is obtained by the count of the input data that the algorithm reads and the output it produces.
Ans. True

70. ___ method defines the lower bound of an algorithm based on the number of comparisons the algorithm makes.
Ans. Information-theoretic

71. We can implement Backtracking by constructing the ___.
Ans. State-space tree

72. Backtracking, in the ___ case, may have to generate all possible candidates in a problem state that is growing exponentially.
Ans. Worst

73. The n-Queens problem, the ___ circuit and the Subset-Sum problem are some examples of problems that can be solved by Backtracking.
Ans. Hamiltonian

74. ___ organizes details of all candidate solutions and discards large subsets of fruitless candidate solutions.
Ans. Branch and Bound

75. A ___ is a solution that satisfies all the constraints of a problem.
Ans. Decreases

2022-04-01T11:54:00.002+05:30

1. Software design yields ______ levels of results.

A. 2
B. 3
C. 4
D. 5

View Answer

Ans : B

Explanation: Software design yields three levels of results: Architectural Design, High-level design, Detailed Design.

2. Which of the following is not an Advantage of modularization?

A. Smaller components are easier to maintain
B. Concurrent execution can be made possible
C. Program cannot be divided based on functional aspects
D. Desired level of abstraction can be brought in the program

View Answer

Ans : C

Explanation: Program cannot be divided based on functional aspects is not an Advantage of modularization.

3. How many type of cohesion are there in software design?

A. 5
B. 6
C. 7
D. 8

View Answer

Ans : C

Explanation: There are seven types of cohesion: Co-incidental cohesion, Logical cohesion, Temporal Cohesion, Procedural cohesion, Communicational cohesion, Sequential cohesion, Functional cohesion.

4. Which of the following defines the degree of intra-dependability within elements of a module?

A. Cohesion
B. Coupling
C. Design Verification
D. None of the above

View Answer

Ans : A

Explanation: Cohesion is a measure that defines the degree of intra-dependability within elements of a module.

5. When multiple modules share common data structure and work on different part of it, it is called ___________.

A. Common coupling
B. Share coupling
C. Data coupling
D. Stamp coupling

View Answer

Ans : D

Explanation: When multiple modules share common data structure and work on different part of it, it is called stamp coupling.

6. Which tool is use for structured designing ?

A. Program Chart
B. Structure chart
C. Module Chart
D. All of the above

View Answer

Ans : B

Explanation: A Structure Chart (SC) in software engineering and organizational theory, is a chart which shows the breakdown of a system to its lowest manageable levels.

7. In Design phase, which is the primary area of concern?

A. Architecture
B. Data
C. Interface
D. All of the above

View Answer

Ans : D

Explanation: Part of the design phase is to create structural and behavioral models of the system which is covered by architecture, data and the interface of the product.

8. Which of the following is the best type of module cohesion?

A. Functional Cohesion
B. Temporal Cohesion
C. Functional Cohesion
D. Sequential Cohesion

View Answer

Ans : A

Explanation: Functional Cohesion is a type of cohesion in which the tasks performed by a software module all contribute to the performance of a single function.

9. Which of the following is the worst type of module coupling?

A. Control Coupling
B. Stamp Coupling
C. External Coupling
D. Content Coupling

View Answer

Ans : D

Explanation: Content coupling occurs when module A changes data of module B or when control is passed from one module to the middle of another.

10. Choose the option that does not define Function Oriented Software Design.

A. It consists of module definitions
B. Modules represent data abstraction
C. Modules support functional abstraction
D. None of the above

View Answer

Ans : B

Explanation: Option B defines an Object Oriented Design

MCQ All Types

2022-04-01T11:52:00.001+05:30

The tag is similar to ____

(A) <BIG>tag

(B) tag

(D) <BIG>and tags

View Answer

Ans: D

<BIG>and tags

Question: 7

The HTML and HTTP standard are defined by ____

(A) Web client

(B) Internet association

(D) WWW

View Answer

Ans: C

WWW consortium

Question: 8

The tag used to add images to the HTML document is ____

(A)

(B) <HR>

(D) <IMG>

View Answer

Ans: D

<IMG>

Question: 9

The ____ passes the information given by the user to a specified program.

(A) User

(B) Programmer

(D) Browser

View Answer

Ans: C

Web server

Question: 10

____ is used to store the data within the documents on the server.

(A) XML

(B) HTML

(D) CGI

View Answer

Ans: A

XML

1.	Which of the following is true about Web services?
a.	Web services are open standard (XML, SOAP, HTTP etc.) based Web applications.
b.	Web services interact with other web applications for the purpose of exchanging data.
c.	Web Services can convert your existing applications into Web-applications.
d.	All of the above.

View Answer

Answer: (d).All of the above.

2.	Which of the following is correct statement about Synchronicity?
a.	Synchronicity refers to the binding of the client to the execution of the service.
b.	In synchronous invocations, the client blocks and waits for the service to complete its operation before continuing.
c.	Asynchronous operations allow a client to invoke a service and then execute other functions.
d.	All of the above.

View Answer

Answer: (d).All of the above.

3.	Which of the following role of web service architecture provides a central place where developers can publish new services or find existing ones?
a.	Service Provider
b.	Service Requestor
c.	Service Registry
d.	None of the above.

View Answer

Answer: (c).Service Registry

4.	How request is sent in XML-RPC?
a.	Requests are encoded in XML and sent via HTTP POST.
b.	Requests are encoded in XML and sent via HTTP GET.
c.	Both of the above.
d.	None of the above.

View Answer

Requests are encoded in XML and sent via HTTP POST.

5.	Which of the following is correct about SOAP?
a.	SOAP is an XML-based protocol for exchanging information between computers.
b.	SOAP is a communication protocol.
c.	SOAP is for communication between applications.
d.	All of the above.

View Answer

Answer: (d).All of the above.

6.	A script is a
a.	Program or sequence of instructions that is interpreted or carried out by processor directly
b.	Program or sequence of instruction that is interpreted or carried out by another program
c.	Program or sequence of instruction that is interpreted or carried out by web server only
d.	None of above

View Answer

Answer: (b).Program or sequence of instruction that is interpreted or carried out by another program

7.	When compared to the compiled program, scripts run
a.	Faster
b.	Slower
c.	The execution speed is similar
d.	Depend on the script

View Answer

Answer: (b).Slower

8.	Which of the following is a security issue with web services?
a.	Confidentiality
b.	Authentication
c.	Network Security
d.	All of the above

View Answer

Answer: (d).All of the above

9.	Web-applications were developed in order to interact _____________ .
a.	Different platforms
b.	Server
c.	Browsers
d.	None of these

View Answer

Answer: (a).Different platforms

10.	Which of the following layer in Web Service Protocol Stack is responsible for describing the public interface to a specific web service?
a.	Service Transport
b.	XML Messaging
c.	Service Description
d.	Service Discovery

View Answer

Answer: (c).Service Description

Design And Analysis Of Algorithm MCQ(All Multiple Choice Question)

2021-12-31T12:53:00.000+05:30

1.Which of the given options provides the increasing order of asymptotic complexity of functions f1, f2, f3 and f4? f1(n) = 2^n f2(n) = n^(3/2) f3(n) = nLogn f4(n) = n^(Logn)

Select one:

a. f3, f2, f1, f4

b. f2, f3, f1, f4

c. f2, f3, f4, f1

d. f3, f2, f4, f1

The correct answer is: f3, f2, f4, f1

2.Steps of Divide and Conquer approach

Select one:

a. Divide, Conquer and Combine Correct

b. Combine, Conquer and Divide

c. Combine, Divide and Conquer

d. Divide, Combine and Conquer

The correct answer is: Divide, Conquer and Combine

3.The complexity of searching an element from a set of n elements using Binary search algorithm is

Select one:

a. O(n log n)

b. O(log n)

c. O(n2) Incorrect

d. O(n)

The correct answer is: O(log n)

4.In the development of dynamic programming the value of an optimal solution is computed in Select one:

a. Top up fashion

b. Bottom up fashion

c. In any way

The correct answer is: Bottom up fashion

5.If length of the rod is 8 and the values of different pieces are given as following, then the maximum obtainable value is 22 (by cutting in two pieces of lengths 2 and 6. length | 1 2 3 4 5 6 7 8 ——————————————– price | 1 5 8 9 10 17 17 20 What is the worst case running time for the above problem

Select one:

a. O(2n)

b. O(log n)

c. O(n2)

d. O(n log n)

The correct answer is: O(n2)

6.The number of operations in Matrix multiplications M1, M2, M3, M4 and M5 of sizes 5X10, 10X100, 100X2, 2X20 and 20X50

Select one:

a. 5830

b. 4600 Correct

c. 6900

d. 12890

The correct answer is: 4600

7.Which case of Master’s theorem is applicable in the recurrence relation T(n)=0.5*T(n/2)+1/n?

Select one:

a. Case 3

b. Case 1

c. Master’s theorem is not applicable

d. Case 2

The correct answer is: Master’s theorem is not applicable

8. ______ is a condition that is always true at a particular point in an algorithm.

Select one:

a. assertion

b. constant

c. exception

d. invariant

The correct answer is: invariant

9.Division Pattern of Problems in Divide and Conquer approach

Select one:

a. Iterative

b. Recursive

c. Parallel

d. Random

The correct answer is: Recursive

10.RANDOMIZED-HIRE – ASSISTANT (n) Randomly permute the list of candidates Best=0 For i=1 to n interview candidate i If candidate I is better than candidate best best=i hire candidates i The expected hiring cost of the procedure is.

Select one:

a. O( n2)

b. O(ln n)

c. O( n)

d. O(n log n)

The correct answer is: O(ln n)

11.RANDOMIZE-IN-PLACE(A) n=A.length For i=1 to n Swap A[i] with A[RANDOM(I,n.] The time complexity of above algorithm is

Select one:

a. O(n3)

b. O(n2) Incorrect

c. O(n)

d. O(n ln n)

The correct answer is: O(n)

12.The running time of quick sort depends on the selection of.

Select one:

a. Selection of pivot elements

b. Number of input

c. Number of passes

d. Arrangements of the elements

The correct answer is: Selection of pivot elements

13. PERMUTE-BY-SHORTING(A) n=A.length Let P[1…n] be a new array For i=1 to n P[i]=RANDOM(1,n3) Sort A, using P as sort keys The time complexity of above algorithm is

Select one:

a. T(n3)

b. T(n ln n)

c. T(n2)

d. T(n)

The correct answer is: T(n ln n)

14.RANDOMIZE-IN-PLACE(A) n=A.length For i=1 to n Swap A[i] with A[RANDOM(I,n)] The above procedure RANDOMIZE-IN-PLACE(A) permutation occurs with probability

Select one:

a. Probability 1/n!

b. Probability n!

c. Probability n2

d. Probability n

The correct answer is: Probability 1/n!

15.Which of the following sorting algorithms does not have a worst case running time of O(n2) ?

Select one:

a. Quick sort

b. Merge sort

c. Insertion sort

d. Bubble sort

The correct answer is: Merge sort

16.Merge Sort divides the list in

Select one:

a. N equal parts

b. Two equal parts

c. Two parts, may not be equal

d. N parts, may not be equal

The correct answer is: Two equal parts

17.Time complexity of matrix chain multiplication

Select one:

a. O(n2)

b. O(n)

c. O(nlogn)

d. O(n3)

The correct answer is: O(n3)

18.A sort which relatively passes through a list to exchange the first element with any elementless than it and then repeats with a new first element is called________.

Select one:

a. Quick sort

b. heap sort

c. Insertion sort

d. Bubble sort

The correct answer is: Insertion sort

19.Apply Master theorem to T(n)=3.T(n/2)+n^2 and write what is f(n)

Select one:

a. f(n)=n/2+n^2

b. f(n)=n/2 c

. f(n)=n^2

d. f(n)=3n/2

The correct answer is: f(n)=n^2

20.RANDOMIZE-IN-PLACE(A) n=A.length For i=1 to n Swap A[i] with A[RANDOM(I,n.] The above procedure RANDOMIZE-IN-PLACE(A) computes

Select one:

a. a uniform deliberate permutation

b. a different random permutation

c. a different deliberate permutation

d. a uniform random permutation

The correct answer is: a uniform random permutation

21.Run Time of Merge Sort is

Select one:

a. BIG O of N log N Incorrect

b. Gamma of n log N

c. Theta of N log N

d. Omega of N log N

The correct answer is: Theta of N log N

22.Time complexities of three algorithms are given. Which should execute the slowest for large values of N?

Select one:

a. O(N)

b. O(N ½)

c. O(log n)

The correct answer is: O(N)

23.Time Complexity of Optimal binary search tree.

Select one:

a. O(logn)

b. O(n)

c. O(n!)

The correct answer is: O(logn)

24.Data Structure used for the Merge Sort

Select one:

a. Two Pointers

b. Two pointers and N Extra Arrays

c. 2N/2 pointers and N/2 Extra Arrays Incorrect

d. Two Pointers and an Extra Array

The correct answer is: Two Pointers and an Extra Array

25.In dynamic programming, the output to stage n become the input to

Select one:

a. stage n-1 Correct

b. stage n+1

c. stage n itself

d. stage n-2

The correct answer is: stage n-1

26.Time complexity of knapsack 0/1 where n is the number of items and W is the capacity of knapsack.

Select one:

a. O(W)

b. O(n)

c. O(nW)

The correct answer is: O(nW)

27.In dynamic programming, the output to stage n become the input to

Select one:

a. Objective function

b. Feasible solution

c. Decision stages

d. Optimum solution

The correct answer is: Decision stages

28.Master theorem applies to recurrences of the form (a=1 and b>1) are two constants.

Select one:

a. T(n)=a.T(n/b)+f(n)

b. T(n)=n.T(n/2)+b.f(n)

c. T(n)=a.T(n-1)+b

d. T(n)=n.T(n-3)+b

The correct answer is: T(n)=a.T(n/b)+f(n)

29.Time complexity of LCS

Select one:

a. O(m!)

b. O(mn)

c. O(n!)

The correct answer is: O(mn)

1. Which of the following is false in the case of a spanning tree of a graph G?
a) It is tree that spans G
b) It is a subgraph of the G
c) It includes every vertex of the G
d) It can be either cyclic or acyclic
Answer

Answer: d
Explanation: A graph can have many spanning trees. Each spanning tree of a graph G is a subgraph of the graph G, and spanning trees include every vertex of the gram. Spanning trees are always acyclic.

2. Every graph has only one minimum spanning tree.
a) True
b) False
Answer

Answer: b
Explanation: Minimum spanning tree is a spanning tree with the lowest cost among all the spacing trees. Sum of all of the edges in the spanning tree is the cost of the spanning tree. There can be many minimum spanning trees for a given graph.

3. Consider a complete graph G with 4 vertices. The graph G has ____ spanning trees.
a) 15
b) 8
c) 16
d) 13
Answer

Answer: c
Explanation: A graph can have many spanning trees. And a complete graph with n vertices has n(n-2) spanning trees. So, the complete graph with 4 vertices has 4(4-2) = 16 spanning trees.

4. The travelling salesman problem can be solved using _________
a) A spanning tree
b) A minimum spanning tree
c) Bellman – Ford algorithm
d) DFS traversal
Answer

Answer: b
Explanation: In the travelling salesman problem we have to find the shortest possible route that visits every city exactly once and returns to the starting point for the given a set of cities. So, travelling salesman problem can be solved by contracting the minimum spanning tree.

5. Consider the graph M with 3 vertices. Its adjacency matrix is shown below. Which of the following is true?

a) Graph M has no minimum spanning tree
b) Graph M has a unique minimum spanning trees of cost 2
c) Graph M has 3 distinct minimum spanning trees, each of cost 2
d) Graph M has 3 spanning trees of different costs
Answer

Answer: c
Explanation: Here all non-diagonal elements in the adjacency matrix are 1. So, every vertex is connected every other vertex of the graph. And, so graph M has 3 distinct minimum spanning trees.

6. Consider a undirected graph G with vertices { A, B, C, D, E}. In graph G, every edge has distinct weight. Edge CD is edge with minimum weight and edge AB is edge with maximum weight. Then, which of the following is false?

a) Every minimum spanning tree of G must contain CD

b) If AB is in a minimum spanning tree, then its removal must disconnect G

c) No minimum spanning tree contains AB

d) G has a unique minimum spanning tree

View Answer

Answer: c

Explanation: Every MST will contain CD as it is smallest edge. So, Every minimum spanning tree of G must contain CD is true. And G has a unique minimum spanning tree is also true because the graph has edges with distinct weights. So, no minimum spanning tree contains AB is false.

7. If all the weights of the graph are positive, then the minimum spanning tree of the graph is a minimum cost subgraph.
a) True
b) False
Answer

Answer: a
Explanation: A subgraph is a graph formed from a subset of the vertices and edges of the original graph. And the subset of vertices includes all endpoints of the subset of the edges. So, we can say MST of a graph is a subgraph when all weights in the original graph are positive.

8. Consider the graph shown below. Which of the following are the edges in the MST of the given graph?

a) (a-c)(c-d)(d-b)(d-b)
b) (c-a)(a-d)(d-b)(d-e)
c) (a-d)(d-c)(d-b)(d-e)
d) (c-a)(a-d)(d-c)(d-b)(d-e)
Answer

Answer: c
Explanation: The minimum spanning tree of the given graph is shown below. It has cost 56.

9. Which of the following is not the algorithm to find the minimum spanning tree of the given graph?
a) Boruvka’s algorithm
b) Prim’s algorithm
c) Kruskal’s algorithm
d) Bellman–Ford algorithm
Answer

Answer: d
Explanation: The Boruvka’s algorithm, Prim’s algorithm and Kruskal’s algorithm are the algorithms that can be used to find the minimum spanning tree of the given graph.
The Bellman-Ford algorithm is used to find the shortest path from the single source to all other vertices.

10. Which of the following is false?
a) The spanning trees do not have any cycles
b) MST have n – 1 edges if the graph has n edges
c) Edge e belonging to a cut of the graph if has the weight smaller than any other edge in the same cut, then the edge e is present in all the MSTs of the graph
d) Removing one edge from the spanning tree will not make the graph disconnected

Answer

Answer: d
Explanation: Every spanning tree has n – 1 edges if the graph has n edges and has no cycles. The MST follows the cut property, Edge e belonging to a cut of the graph if has the weight smaller than any other edge in the same cut, then the edge e is present in all the MSTs of the graph.

1. Branch and bound is a __________
a) problem solving technique
b) data structure
c) sorting algorithm
d) type of tree
Answer

Answer: a
Explanation: Branch and bound is a problem solving technique generally used for solving combinatorial optimization problems. Branch and bound helps in solving them faster.

2. Which of the following is not a branch and bound strategy to generate branches?
a) LIFO branch and bound
b) FIFO branch and bound
c) Lowest cost branch and bound
d) Highest cost branch and bound
Answer

Answer: d
Explanation: LIFO, FIFO and Lowest cost branch and bound are different strategies to generate branches. Lowest cost branch and bound helps us find the lowest cost path.

3. Which data structure is used for implementing a LIFO branch and bound strategy?
a) stack
b) queue
c) array
d) linked list
Answer

Answer: a
Explanation: Stack is the data structure is used for implementing LIFO branch and bound strategy. This leads to depth first search as every branch is explored until a leaf node is discovered.

4. Which data structure is used for implementing a FIFO branch and bound strategy?
a) stack
b) queue
c) array
d) linked list
Answer

Answer: b
Explanation: Queue is the data structure is used for implementing FIFO branch and bound strategy. This leads to breadth first search as every branch at depth is explored first before moving to the nodes at greater depth.

5. Which data structure is most suitable for implementing best first branch and bound strategy?
a) stack
b) queue
c) priority queue
d) linked list
Answer

Answer: c
Explanation: Priority Queue is the data structure is used for implementing best first branch and bound strategy. Dijkstra’s algorithm is an example of best first search algorithm.

6. Which of the following branch and bound strategy leads to breadth first search?

a) LIFO branch and bound
b) FIFO branch and bound
c) Lowest cost branch and bound
d) Highest cost branch and bound
Answer

Answer: b
Explanation: LIFO, FIFO and Lowest cost branch and bound are different strategies to generate branches. FIFO branch and bound leads to breadth first search.

7. Which of the following branch and bound strategy leads to depth first search?
a) LIFO branch and bound
b) FIFO branch and bound
c) Lowest cost branch and bound
d) Highest cost branch and bound
Answer

Answer: a
Explanation: LIFO, FIFO and Lowest cost branch and bound are different strategies to generate branches. LIFO branch and bound leads to depth first search.

8. Both FIFO branch and bound strategy and backtracking leads to depth first search.
a) true
b) false
Answer

Answer: b
Explanation: FIFO branch and bound leads to breadth first search. Whereas backtracking leads to depth first search.

9. Both LIFO branch and bound strategy and backtracking leads to depth first search.
a) true
b) false
Answer

Answer: a
Explanation: Both backtrackings as well as branch and bound are problem solving algorithms. Both LIFO branch and bound strategy and backtracking leads to depth first search.

10. Choose the correct statement from the following.
a) branch and bound is more efficient than backtracking
b) branch and bound is not suitable where a greedy algorithm is not applicable
c) branch and bound divides a problem into at least 2 new restricted sub problems
d) backtracking divides a problem into at least 2 new restricted sub problems
Answer

Answer: c
Explanation: Both backtracking as well as branch and bound are problem solving algorithms. Branch and bound is less efficient than backtracking. Branch and bound divides a problem into at least 2 new restricted sub problems.

11. Which of the following can traverse the state space tree only in DFS manner?
a) branch and bound
b) dynamic programming
c) greedy algorithm
d) backtracking
Answer

Answer: d
Explanation: Both backtracking as well as branch and bound are problem solving algorithms. Branch and bound can traverse in DFS as well as BFS manner whereas backtracking only traverses in DFS manner.

1. Which of the following is true?
a) Prim’s algorithm initialises with a vertex
b) Prim’s algorithm initialises with a edge
c) Prim’s algorithm initialises with a vertex which has smallest edge
d) Prim’s algorithm initialises with a forest
Answer

Answer: a
Explanation: Steps in Prim’s algorithm: (I) Select any vertex of given graph and add it to MST (II) Add the edge of minimum weight from a vertex not in MST to the vertex in MST; (III) It MST is complete the stop, otherwise go to step (II).

2. Consider the given graph.

What is the weight of the minimum spanning tree using the Prim’s algorithm,starting from vertex a?
a) 23
b) 28
c) 27
d) 11
Answer

Answer: c
Explanation: In Prim’s algorithm, we select a vertex and add it to the MST. Then we add the minimum edge from the vertex in MST to vertex not in MST. From, figure shown below weight of MST = 27.

3. Worst case is the worst case time complexity of Prim’s algorithm if adjacency matrix is used?
a) O(log V)
b) O(V2)
c) O(E2)
d) O(V log E)
Answer

Answer: b
Explanation: Use of adjacency matrix provides the simple implementation of the Prim’s algorithm. In Prim’s algorithm, we need to search for the edge with a minimum for that vertex. So, worst case time complexity will be O(V2), where V is the number of vertices.

4. Prim’s algorithm is a ______
a) Divide and conquer algorithm
b) Greedy algorithm
c) Dynamic Programming
d) Approximation algorithm
Answer

Answer: b
Explanation: Prim’s algorithm uses a greedy algorithm approach to find the MST of the connected weighted graph. In greedy method, we attempt to find an optimal solution in stages.

5. Prim’s algorithm resembles Dijkstra’s algorithm.
a) True
b) False
Answer

Answer: a
Explanation: In Prim’s algorithm, the MST is constructed starting from a single vertex and adding in new edges to the MST that link the partial tree to a new vertex outside of the MST. And Dijkstra’s algorithm also rely on the similar approach of finding the next closest vertex. So, Prim’s algorithm resembles Dijkstra’s algorithm.

6. Kruskal’s algorithm is best suited for the sparse graphs than the prim’s algorithm.

a) True
b) False
Answer

Answer: a
Explanation: Prim’s algorithm and Kruskal’s algorithm perform equally in case of the sparse graphs. But Kruskal’s algorithm is simpler and easy to work with. So, it is best suited for sparse graphs.

7. Consider the graph shown below.

Which of the following edges form the MST of the given graph using Prim’a algorithm, starting from vertex 4.
a) (4-3)(5-3)(2-3)(1-2)
b) (4-3)(3-5)(5-1)(1-2)
c) (4-3)(3-5)(5-2)(1-5)
d) (4-3)(3-2)(2-1)(1-5)
Answer

Answer: d
Explanation: The MST for the given graph using Prim’s algorithm starting from vertex 4 is,

So, the MST contains edges (4-3)(3-2)(2-1)(1-5).

8. Prim’s algorithm is also known as __________
a) Dijkstra–Scholten algorithm
b) Borůvka’s algorithm
c) Floyd–Warshall algorithm
d) DJP Algorithm
Answer

Answer: d
Explanation: The Prim’s algorithm was developed by Vojtěch Jarník and it was latter discovered by the duo Prim and Dijkstra. Therefore, Prim’s algorithm is also known as DJP Algorithm.

9. Prim’s algorithm can be efficiently implemented using _____ for graphs with greater density.
a) d-ary heap
b) linear search
c) fibonacci heap
d) binary search
Answer

Answer: a
Explanation: In Prim’s algorithm, we add the minimum weight edge for the chosen vertex which requires searching on the array of weights. This searching can be efficiently implemented using binary heap for dense graphs. And for graphs with greater density, Prim’s algorithm can be made to run in linear time using d-ary heap(generalization of binary heap).

10. Which of the following is false about Prim’s algorithm?
a) It is a greedy algorithm
b) It constructs MST by selecting edges in increasing order of their weights
c) It never accepts cycles in the MST
d) It can be implemented using the Fibonacci heap
Answer

Answer: b
Explanation: Prim’s algorithm can be implemented using Fibonacci heap and it never accepts cycles. And Prim’s algorithm follows greedy approach. Prim’s algorithms span from one vertex to another.

1. Kruskal’s algorithm is used to ______
a) find minimum spanning tree
b) find single source shortest path
c) find all pair shortest path algorithm
d) traverse the graph
Answer

Answer: a
Explanation: The Kruskal’s algorithm is used to find the minimum spanning tree of the connected graph. It construct the MST by finding the edge having the least possible weight that connects two trees in the forest.

2. Kruskal’s algorithm is a ______
a) divide and conquer algorithm
b) dynamic programming algorithm
c) greedy algorithm
d) approximation algorithm
Answer

Answer: c
Explanation: Kruskal’s algorithm uses a greedy algorithm approach to find the MST of the connected weighted graph. In the greedy method, we attempt to find an optimal solution in stages.

3. Consider the given graph.

What is the weight of the minimum spanning tree using the Kruskal’s algorithm?
a) 24
b) 23
c) 15
d) 19
Answer

Answer: d
Explanation: Kruskal’s algorithm constructs the minimum spanning tree by constructing by adding the edges to spanning tree one-one by one. The MST for the given graph is,

So, the weight of the MST is 19.

4. What is the time complexity of Kruskal’s algorithm?
a) O(log V)
b) O(E log V)
c) O(E2)
d) O(V log E)
Answer

Answer: b
Explanation: Kruskal’s algorithm involves sorting of the edges, which takes O(E logE) time, where E is a number of edges in graph and V is the number of vertices. After sorting, all edges are iterated and union-find algorithm is applied. union-find algorithm requires O(logV) time. So, overall Kruskal’s algorithm requires O(E log V) time.

5. Consider the following graph. Using Kruskal’s algorithm, which edge will be selected first?

a) GF
b) DE
c) BE
d) BG
Answer

Answer: c
Explanation: In Krsuskal’s algorithm the edges are selected and added to the spanning tree in increasing order of their weights. Therefore, the first edge selected will be the minimal one. So, correct option is BE.

6. Which of the following edges form minimum spanning tree on the graph using kruskals algorithm?

a) (B-E)(G-E)(E-F)(D-F)
b) (B-E)(G-E)(E-F)(B-G)(D-F)
c) (B-E)(G-E)(E-F)(D-E)
d) (B-E)(G-E)(E-F)(D-F)(D-G)
Answer

Answer: a
Explanation: Using Krushkal’s algorithm on the given graph, the generated minimum spanning tree is shown below.

So, the edges in the MST are, (B-E)(G-E)(E-F)(D-F).

7. Which of the following is true?
a) Prim’s algorithm can also be used for disconnected graphs
b) Kruskal’s algorithm can also run on the disconnected graphs
c) Prim’s algorithm is simpler than Kruskal’s algorithm
d) In Kruskal’s sort edges are added to MST in decreasing order of their weights
Answer

Answer: b
Explanation: Prim’s algorithm iterates from one node to another, so it can not be applied for disconnected graph. Kruskal’s algorithm can be applied to the disconnected graphs to construct the minimum cost forest. Kruskal’s algorithm is comparatively easier and simpler than prim’s algorithm.

8. Which of the following is false about the Kruskal’s algorithm?
a) It is a greedy algorithm
b) It constructs MST by selecting edges in increasing order of their weights
c) It can accept cycles in the MST
d) It uses union-find data structure
Answer

Answer: c
Explanation: Kruskal’s algorithm is a greedy algorithm to construct the MST of the given graph. It constructs the MST by selecting edges in increasing order of their weights and rejects an edge if it may form the cycle. So, using Kruskal’s algorithm is never formed.

9. Kruskal’s algorithm is best suited for the dense graphs than the prim’s algorithm.
a) True
b) False
Answer

Answer: b
Explanation: Prim’s algorithm outperforms the Kruskal’s algorithm in case of the dense graphs. It is significantly faster if graph has more edges than the Kruskal’s algorithm.

10. Consider the following statements.
S1. Kruskal’s algorithm might produce a non-minimal spanning tree.
S2. Kruskal’s algorithm can efficiently implemented using the disjoint-set data structure.
a) S1 is true but S2 is false
b) Both S1 and S2 are false
c) Both S1 and S2 are true
d) S2 is true but S1 is false
Answer

Answer: d
Explanation: In Kruskal’s algorithm, the disjoint-set data structure efficiently identifies the components containing a vertex and adds the new edges. And Kruskal’s algorithm always finds the MST for the connected graph.

1. Fractional knapsack problem is also known as __________
a) 0/1 knapsack problem
b) Continuous knapsack problem
c) Divisible knapsack problem
d) Non continuous knapsack problem
Answer

Answer: b
Explanation: Fractional knapsack problem is also called continuous knapsack problem. Fractional knapsack is solved using dynamic programming.

2. Fractional knapsack problem is solved most efficiently by which of the following algorithm?
a) Divide and conquer
b) Dynamic programming
c) Greedy algorithm
d) Backtracking
Answer

Answer: c
Explanation: Greedy algorithm is used to solve this problem. We first sort items according to their value/weight ratio and then add item with highest ratio until we cannot add the next item as a whole. At the end, we add the next item as much as we can.

3. What is the objective of the knapsack problem?
a) To get maximum total value in the knapsack
b) To get minimum total value in the knapsack
c) To get maximum weight in the knapsack
d) To get minimum weight in the knapsack
Answer

Answer: a
Explanation: The objective is to fill the knapsack of some given volume with different materials such that the value of selected items is maximized.

4. Which of the following statement about 0/1 knapsack and fractional knapsack problem is correct?
a) In 0/1 knapsack problem items are divisible and in fractional knapsack items are indivisible
b) Both are the same
c) 0/1 knapsack is solved using a greedy algorithm and fractional knapsack is solved using dynamic programming
d) In 0/1 knapsack problem items are indivisible and in fractional knapsack items are divisible
Answer

Answer: d
Explanation: In fractional knapsack problem we can partially include an item into the knapsack whereas in 0/1 knapsack we have to either include or exclude the item wholly.

5. Time complexity of fractional knapsack problem is ____________
a) O(n log n)
b) O(n)
c) O(n2)
d) O(nW)
Answer

Answer: a
Explanation: As the main time taking a step is of sorting so it defines the time complexity of our code. So the time complexity will be O(n log n) if we use quick sort for sorting.

6. Fractional knapsack problem can be solved in time O(n).

a) True
b) False
Answer

Answer: a
Explanation: It is possible to solve the problem in O(n) time by adapting the algorithm for finding weighted medians.

7. Given items as {value,weight} pairs {{40,20},{30,10},{20,5}}. The capacity of knapsack=20. Find the maximum value output assuming items to be divisible.
a) 60
b) 80
c) 100
d) 40
Answer

Answer: a
Explanation: The value/weight ratio are-{2,3,4}. So we include the second and third items wholly into the knapsack. This leaves only 5 units of volume for the first item. So we include the first item partially.
Final value = 20+30+(40/4)=60.

8. The result of the fractional knapsack is greater than or equal to 0/1 knapsack.
a) True
b) False
Answer

Answer: a
Explanation: As fractional knapsack gives extra liberty to include the object partially which is not possible with 0/1 knapsack, thus we get better results with a fractional knapsack.

9. The main time taking step in fractional knapsack problem is ___________
a) Breaking items into fraction
b) Adding items into knapsack
c) Sorting
d) Looping through sorted items
Answer

Answer: c
Explanation: The main time taking step is to sort the items according to their value/weight ratio. It defines the time complexity of the code.

10. Given items as {value,weight} pairs {{60,20},{50,25},{20,5}}. The capacity of knapsack=40. Find the maximum value output assuming items to be divisible and nondivisible respectively.
a) 100, 80
b) 110, 70
c) 130, 110
d) 110, 80
Answer

Answer: d
Explanation: Assuming items to be divisible-
The value/weight ratio are {3, 2, 4}.So we include third and first items wholly. So, now only 15 units of volume are left for second item. So we include it partially.
Final volume = 20+60+50x(15/25)=80+30=110
Assuming items to be indivisible- In this case we will have to leave one item due to insufficient capacity.
Final volume = 60 + 20 = 80.

1. Which of the following algorithms is the best approach for solving Huffman codes?
a) exhaustive search
b) greedy algorithm
c) brute force algorithm
d) divide and conquer algorithm
Answer

Answer: b
Explanation: Greedy algorithm is the best approach for solving the Huffman codes problem since it greedily searches for an optimal solution.

2. How many printable characters does the ASCII character set consists of?
a) 120
b) 128
c) 100
d) 98
Answer

Answer: c
Explanation: Out of 128 characters in an ASCII set, roughly, only 100 characters are printable while the rest are non-printable.

3. Which bit is reserved as a parity bit in an ASCII set?
a) first
b) seventh
c) eighth
d) tenth
Answer

Answer: c
Explanation: In an ASCII character set, seven bits are reserved for character representation while the eighth bit is a parity bit.

4. How many bits are needed for standard encoding if the size of the character set is X?
a) log X
b) X+1
c) 2X
d) X2
Answer

Answer: a
Explanation: If the size of the character set is X, then [log X] bits are needed for representation in a standard encoding.

5. The code length does not depend on the frequency of occurrence of characters.
a) true
b) false
Answer

Answer: b
Explanation: The code length depends on the frequency of occurrence of characters. The more frequent the character occurs, the less is the length of the code.

6. In Huffman coding, data in a tree always occur?
a) roots
b) leaves
c) left sub trees
d) right sub trees
Answer

Answer: b
Explanation: In Huffman encoding, data is always stored at the leaves of a tree inorder to compute the codeword effectively.

7. From the following given tree, what is the code word for the character ‘a’?

a) 011
b) 010
c) 100
d) 101
Answer

Answer: a
Explanation: By recording the path of the node from root to leaf, the code word for character ‘a’ is found to be 011.

8. From the following given tree, what is the computed codeword for ‘c’?

a) 111
b) 101
c) 110
d) 011
Answer

Answer: c
Explanation: By recording the path of the node from root to leaf, assigning left branch as 0 and right branch as 1, the codeword for c is 110.

9. What will be the cost of the code if character ci is at depth di and occurs at frequency fi?
a) cifi
b) ∫cifi
c) ∑fidi
d) fidi
Answer

Answer: c
Explanation: If character ci is at depth di and occurs at frequency fi, the cost of the codeword obtained is ∑fidi.

10. An optimal code will always be present in a full tree.
a) true
b) false
Answer

Answer: a
Explanation: An optimal tree will always have the property that all nodes are either leaves or have two children. Otherwise, nodes with one child could move up a level.

11. The type of encoding where no character code is the prefix of another character code is called?
a) optimal encoding
b) prefix encoding
c) frequency encoding
d) trie encoding
Answer

Answer: b
Explanation: Even if the character codes are of different lengths, the encoding where no character code is the prefix of another character code is called prefix encoding.

12. What is the running time of the Huffman encoding algorithm?
a) O(C)
b) O(log C)
c) O(C log C)
d) O( N log C)
Answer

Answer: c
Explanation: If we maintain the trees in a priority queue, ordered by weight, then the running time is given by O(C log C).

13. What is the running time of the Huffman algorithm, if its implementation of the priority queue is done using linked lists?
a) O(C)
b) O(log C)
c) O(C log C)
d) O(C2)
Answer

Answer: d
Explanation: If the implementation of the priority queue is done using linked lists, the running time of Huffman algorithm is O(C2).

1. ________ is a typical online problem from the competitive analysis to determine the optimal solution.
a) Page replacement algorithm
b) Segmentation
c) Paging
d) Segmentation with paging
Answer

Answer: a
Explanation: Page replacement is a typical online problem from the competitive analysis. They determine which pages to page out or write to disk.

2. Which of the following is the simplest page replacement algorithm?
a) FIFO
b) Optimal page replacement
c) LRU replacement
d) Counting based replacement
Answer

Answer: a
Explanation: FIFO is the simplest page replacement algorithm since LRU and optimal replacement algorithms require past and future data patterns respectively.

3. __________ algorithm associates with each page the time when the page was brought into memory.
a) Optimal page replacement
b) FIFO
c) LRU replacement algorithm
d) Counting based replacement
Answer

Answer: b
Explanation: FIFO algorithm associates with each page the time when the page was brought into memory. The new page is inserted at the tail of the queue.

4. As the number of frames available increases, the number of page faults decreases.
a) True
b) False
Answer

Answer: a
Explanation: One of the rules of the page replacement algorithm is that, as the number of frames available increases, the number of page faults decreases.

5. Which of the following page replacement algorithms return the minimum number of page faults?
a) LRU replacement algorithm
b) Optimal page replacement algorithm
c) FIFO
d) Counting based replacement
Answer

Answer: b
Explanation: Though FIFO is the simplest of all algorithms, optimal page replacement algorithm returns the minimum number of page faults.

6. Which of the following is the main drawback of FIFO page replacement algorithm?

a) Requirement of large memory

b) Frame allocation

c) Reduction in multiprogramming

d) Reduced optimality

Answer

Answer: c

Explanation: The main drawback of FIFO page replacement algorithm is that it reduces the level of multiprogramming and also causes Belady’s anomaly.

7. Which of the following is required to determine the number of page faults in FIFO?

a) Page number
b) Page frame number
c) Memory capacity
d) Segment number

Answer

Answer: b
Explanation: To determine the number of page faults in a page replacement algorithm using FIFO, we require page frame number.

8. In a FIFO algorithm, when a page is to be replaced, which of the following page is chosen?
a) Oldest page
b) Newest page
c) Frequently occurred page in past
d) Frequently occurred page in future
Answer

Answer: a
Explanation: In FIFO page replacement algorithm, when a page is to be replaced, the oldest page is chosen and replaced at the tail of the queue.

9. The cost required to execute a FIFO algorithm is expensive.
a) True
b) False
Answer

Answer: b
Explanation: The cost of a FIFO algorithm is cheap and intuitive and it is used in poor practical applications.

10. FIFO algorithm is used by __________ operating system.
a) Linux
b) Mac
c) Windows
d) VAX/VMS
Answer

Answer: d
Explanation: Of the following given operating systems, VAX/VMS uses a FIFO algorithm.

11. What is the competitive analysis of the FIFO algorithm?
a) k/k+1
b) k+1
c) k(k+1)
d) k/(k-h+1)
Answer

Answer: d
Explanation: The competitive analysis of a FIFO algorithm is mathematically found to be k/(k-h+1) where k and h are some constants used in page replacement and always, h<=k.

12. Under which of the following scenarios is page replacement algorithm required?
a) When total memory exceeds physical memory
b) To determine the number of frames for each process
c) When paging and segmentation are to be used
d) Execution of a process, not in memory
Answer

Answer: a
Explanation: An appropriate page replacement algorithm is required when the total memory requirements exceed the physical memory.

13. Consider a reference string:
7,0,1,2,0,3,0,4,2,3,0,3,2,1,2,0,1,7,0,1 of frame size 3. Using FIFO algorithm, determine the number of page faults.
a) 12
b) 16
c) 14
d) 15
Answer

Answer: d
Explanation: For the given reference string of frame size 3, the number of page faults is calculated to be 15. It is explained in the diagram.

14. Consider a reference string:
7,0,1,2,0,3,0,4,2,3,0,3,2,1,2,0,1,7,0,1 of frame size 4. Using FIFO algorithm, determine the number of page faults.
a) 12
b) 16
c) 10
d) 14
Answer

Answer: c
Explanation: For the given reference string of frame size 4, the number of page faults is calculated to be 10. It is explained in the diagram.

15. _________ states that, on a page fault, the frame that has been in memory the longest is replaced.
a) Belady’s anomaly
b) Second chance algorithm
c) Partial second chance algorithm
d) LRU replacement algorithm
Answer

Answer: a
Explanation: Belady’s anomaly states that, on a page fault, the frame that has been in memory the longest is replaced. It occurs in FIFO algorithm.

NEW YEAR'S DAY 2021

2020-12-06T13:25:00.001+05:30

Friday,

1 January

New Year's Day 2021

NEW YEAR

New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one. Many cultures celebrate the event in some manner and the 1st day of January is often marked as a national holiday.

Happy New Year 2021 Images

Find the perfect happy new year 2021 stock photo

Why do we celebrate the New Year?
During the Roman era, March marked the beginning of the calendar. Then, in 46 B.C., Julius Caesar created the Julian calendar, which set the new year when it is celebrated today, Live Science previously reported. ... The Gregorian calendar was an attempt to make the calendar stop wandering with respect to the seasons.
Which country sees new year first?
New Year is first celebrated on the small Pacific island nations of Tonga, Samoa and Kiribati. New Zealand follows next in celebrating the New newyeaYear, followed by Australia,Japan, and South Korea, while the last place to celebrate New Year is Bakers Island which lies in central Pacific Ocean
What is special about the year 2021? The United Nations has declared 2021 as the International Year of Peace and Trust, the International Year of Creative Economy for Sustainable Development, the International Year of Fruits and Vegetables, and the IntLabour.

Friendship Day 2020

2020-08-02T12:27:00.000+05:30

Friendship Day 2020

Date in India: The day is usually celebrated on the first Sunday of the month of August.

Many happy days are wished for you this Friendship Day. You are like a rock, always there to support and encourage.

International Day of Yoga 2020

2020-06-21T22:20:00.001+05:30

International Day of Yoga 2020

Why is International Yoga Day celebrated?

International Day of Yoga is observed on 21st June every year to spread awareness about the importance and effects of yoga on the health of the people.

What is the theme of International Yoga Day 2019?

The theme for International Yoga Day 2019 is Climate Action and it will be celebrated at the United Nations on Thursday (June 20) with "Yoga with Gurus," followed by a panel discussion on 21 June. “Yoga is an ancient physical, mental and spiritual practice that originated in India.

Who started yoga in India?

The beginnings of Yoga were developed by the Indus-Sarasvati civilization in Northern India over 5,000 years ago. The word yoga was first mentioned in the oldest sacred texts, the Rig Veda. The Vedas were a collection of texts containing songs, mantras and rituals to be used by Brahmans, the Vedic priests

When was International Day of Yoga started?

21 June 2015 .

The first International Day of Yoga was observed around the world on 21 June 2015. The Ministry of AYUSH made the necessary arrangements in India

35,985 people, including Narendra Modi and dignitaries from 84 nations, performed 21 asanas (yoga postures) for 35 minutes at Rajpath in New Delhi.

What are the 10 benefits of yoga?

Top 10 Health Benefits of Yoga

Improves Flexibility.

Moving and stretching in new ways will help you become more flexible, bringing a greater range of motion to tight areas. ...

Builds Strength.

Increases Muscle Tone and Definition.

Improves Balance.

Supports Joint Health.

Prevents Back Pain.

Teaches Better Breathing.

Fosters Mental Calmness.

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हां
बिलोरी निगाहों से करे है सौ इशारे
खिड़की के नीचे नासपीटा सीटी मारे
बिलोरी निगाहों से करे है सौ इशारे
खिड़की के नीचे नासपीटा सीटी मारे
हूर सा चेहरा ईरानी और लेहेज़ा हिन्दुस्तानी
झील सी तेरी आंखों में एक हलचल है तूफानी
देख महफ़िल में आए है जान की देने कुर्बानी
एक मेहबूबा कि खातिर आग दो दो दिलबर जानी
जिनके दिल के engine तेरे 'tation पे है ठहरा
हो. जिनके दिल के engine तेरे 'tation पे है ठहरा
समझे काहे ऐरा गैरा नथुखैरा
सैयां मेरा ऐरा गैरा नथुखैरा
समझे काहे ऐरा गैरा नथुखैरा
समझे काहे ऐरा गैरा नथुखैरा
रात लेके आयी है जश्न तारी, आए हाए हाए
ग़म गलत करने की है अपनी बारी, आए हाए हाए
रात लेके आयी है जश्न तारी, आए हाए हाए
ग़म गलत करने की है अपनी बारी, आए हाए हाए
आज नाचें गाएं ज़रा इश्क़ विश्क़ फरमाएं
और जान जलाने वाली भाड़ में जाए सारी दुनियादारी
आए हाए हाए
आए हाए, ओए…

Song	Kalank (Aira Gaira)
Singer	Antara Mitra, Javed Ali, Tushar Joshi
Music	Pritam
lyrics	Amitabh Bhattacharya
Label	Zee Music company

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Lyrics:

सा सा रे रे ग ग म म ग म रे सा
दी नहीं दुआ भले
न दी कभी बद्दुआ
ना खफा हुए न हम
हुए कभी बेवफा
तुम मगर बेवफा हो गए
क्यूँ खफा हो गए
के तुमसे जुदा होके हम
तबाह हो गए
तबाह हो गए
तबाह हो गए
तबाह हो गए
फिर अंखियन में प्रीत की तेरी रीत जागा जाना
मोहे छोड़ के जाने खातिर ही लौट के आ जाना
फिर अंखियन में प्रीत की तेरी रीत जागा जाना
मोहे छोड़ के जाने खातिर ही लौट के आ जाना
हाँ ग़ैर के हमनवा हो गए
क्यूँ खफा हो गए
की तुमसे जुदा होके हम
तबाह हो गए
तबाह हो गए
तबाह हो गए
तबाह हो गए
हाँ सजदे में हमने मांगा था
उमर भी हमारी लग जाए तुमको
खुद से ही तौबा करते थे…

Song	Kalank (Tabaah Ho Gaye)
Singer	Shreya Ghoshal
Music	Pritam
lyrics	Amitabh Bhattacharya
Label	Zee Music company

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Lyrics:

मेरे होठों से धुआंधार
निकलती है जो बोली
जैसे जैसे बन्दूक की गोली
मेरे तेवर में है
तहज़ीब की रंगीन रंगोली
जैसे जैसे हो ईद में होली
मेरे जीवन की दशा
थोड़ा रास्तों का नशा
थोड़ी मंजिल की प्यास है
बाकी सब फर्स्ट क्लास है
बाकी सब फर्स्ट क्लास है
बाकी सब फर्स्ट क्लास है
हाँ कसम से
बाकी सब फर्स्ट क्लास है
पल में तोला, पल में मासा
जैसी बाज़ी वैसा पासा
अपनी थोड़ी हट के दुनियांदारी है
करना क्या है चाँदी सोना
जितना पाना उतना खोना
हम तो दिल के धंधे के व्यापारी हैं
मेरी मुस्कान लिए कभी आती है सुबह
कभी शामें उदास है
बाकी सब फर्स्ट क्लास है
बाकी सब फर्स्ट क्लास है
बाकी सब फर्स्ट क्लास है
हाँ कसम से
बाकी सब फर्स्ट क्लास है
हो सबके होठों पे चर्चा तेरा
बंटता गलियों में पर्चा तेरा
यूँ तो आशिक हैं लाखों मगर
सबसे ऊँचा है दर्जा तेरा
जेब में हो अठन्नी भले
चलता नोटों में खर्चा तेरा
यूँ तो आशिक हैं लाखों मगर
सबसे ऊँचा है दर्जा तेरा
सबसे ऊँचा है दर्जा तेरा
मेरी तारीफ़ से छुपती फिरे बदनामियाँ मेरी
जैसे जैसे हो आँख मिचोली
मेरे तेवर में है
तहज़ीब की रंगीन रंगोली
जैसे जैसे हो ईद में होली
मेरे जीवन की दशा
थोड़ा रास्तों का नशा
थोड़ी मंजिल की प्यास है
बाकी सब फर्स्ट क्लास है
बाकी सब फर्स्ट क्लास है
बाकी सब फर्स्ट क्लास है
हाँ कसम से
बाकी सब फर्स्ट क्लास है, हाँ

Song	Kalank (First Class Hai)
Singer	Arijit Singh, Neeti Mohan
Music	Pritam
lyrics	Amitabh Bhattacharya
Label	Zee Music company

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Yuhi nahi tujhpe Dil ye fida hai, Sabse tu aledaa Sabse jooda hai [2] Na mumkeen tujhsa koi chehara mil panaa.... Dil mera chahe Jabhi tu aae Tujhse me Kahedoo Wapas na jana Baho me teri Sari sab jaagu Aakho se dekhu Subhoka aana Dil mera chahe Jabhi tu aae Tujhse me Kahedoo Wapas na jana Baho me teri Sari sab jaagu Aakho se dekhu Subhoka aana

Miloge kabhi jo tum Batayenge kya ho tum Milo aab akele raha jae na Aaaaa.................. Miloge kabhi jo tum Batayenge kya ho tum Milo aab akele raha jae na Bahat hi Jaroori ho Khatam sari doori ho Koi faasla aab saha jaena Muskil hai dil ko bin tere samjhana.......... Dil mera chahe Jabhi tu aae Tujhse me Kahedoo Wapas na jana Baho me teri Sari sab jaagu Aakho se dekhu Subhoka aana Dil mera chahe Jabhi tu aae Tujhse me Kahedoo Wapas na jana Baho me teri Sari sab jaagu Aakho se dekhu Subhoka aana

Aaaaaa......... Ajab dil ki halat ho Jo teri jiaarat hoo Najar ko najara Koi bhae na Aaaaa............ Ajab dil ki halat ho Jo teri jiaarat hoo Najar ko najara Koi bhae na Yebo bekaari hai Jo dariya si jaari hai Tera ishq mujh ko Baha jae na Sahil tarha tu mujhko bachana.............. Dil mera chahe Jabhi tu aae Tujhse me Kahedoo Wapas na jana Baho me teri Sari sab jaagu Aakho se dekhu Subhoka aana Dil mera chahe Jabhi tu aae Tujhse me Kahedoo Wapas na jana Baho me teri Sari sab jaagu Aakho se dekhu Subhoka aana.....

Song	Kalank (Yuhi Nahi Tujhpe)
Singer	Arijit Singh
Music	Pritam
lyrics	Amitabh Bhattacharya
Label	Zee Music company

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Lyrics:

छुपा भी ना सकेंगे
बता भी ना सकेंगे
हुए हैं यूं तेरे
प्यार में पागल पिया
जो तेरे ना हुए तो
किसी के ना रहेंगे
की अब ना किसी और से लागे जिया

हजारों में किसी को तकदीर ऐसी
मिली है एक रांझा और हीर जैसी
ना जाने ये ज़माना
क्यूं चाहे रे मिटाना
कलंक नहीं इश्क़ है काजल पिया
कलंक नहीं इश्क़ है काजल पिया

ठोकर पे दुनिया है, घर बार है
दिल में जो दिलबर का दरबार है
सजदे में बैठे हैं जितनी दफा
वो मेरे मन्नत में हर बार है
उसी का अब ले रहे हैं नाम हम तो सांसों की जगह
क्यूं जाने एक दिन भी लागे
हमको बारा मासों की तरह
जो अपना है सारा, सजन्निया पे वारा
ना था मेरे किसी और का आंचल पिया

Song	Kalank (Chupa bhi na sakenge)
Singer	Arijit Singh
Music	Pritam
lyrics	Amitabh Bhattacharya
Label	Zee Music company

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NEW YEAR'S DAY 2021

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Friendship Day 2020

International Day of Yoga 2020

International Day of Yoga 2020

Why is International Yoga Day celebrated?

International Day of Yoga is observed on 21st June every year to spread awareness about the importance and effects of yoga on the health of the people.

What is the theme of International Yoga Day 2019?

The theme for International Yoga Day 2019 is Climate Action and it will be celebrated at the United Nations on Thursday (June 20) with "Yoga with Gurus," followed by a panel discussion on 21 June. “Yoga is an ancient physical, mental and spiritual practice that originated in India.

Who started yoga in India?

When was International Day of Yoga started?

21 June 2015 .

The first International Day of Yoga was observed around the world on 21 June 2015. The Ministry of AYUSH made the necessary arrangements in India

35,985 people, including Narendra Modi and dignitaries from 84 nations, performed 21 asanas (yoga postures) for 35 minutes at Rajpath in New Delhi.

What are the 10 benefits of yoga?

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