BCA Study material point

Computer Fundamental MCQ Important Question

2022-01-12T20:24:00.000+05:30

Q.1 Which of the following is the valid measurement unit of memory?

Ans KB, MB, GB

Q.2 How many arrow keys are in keyboard?

Ans Four

Q.3 How many keys are on keyboard?

Ans 104

Q.4 The list of coded instruction in computer is called?

Ans Computer Program

Q.5 The part of CPU which program all mathematical operations?

Ans ALU

Q.6 Example of hardware?

Ans Keyboard, Mouse, Printer

Q.7 How many types of S/W are?

Ans Two

Q.8 FIFO Stands For?

Ans First in first out

Q.9 ALU is part of memory?

Ans False

Q.10 Type Of RAM?

Ans Two Types of RAM

1). SRAM

2) DRAM

Q.11 Can H/W work without device driver?

Ans False

Q.12 Shortcut Key of folder creation?

Ans Ctrl+Shift+N

Q.13 Computer Shutdown Shortcut Key?

Ans Alt+F4

Q.14 Computer Refresh Shortcut Key?

Ans F5

Q.15 Which of the following is the example of volatile memory?

Ans SRAM, DRAM

Q.16 What is the use of Shift+ Delete?

Ans For permanent Delete

Q.17 What is the use of Ctrl+Z?

Ans For Undo

Q.18 Which of the following is the example of O.S?

Ans Window, Linux, Ms-Dos

Q.19 Ctrl+C used for?

Ans Copy

Q.20 What is the shortcut key of select all?

Ans Ctrl+A

Computer Fundamental MCQ Question Answer

2022-01-11T19:27:00.001+05:30

Q.1 Who is the developer of computer?

Ans Charles Babbage

Q.2 What is the full form of COMPUTER?

Ans Commonly Operating Machine Purposely Used For Education Research.

Q.3 The smallest unit of data in computer is?

Ans Bit

Q.4 In computer system, 1 Nibble equal to ?

Ans 4 Bits

Q.5 One byte equal to ?

Ans 8 Bits

Q.6 What is the full form of CPU?

Ans Central Processing Unit

Q.7 How many parts are there in CPU?

Ans Two

Q.8 The brain on any computer System is?

Ans CPU

Q.9 Which of he following is not a example of software?

Ans Mouse

Q.10 How many computer generation 's are there?

Ans Five

Q.11 What is the time period of first generation's Computer?

Ans 1946- 1959

Q.12 In first generation of computer, which technology was used?

Ans Vacuum Tube

Q.13 In Memory, full name of KB?

Ans Kilobyte

Q.14 1 KB equal to ?

Ans 1024 byte

Q.15 How many type of memory are there?

Ans Two

Q.16 Which of the following is the example of volatile memory?

Ans RAM

Q.17 RAM stands for?

Ans Random Access Memory

Q.18 Which of the following is the example of input devices?

Ans Keyboard, Mouse, Scanner

Q.19 CPU consist of?

Ans ALU + CU

Q.20 Which of the following is not component of computer System?

Ans Stepper Motor

Computer shortcut key

2021-12-11T15:53:00.002+05:30

1).Alt+f = File menu options in current program

2). Alt+E = Edit option in current program

3). F1 = universal help for all program

4). Clrl+A = select all text

5). Ctrl+x = Cut text item

6). Shift+del = cut selected item

7). Ctrl+C = copy selected item

8). Ctrl+Ins= copy seleted item

9). Ctrl+V = paste

10). Shift +ins= paste

11).Home = Go to beginning of current line

12). Ctrl +Home = Go to beginning of current document

13). End = Go to end of current line

14). Ctrl +End = Go to end of document

15). Shift +Home= Highlight from current position to beginning of line

16). Shift +End = Highlight from current position to end to line

What is RAM BCA Standerd

2021-12-11T11:37:00.004+05:30

Read Access Memory Definition:-

It is directly provides the required information to the processor RAM is volatile memory. Random Access Memory is a computer short term memory it uses to handle for all activity task app. One of your program files games work without Ram

Ram stands for:-

1). RAM is short form "random access memory "

2). RAM is the super fast temporary data

3). It is storage space that a computer need

4). It uses to handle all active task and app.

5). RAM is one of the most fundamental elements of computing.

Input output unit definition

2021-12-11T11:10:00.005+05:30

Input Output definition :-

Input unit :-The computer accepts coded information through input unit by the user. It is a device that is used required information to the computer for example keyboard, mouse etc.

Output unit :- The output unit sends the process result to the user. It is mainuly used to display. The describe result to the user As per input instructions video monitor, printer and plotter etc.

CPU ( Central processing unit):-

The central processing unit Consist set of register, arthmatic and control circuits which together interpret and excutes instructions in assembly language.

Main memory:- Primary memory or main memory of the computer is used to store the data and instructions during execution of the instructions. The primary memory is of types random access memory.

Controlling :- Controlling is the process of computer. The actual performance with the standard set by the company to make sure that activities are performed.

CU (Control unit) :-

control unit coordinate with the input output devices of a computer. It is directs the computer to carry out stored program instructions by communicating with the ALU the register. It organise the processing of data and instructions.

Computer hardware and software instillation from ITI level

2021-12-11T10:37:00.005+05:30

computer hardware and software instillation :-

Operating system :- A operating system is system software.That is manages computer provide common service for computer program.

Types of software :-

Software can be divided into two major categories.

1). System software

2). Application software

1).System software :- System software consist of serial program which are directly responsible for controlling integration and managing. The individual hardware components of computer system.

2).Applications software :-Application software is a computer software designed to help the user to perform singular or multiple tasks. It is a set of instructions or program designd for specific user or application.

Write a program multi dimensional Array (BCA 2 semester)

2021-09-26T12:15:00.002+05:30

write a program multi dimensional Array:-

# include<stdio.h>

#include< conio.h>

void main ()

{

float a[5] , sum=0,I;

printf ( "enter number");

for (i=0; i=5,i++)

{

scanf ("% f ", & a [i]);

printf("% f ",sum);

getch ();

}

Definition of Router, Modem, flooding Gateway (BCA 6th semester)

2021-09-26T11:57:00.003+05:30

Definition of Gateway:-

Gateway is the connection oriented services which works on application layer protocols. The getway connection between source to destination through different network protocols and different physical device.

Definition of router:-

Router is a network layer method which provide a path for transfer different data from sender to receiver and reduce the network traffic. It include different components that is CPU primary memory, operating system network connection and OSI model.

Definition of flooding:-

It is static routing algorithm was transferred different information from sender to receiver and general that duplicate number of lines from packet and information.

Definition of modem:-

Modem is a physical device which modulate analog signals to encode Digital information and decode signals to record the transmitted information. The basic of modem to create a signal which easily transmitted to original digital data. It is consist of different which Express by bits pin second. The modem refers to direction of flow the data in transmission mode with the helf modem and full Modem.

What is network layer

2021-09-26T11:45:00.004+05:30

definition of Network layer:-

A network layer responsible to create a path between sender to receiver. Through different component which ensures to success transfer different data and information.

The common use of network layer stablish communication oriented service through internet protocol.It is consist of two main function that is.

A). Logical address of sender to receiver and path between two different network. The network layer service has been design with the following reasons.

a). The service should be independent of subnet technology.

b). The transport layer should be dependent on number type and technology.

c). The network layer provide the service to the transport layer.

B). Routing algorithm:- The main function of network layer routing packet from sources to destination machine through different path which create by network layer through protocol.

Component of network layer:-

A). Reapters:- Reapters is a physical device which re- genral weak signals from transfer sender to receiver.It is physical layer device which use amplifier to re- generate weak signals to strong signal.

B). Bridges:- Bridges are data communication device which operate I'm OSI reference model for the purpose of connect.

C). Gateway:- Gateway is the connection oriented service which works on application layout protocols that we create a connection between source to destination throw different network protocols and different physical device.

D). Router:- Router is a network player method which provide a path for transfer different data from sender to receiver and reduce the network traffic. It includes different component that is CPU, primary memory, operating system, network connection and OSI model.

E). Flooding:- It is static routing algorithm which transfer different information from sender to receiver and generate the duplicate number of lines from packet and information.

F). Modem :- modem is a physical device which modulate analog signals to encode Digital information and the module signals to record the transmitted information. The basic of modem to create a signal which easily transmitted to original digital data.

WAP string reverse and ? BCA-2nd semester.

2021-09-25T21:31:00.000+05:30

WAP String Reverse:-

#include<studio.h>

#include<conio.h>

void main ()

{

char a[100];

printf("enter a string\ n");

get(a);

strrev(a);

printf("Reverse string%s\n",a);

getch();

}

Output of string reverse:-

Enter a string

ABC

Reverse string= CBA

What is file handling and hashing function? BCA-2nd semester).

2021-09-12T15:25:00.001+05:30

Definition of file handling:-

A program accept the input data from keyboard at the time and execution the main limitation and what's the approach is that is very difficult of handle large volume and data Therefore if the data is entered in computer memory then check the correctness of data about put off a program may become input and another program in this situation it is more efficient to store different operation of a program in a dice the processing of file involves following steps.

1). Naming a file

2).Open a file

3).Read the date of Roma File

4).Write data to a file

5).Closing a file

There are two different ways to perform the file operation in C language.

1). What's the first operation now as low level input output operation and use unique system the second method is high level input output operation and use input output library function.

function name operation

f open() open a current file

f close () close a file

getch () Read a character

put() write a character

f printf() write set of data

f scanf() read a set of data

Definition of Hashing function:-

A searching value depand on the number of elements in the collection of data.This data discuss the searching techniques known as hashing function. There are two principles used for selection a hashing function.

1). Function should be very easy and quick to complete.

2).The function should be describe address of value.

There are three main method define a hashing function.

1). Division method

2). mid- sequence method

3). Folding method

WAP dynamic memory example? BCA-2nd semester

2021-09-12T15:25:00.000+05:30

Dynamic memory example ( pointer)

#include<studio.h>

#include<conio.h>

#include<stdlib.h>

void main ()

{

int n, I, *p,s=0;

printf ("enter number");

scanf ("%d",& n);

p= (int*) malloc (n* size of (int));

if( p==null)

{

printf("error! memory not allocated");

exit(0);

}

printf ("enter element of array");

for (I=0;I<n;i++)

{

scanf ("%d", p+i);

sum+=*(p+i);

}

printf ("%d", sum);

free(p);

getch ();

}

WAP file handling program? (BCA 2nd semester)

2021-09-05T17:13:00.001+05:30

WAP file handling program

#include<stdio.h>

#include<conio.h>

void main ()

{

file* fp;

char ch;

fp= fopen ("one.text", "w");

printf( "enter data");

while ((ch=get char())!=EOF)

{

putc(ch,fp);

}

fclose (fp);

fp= fopen("one.txt","r");

while ((ch=getc() !=EOF)

printf ("%c",ch);

fclose (fp);

getch ();

}

What is Dynamic memory allocation? BCA 2nd semester.

2021-09-05T17:13:00.000+05:30

Daffination of Dynamic memory allocation:-

There are four library routines function which can be used for allocating and memory during when the program run.

1). Malloc() function:- It is used to allocate a block of memory at run at run time.

ptr= ( type*) malloc (byte-size)

2). Calloc() function:- It is memory allocation function used to allocate memory at run time.

ptr=(type*) calloc (n, e size)

3). free() function:- it is memory function release previous allocated space.

4). Realloc () function:- User can change the memory size already allocated with the help of function.

Daffination of Dynamic memory allocation:-

There are four library routines function which can be used for allocating and memory during when the program run.

1). Malloc() function:- It is used to allocate a block of memory at run at run time.

ptr= ( type*) malloc (byte-size)

2). Calloc() function:- It is memory allocation function used to allocate memory at run time.

ptr=(type*) calloc (n, e size)

3). free() function:- it is memory function release previous allocated space.

4). Realloc () function:- User can change the memory size already allocated with the help of function.

X=(int*) realloc (x,5); X=(int*) realloc (x,5);

Structure and union different? BCA 2nd semester

2021-09-02T20:12:00.000+05:30

Structure Points:-

1).keyword struct define a keyword

structure.

2).The size of a structure is the sum of all the members.

3). member of a structure can be initialized at one

4).It supports only assignment=and size of operators.

5). struct name

{

int val;

float val;

char *p;

}s;

6). structure each member get separate space in memory.

Union points:-

1). keyword union define a union.

2). The size of a union contain smaller members.

3). union may only initialized with a value.

4).It supports only assignment=and size of operators

5). union name

{

int val;

float val;

char*p;

}u;

6). The total special allocated equal to the member with large size.

What is pointers? BCA 2nd semester

2021-09-02T20:11:00.002+05:30

Definition of pointer:-

A pointer is a drive user define data type in C language. It store address of another variable in computer memory. Pointer can be used to access and manipulate data stored in memory.

The Syntex of declaring pointers variable in C - language.

data type*pointers variable

int* p;

Example:-

int a;

int*p;

p=& a;

Address of operator(&):- user can determine address of a variable with the help of the operator available in C. The operator immediately preceding a variable return the address of the variable return the address of the variable associated within.

Advantage of using pointer:-

1). It is more efficient in handling arrays & data tables.

2). It can be used to return multiple value.

3). It support dynamic memory management operators.

4). pointer increase the execution speed.

5). It provides efficient tools for manipulate.

6). It reduces the length of program.

What is string? BCA 2nd semester.

2021-09-02T20:11:00.001+05:30

Definition of String character :-

It is a collection (set) of character with a double quotations system a string variable is always declared as an array.

char string - variable [size]

char name [25];

char name [10]="UNIVERSITY";

Compiler provides a null character('0') at the end of the string.

Standard library function:-

1).strlen() function:- This function find the length of the string. It count and return the number of character present in a string.

n= strlen (strings);

2). strcat() function:- This function joint two string together. It take two arrangement and joint two source string to end of target string.

strcat( string 1 , string 2);

3). strcmp() function:- This function compare two string to find out the source string are same or different. If the string are same if return a value 0.

strcmp(string 1, string 2);

4). strcpy() function:- This function copy a string value to another string value.

strcpy( string 1, string 2);

5). strrev() function:- this function reverse the string all the character in the given string.

strrev( string- variable);

Define network layer? BCA 6th semester.

2021-09-02T20:11:00.000+05:30

definition of Network layer:-

A network layer responsible to create a path between sender to receiver. Through different component which ensures to success transfer different data and information.

The common use of network layer stablish communication oriented service through internet protocol.It is consist of two main function that is.

A). Logical address of sender to receiver and path between two different network. The network layer service has been design with the following reasons.

a). The service should be independent of subnet technology.

b). The transport layer should be dependent on number type and technology.

c). The network layer provide the service to the transport layer.

B). Routing algorithm:- The main function of network layer routing packet from sources to destination machine through different path which create by network layer through protocol.

Component of network layer:-

A). Reapters:- Reapters is a physical device which re- genral weak signals from transfer sender to receiver.It is physical layer device which use amplifier to re- generate weak signals to strong signal.

B). Bridges:- Bridges are data communication device which operate I'm OSI reference model for the purpose of connect.

C). Gateway:- Gateway is the connection oriented service which works on application layout protocols that we create a connection between source to destination throw different network protocols and different physical device.

D). Router:- Router is a network player method which provide a path for transfer different data from sender to receiver and reduce the network traffic. It includes different component that is CPU, primary memory, operating system, network connection and OSI model.

E). Flooding:- It is static routing algorithm which transfer different information from sender to receiver and generate the duplicate number of lines from packet and information.

F). Modem :- modem is a physical device which modulate analog signals to encode Digital information and the module signals to record the transmitted information. The basic of modem to create a signal which easily transmitted to original digital data.

Standerd function of file handling. BCA 2nd sem

2021-08-27T20:04:00.001+05:30

Types of standard function of file handling:-

1). fopen() function

2). fclose () function

3). feof() function

4). fseek() function

5). frewind() function

6). fscanf() function

7). f getch()

8). f put()

Define types of standard function of file handling:-

1). fopen () function:- This function is used to open a file through function open Syntex.

fp= fopen ("file name"," file-type");

2). fclose () function:- This function is used to close the file after reading and writing operation are over.

fclose (file-pointer);

3). feof () function:- This function is used to check the file pointer is at the end of file or not.

4). fseek() function:- This function allows us to read from or write to any point in the stream of bytes to opend by using the fopen() function. It more the file pointer position to the described location in the file.

fseek (fptr, offset, position);

5). frewind:- This function is used to bring the file pointer at the beginning of file.

frewind (fp);

6). fscanf():- This function read a number of value from a file. The first argument of a function is file pointer.

fscanf ( fptr, "stg", var1, var 2.-----);

7). fgetch ():- read a character.

8). fput ():- writes a character.

What do you mean by electronic payment system? BCA 6th semester).

2021-08-27T11:30:00.000+05:30

Electronic payment system definition:-

Electronic payment system provide the basic concept of electronic commerce road the created system which developed by electronic taken in the form of electronic cash money and check the electronic token sad three types.

1). Cash or real time

2). Debit or prepared in

3). Credit or postpaid

Component of electronic payment system:-

1). Hardware

2). Software

3). Networking

4). Internet

5). plastic money

Features of electronic payment system:-

1). Continuous

2). Flexible

3). Safety and security

4). Accept

5). convert

6). Reliability

Advantage of electronic payment system:-

1). Complete online payment

2). Safe private and easy to use

3). user friendly service

4). Two decrease the change of identify person

5). Increase confidence between two or more person.

dis Advantage of electronic payment system:-

1). Virus

2). Hydrator and software failure

3). Limited use of money

4). Cyber crime

Method of electronic payment system:-

1). Electronic funded transfer:- in this method all payments transfer from one percent to another person with the help of online method throw e check.

application of e-commerce:-

1). Fix government is structure with the help of rules and regulation.

2). Accept problem to manage by government agenda.

3). Authority and responsibility.

4). Provide proper result and measurement tools.

2).Automatic payment schedule:- in this method customer to center payment when customer pay a bill throw a regular schedule directly from your checking account to your credit card.

WAP string length? BCA- 2sem

2021-08-27T11:29:00.000+05:30

WAP string length:-

#include<stdio.h>

#include<conio.h>

void main ()

{

char a [100];

int l;

printf(" enter a string\n");

gets(a);

l= strlen(a);

printf("Length of string=%d/n",l);

getch();

}

output of string length:-

enter string = string

l= 6

What is macro? Discuss the advantage & disadvantage.

2021-08-24T13:40:00.003+05:30

Definition of macro:-

Macro are single identifies that are equal to complete statement as group of statement. Macro are user define constore program used in define statement through the pre- processor.

Types of Macro:-

1). simple macro

# define PI 3.14

2). Argument macro

# define identifiers ( Arg list)

3). Nested macro

# define max (x,y)

Advantage of Macro:-

1). Macro reduced the time delay assosiate with the function.

2). It increases execution time & speed.

3). It makes the program easy.

Disadvantage of Macro:-

1). Macro cannot use itself.

2). A Macro identified is not Association with an address.

Example of Macro:-

/* Area of a circle*/

#include <studio.h>

#include<conio.h>

#define PI 3.14

void main ()

{

int r;

float A;

printf(" enter the radius");

scanf ("%d",& r);

A= PI *r*r ;

printf ("% f ", A);

getch ();

}

What is structure of C?(BCA-2 semester)

2021-08-24T12:06:00.005+05:30

Definition of structure of C:-

Document section

link section

define section

main function

{

Body of program

}

program to find radius of circle:-

# include<studio.h>

#include<conio.h>

void main()

{

int r;

float A;

printf( "enter the radius")

scanf("%d; & r);

A= 3.14*r*r;

printf("%f", A);

getch ();

}

operation on bit:-

AND &&

OR ll

NOT!

1 complement A

2 complement A+1

What you mean by structure and union? (BCA- 2 semester)

2021-08-24T11:49:00.006+05:30

Definition Structure:-

user need to store large amount of data in a 'C' long it used Aryan working a group data and value but structure describe different type of elements structure is a user defined data type which consider other data type it provide facility to store data and manage properly.

Syntax of structure:-

strict structure name

{

member elements

int

char

float

string

} structure tag;

example of structure:-

strict book- bank

{

char title[10];

int page[5];

float price;

};

Definition of Union:-

It is same as structure and have same Syntex, There is a major different between structure and union. In terms & storage data. In union all members variable allocate same memory in data structure.

Syntex of union:-

union union- name

{

int

char

float

string

} union tag;

example of union:-

union book

{

int bcode;

float price;

}

What do you mean by secure SET( BCA-6th semester)

2021-08-23T18:25:00.002+05:30

Definition Secure electronic transaction:-

protocols for security credit card transaction over the network with the help of internet service it is not payment system but it is set of security of protocols and format which enable used to employer current credit payment instruction on an open network it is standard which ensure that is credit card and association payment order information transfer safety and security between the world virus person and internet.

Features of secure electronic transaction:-

1). continues

2). Flexible and portable

3). Card holder

4). Payment

objective of secure electron transaction:-

1). Provide the authority to card holder is the limited use of branch payment

2). Protocols which other depend on safety and security

3). Provide confidence to cut holder

4). Independent software requirement payment

5). Create relationship between different bank authority.

Basic requirements of Secure election transfer:-

1). Online transaction

2). use Plastic money

3). Provide confidence of payment

4). Flexibility and portability

5). Limited use of money