General Computer Knowledge

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Information stored in computer is in

A)
Hexadecimal form

B)
Integer form

C)
Binary form

D)
Character form


Correct Answer :

Binary form


Explanation :

In the computer it's all 0's and 1's , which is binary.
The information stored in a computer be encoded as a sequence of 0's and 1's, as all storage devices consist of a set of locations that can have one of two possible states. One state represents 0, the other state represents 1

Which of the following memory is refreshed a number of times per second

A)
Hard disk

B)
RAM

C)
ROM

D)
Dynamic RAM


Correct Answer :

Dynamic RAM

Time taken to position the Read/Write head at the desired track of disk is known as

A)
Access time

B)
Seek time

C)
Latency time

D)
Data transfer time


Correct Answer :

Seek time


Explanation :

Seek time – the time taken to position the head at the desired track where the data is to be read or write.
Latency time– he time taken by the beginning of the sector to reach the read/write heads
Transfer time – time required for number of bytes to be transferred under the head

Disk Access Time = Seek Time + Rotational Latency + Transfer Time

Which of the following symbols are used in Assembly Language

A)
Tags

B)
Numbers

C)
Characters

D)
Mnemonics


Correct Answer :

Mnemonics


Explanation :

Mnemonics are predefined assembly-language names for machine instructions, pseudo-ops, directives, and data allocation statements. Mnemonics are not case-sensitive.

DMA controller is used in a computer to transfer the data

A)
From main memory to CPU

B)
From hard disk to main memory

C)
From ROM to RAM

D)
All options are correct


Correct Answer :

From hard disk to main memory


Explanation :

DMA is a method that allows an input/output device to send or receive data directly to or from the main memory, bypassing the CPU to speed up memory operations. The process is managed by a chip known as a DMA controller.

What are universal gates

A)
NOT, OR

B)
NAND, NOR

C)
XOR, NOT

D)
XNOR, AND


Correct Answer :

NAND, NOR


Explanation :

A gate which can be use to create any Logic gate(NOT,AND,OR,XOR & XNOR) is called Universal Gate .The NAND and NOR gates are universal gates.

1 TB =______ Byte

A)
220

B)
230

C)
240

D)
250


Correct Answer :

240


Explanation :

1 byte = 8 bits
1 kilobyte (K / Kb) = 210 bytes = 1,024 bytes
1 megabyte (M / MB) = 220 bytes = 1,048,576 bytes
1 gigabyte (G / GB) = 230 bytes = 1,073,741,824 bytes
1 terabyte (T / TB) = 240 bytes = 1,099,511,627,776 bytes

Which memory is used for storing programs that are not to be changed

A)
ROM

B)
RAM

C)
Monitor

D)
Cache Memory


Correct Answer :

ROM


Explanation :

Read Only Memory: ROM is non-volatile memory, which do not loose their content on failure of power supply.

A ROM is a form of semiconductor memory technology used where the data is written once and then not changed.

Conceptual design of the database is done with the help of

A)
Data marts

B)
Data models

C)
DFD

D)
Flowchart


Correct Answer :

Data models


Explanation :

Data modeling is a process of designing and developing a data system to support the various business processes of the oraganisation . It represents the nature of data, business rules that are applicable to data, and how it will be organized in the database.

Primary means of searching the records from database is called as

A)
Candidate Key

B)
Primary Key

C)
Foreign Key

D)
Alternate Key


Correct Answer :

Primary Key

What is the Output of the following C Program?
void main ( )
{
int i=6;
Printf (“ %d %d”, ++i, ++i);
}

A)
78

B)
87

C)
88

D)
Output many vary from computer to computer


Correct Answer :

78

What is the output for the following ‘C’ code?
Void main ( )
{
float i = 0.9;
if ( i < 0.9 )
printf (“Good”);
else
printf (“very good”);
}

A)
Good

B)
very good

C)
0.9

D)
Printf


Correct Answer :

very good

Which of the following C statement is used to print the values of a, b and c?
int a = 27;
float b = 5.14;
double c =5.24;

A)
printf (“%d %f %f ”, a,b,c) ;

B)
printf (“%d %f %lf ”, a,b,c) ;

C)
printf (“%d %f %d”, a,b,c) ;

D)
printf (“%lf %f %f ”, a,b,c) ;


Correct Answer :

printf (“%d %f %lf ”, a,b,c) ;

"Continue" keywords in 'C' is used to transfer the control to the beginning of

A)
loop

B)
program

C)
if statement

D)
main() function


Correct Answer :

loop

The execution of a ‘C’ program starts from

A)
scanf() function

B)
main() function

C)
library function

D)
do-while loop


Correct Answer :

main() function

A function of a ‘C’ program cannot return more than

A)
One value

B)
Two values

C)
Three values

D)
Four values


Correct Answer :

One value

Full form of BIOS is

A)
Bigger Input or Smaller

B)
Basic Input and Output Sum

C)
Better Input and Output System

D)
Basic Input Output System


Correct Answer :

Basic Input Output System


Explanation :

BIOS, which stands for Basic Input Output System, is software stored on a small memory chip on the motherboard. which can change how the device works or to assist in troubleshooting a problem.

Union in ‘C’ is

A)
Used to store different members at same memory location

B)
A primitive data type

C)
A text file

D)
A variable of long integer type


Correct Answer :

Used to store different members at same memory location

Which of the following linear data structure allow both insertion and deletion at only one end

A)
Queue

B)
Stack

C)
Circular queue

D)
Tree


Correct Answer :

Stack

From which end of the Queue elements are deleted?

A)
Rear

B)
Front

C)
Middle

D)
Any Position


Correct Answer :

Front

The access of queue element is

A)
Sequential

B)
Random

C)
Direct

D)
Indexed


Correct Answer :

Sequential

Which searching algorithm need sorted list?

A)
Sequential search

B)
Hashing

C)
Binary Search

D)
None of these


Correct Answer :

Binary Search

Which term does not relate to stack?

A)
FIFO

B)
LIFO

C)
POP

D)
PUSH


Correct Answer :

FIFO

Postfix notation for A + (B*C) - D is as follows

A)
ABC*D-+

B)
A+BC*-D

C)
AB+C*-D

D)
None of these


Correct Answer :

ABC*D-+

Postfix notational expressions are stored in the following data structure

A)
Queue

B)
linked list

C)
Stack

D)
Doubly linked list


Correct Answer :

Stack

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