Free Printable Computer Awareness Quiz 5

1.

The most commonly used numbering system in real life is ___ number system.

a)

Decimal

b)

Binary

c)

Hexadecimal

d)

Octal

2.

Convert the 8-bit binary number 1001 1011 to a 2-bit hexadecimal number.

a)

9B

b)

9C

c)

8F

d)

9D

3.

Which of the following is NOT a binary number?

a)

1111

b)

101

c)

11E

d)

000

4.

The left most bit in Binary number system is called as

a)

Most Significant Bit (MSB)

b)

Least Significant Bit (LSB)

5.

Consider the following 8 bit binary number and identity whether it is positive or negative.

11000101₂

a)

+ve

b)

-ve

6.

Convert the decimal number 255 to an 8-bit binary number.

a)

1111 1111

b)

1111 1110

c)

1111 1101

d)

1110 1111

7.

Convert the 8-bit binary number 1101 1001 to a decimal number.

a)

217

b)

216

c)

209

d)

201

8.

Convert the 1-bit hexadecimal number A to a decimal number.

a)

10

b)

9

c)

11

d)

12

9.

Convert the octal number 76 to hexadecimal.

a)

AF

b)

2D

c)

4B

d)

3E

10.

Convert the binary number 110101 to octal.

a)

081

b)

056

c)

065

d)

073

11.

Convert the decimal number 27 to binary.

a)

11011

b)

10101

c)

11100

d)

10011

12.

Convert the octal number 34 to hexadecimal.

a)

2F

b)

3A

c)

38

d)

4B

13.

Which logic gate is this?

a)

AND

b)

OR

c)

NOT

d)

NAND

14.

What type of logic gate is this table showing?

a)

NOT

b)

OR

c)

AND

d)

NAND

15.

How many different combinations of 1 and 0 are possible with 2 bits?

a)

1

b)

2

c)

3

d)

4

16.

Which of the following two input logic functions can act as a Universal gate?

a)

A ⊕ B

b)

AB

c)

(A+B)’

d)

None of the above

17.

A NAND gate is called a universal logic element because

a)

All digital computers use NAND gates

b)

All the minimisation techniques are applicable for optimum NAND gate realisation

c)

Everybody use this gate

d)

Any logic function can be realized by NAND gates alone

18.

When A and B represent the inputs of an Exclusive OR logic gate ,its output O will be

a)

O=AB’+A’B

b)

O=AB+A+B

c)

O=A+B+(AB)'

d)

None of these

19.

A Boolean expression...

a)

Fixes any errors in the line of code

b)

Sets everything in it equal to each other

c)

Checks if something is true or false

d)

Loops the program to continue infinitely

20.

X . X

a)

0

b)

1

c)

X

d)

__
X

21.

A . ( B + C )
is the same as

a)

___________
A + B + C

b)

( A + B ) ( A + C)

c)

A . B . C

d)

( A . B ) + ( A . C )

22.

1. The Demorgan’s law (AB)' = -----------

a)

A'+B'

b)

A+B

c)

A+B'

d)

A'+B

23.

In Boolean expression A+AB simplifies ____

a)

A

b)

B

c)

A+B

d)

1

24.

In Boolean Algebra A + 1 =?

a)

0

b)

1

c)

A

d)

None

25.

Which law is this an example of:

A(B+C) = (A.B)+(A.C)

A+(B.C) = (A+B).(A+C)

a)

Associative

b)

Commutative

c)

Absorption

d)

Distributive

26.

An equivalent representation for the boolean expression x.y+x.y.z

a)

x.y

b)

x.y.z

c)

1

d)

x.y.1

27.

___________ INVENTED THE MODERN BINARY NUMBER SYSTEM.

a)

GOTTFRIED LEIBNIZ

b)

WILLIAMS

c)

HENRY

d)

FORD

28.

Which of the following is an example of 'main memory'.

a)

Hard Drive

b)

USB Drive

c)

RAM

d)

ROM

29.

The fastest memory in the computer system is _____________

a)

ROM

b)

RAM

c)

Cache

d)

None of these

30.

The set of wires, which carry information in a controlled manner, is called

a)

System bus

b)

Public bus

c)

Private bus

d)

None of these

31.

The ___________ informs the CPU about the location of the data residing in the memory.

a)

Data bus

b)

Address bus

c)

Cache

d)

Control line

32.

The length size of a register is called..

a)

word limit

b)

word size

c)

register limit

d)

register size

33.

Register that is used to hold the memory address of the next instruction to be executed is----------------

a)

Program Memory

b)

Program Counter

c)

Control Unit

d)

Instruction Decoder

34.

Which register is used to store the output generated by ALU?

a)

Special Function Register

b)

Timer Register

c)

Accumulator

d)

Stack Pointer

35.

____________ retrieves the data from the storage unit and performs the arithmetic calculations and/or comparisons on them and the processed data is then sent back to the storage.

a)

Control Unit

b)

Arithmetic Logic Unit

c)

Memory Unit

d)

None of the above

Computer Awareness Quiz 5

Total questions: 35

Worksheet time: 18mins

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