Explore topic-wise MCQs in Computer.

This section includes 54 Mcqs, each offering curated multiple-choice questions to sharpen your Computer knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following is a binary number equivalent to octal number (431)8

A. (100011001)
B. (.100011001)
C. (100110100)
D. (.100110001)
E. (1000.11001)
Answer» C. (100110100)
Discussion
2.

Which of the following is an octal number equal to decimal number (896)10 ?

A. 0061
B. 6001
C. 1006
D. 1600
E. 0601
Answer» E. 0601
Discussion
3.

Which of the following is octal number equivalent to binary number (110101)2 ?

A. 12
B. 65
C. 56
D. 1111
E. 00
Answer» C. 56
Discussion
4.

Which of the following is hexadecimal number equivalent to binary number (1111 1001)2 ?

A. 9F
B. FF
C. 99
D. F9
E. FC
Answer» E. FC
Discussion
5.

Conversion of decimal number (42)10 to its octal number equivalent is

A. (57)
B. (42)
C. (47)
D. (42)
E. None of these
Answer» E. None of these
Discussion
6.

Determine the octal equivalent of (432267)10

A. (432267)
B. (346731)
C. (2164432)
D. (123401)
E. None of these
Answer» F.
Discussion
7.

(1010)2 equivalent decimal number is

A. 8
B. 9
C. 10
D. 11
E. 12
Answer» D. 11
Discussion
8.

Conversion of decimal number (99)10 to its binary number equivalent is

A. (1100011)
B. (100011)
C. (1110001)
D. (1111000)
E. None of these
Answer» B. (100011)
Discussion
9.

Conversion of octal number (3137)8 to its decimal equivalent is

A. (1631)
B. (1632)
C. (1531)
D. (1931)
E. None of these
Answer» B. (1632)
Discussion
10.

Determine the decimal equivalent of (456)8

A. (203)
B. (302)
C. (400)
D. (402)
E. None of these
Answer» C. (400)
Discussion
11.

Conversion of decimal number (93)10 to hexadecimal number is

A. (2D)
B. (5D)
C. (62)
D. (31)
E. None of these
Answer» C. (62)
Discussion
12.

The most widely used code that represents each character as a unique 8-bit code is

A. ASCII
B. UNICODE
C. BCD
D. EBCDIC
E. None of these
Answer» B. UNICODE
Discussion
13.

Conversion of decimal number (71)10 to its binary number equivalent is

A. (110011)
B. (1110011)
C. (0110011)
D. (1000111)
E. None of these
Answer» E. None of these
Discussion
14.

Conversion of decimal number (61)10 to its binary number equivalent is

A. (110011)
B. (11001110)
C. (111101)
D. (11111)
E. None of these
Answer» D. (11111)
Discussion
15.

Decimal equivalent of (1111)2 is

A. 11
B. 10
C. 1
D. 15
E. 13
Answer» E. 13
Discussion
16.

Conversion of binary number (1001001)2 to hexadecimal is

A. (40)
B. (39)
C. (49)
D. (42)
E. None of these
Answer» D. (42)
Discussion
17.

Conversion of binary number (101110)2 to hexadecimal is

A. (35)
B. (46)
C. (2E)
D. (50)
E. None of these
Answer» D. (50)
Discussion
18.

The...........indicates how much data a particular storage medium can hold.

A. Access
B. Capacity
C. Memory
D. Storage
E. None of these
Answer» C. Memory
Discussion
19.

How many options does a binary choice offer ?

A. One
B. Two
C. Three
D. It depends on the amount of memory in the computer
E. None of these
Answer» C. Three
Discussion
20.

A string of eight 0s and 1s is called a...........

A. Megabyte
B. Kilobyte
C. Gigabyte
D. Byte
E. None of these
Answer» E. None of these
Discussion
21.

The smallest unit of information a computer can understand and process is known as a......

A. Digit
B. Kilobyte
C. Bit
D. Byte
E. None of these
Answer» D. Byte
Discussion
22.

Decimal number system is the group of ........ number

A. 0 to 1
B. 0 to 9
C. 0 to 7
D. 0 to 9 and A to F
E. None of these
Answer» C. 0 to 7
Discussion
23.

One megabyte is equal to approximately ............

A. 1000 bits
B. 1000 bytes
C. 1 million bytes
D. 1 million bits
E. 2000 bytes
Answer» D. 1 million bits
Discussion
24.

Hexadecimal number system has .... base.

A. 2
B. 8
C. 10
D. 16
E. None of these
Answer» E. None of these
Discussion
25.

One thousand bytes is a...........

A. Kilobyte
B. Megabyte
C. Gigabyte
D. Terabyte
E. None of these
Answer» B. Megabyte
Discussion
26.

A....is approximately one billion bytes.

A. Kilobyte
B. Bit
C. Gigabyte
D. Megabyte
E. None of these
Answer» D. Megabyte
Discussion
27.

The smallest unit in a digital system is a.....

A. Byte
B. Kilobyte
C. Word
D. Character
E. Bit
Answer» F.
Discussion
28.

To calculate perform calculation and store data computer user ... number system.

A. Decimal
B. Hexadecimal
C. Octal
D. Binary
E. None of these
Answer» E. None of these
Discussion
29.

The computer abbreviation KB usually means..........

A. Key Block
B. Kernel Boot
C. Kilobyte
D. Kit Bit
E. None of these
Answer» D. Kit Bit
Discussion
30.

Computers use the .........system to process data.

A. processing
B. kilobyte
C. binary
D. representational
E. None of these
Answer» D. representational
Discussion
31.

In the binary language, each letter of the alphabet, each number and each character is made up of a unique combination of .........

A. eight byte
B. eight kilobytes
C. eight characters
D. eight bits
E. None of these
Answer» E. None of these
Discussion
32.

A computer works on a........number system

A. Binary
B. Octal
C. Decimal
D. Hexadecimal
E. None of these
Answer» B. Octal
Discussion
33.

What is the value of the binary number 101 ?

A. 3
B. 5
C. 6
D. 101
E. 7
Answer» C. 6
Discussion
34.

Which of the following is octal number equivalent to binary number (110101)

A. 12
B. 65
C. 56
D. 1111
E. 00
Answer» C. 56
Discussion
35.

Which of the following is hexadecimal number equivalent to binary number (1111 1001)

A. 9F
B. FF
C. 99
D. F9
E. FC
Answer» E. FC
Discussion
36.

Which of the following is an octal number equal to decimal number (896)

A. 0061
B. 6001
C. 1006
D. 1600
E. 0601
Answer» E. 0601
Discussion
37.

Which of the following is invalid hexadecimal number ?

A. A0XB
B. A0F6
C. 4568
D. ACDB
E. 60AC
Answer» E. 60AC
Discussion
38.

Which of the following is a hexadecimal number equal to 3431 octal number ?

A. 197
B. 917
C. 791
D. 971
E. 719
Answer» F.
Discussion
39.

There are how many types of number system ?

A. One
B. Two
C. Three
D. Four
E. Five
Answer» E. Five
Discussion
40.

How many values can be represented by a single byte ?

A. 4
B. 16
C. 64
D. 256
E. 512
Answer» E. 512
Discussion
41.

Which of the following is not a computer code ?

A. EBCDIC
B. ASCII
C. CISC
D. UNICODE
E. None of these
Answer» D. UNICODE
Discussion
42.

Today's mostly used coding system is / are

A. ASCII
B. EBCDIC
C. BCD
D. Both '1' and '2'
E. All of these
Answer» E. All of these
Discussion
43.

(1010)

A. 8
B. 9
C. 10
D. 11
E. 12
Answer» D. 11
Discussion
44.

Data representation is based on the ..... number system, which used tow numbers to represent all data

A. binary
B. biometric
C. bicentennial
D. byte
E. None of these
Answer» B. biometric
Discussion
45.

A device that converts from decimal to binary number is known as

A. instructor
B. decoder
C. AND gate
D. converter
E. decoder
Answer» E. decoder
Discussion
46.

To perform calculation on stored data computer uses ........number system.

A. decimal
B. hexadecimal
C. octal
D. binary
E. None of these
Answer» E. None of these
Discussion
47.

Which of the following is a binary number

A. 36
B. 10
C. 45
D. 29
E. 12
Answer» C. 45
Discussion
48.

A hexadigit can be represented by

A. three binary (Consecutive) bits
B. four binary (Consecutive) bits
C. eight binary (Consecutive) bits
D. sixteen binary (Consecutive) bits
E. None of the above
Answer» E. None of the above
Discussion
49.

Computer uses the ........ number system to store data and perform calculations

A. binary
B. octal
C. decimal
D. hexadecimal
E. None of these
Answer» B. octal
Discussion
50.

Decimal equivalent of (1111)

A. 11
B. 10
C. 1
D. 15
E. 13
Answer» E. 13
Discussion