Number System Computer MCQ Questions and Answers

Number System Computer MCQ. Questions with answers on Theory of Binary, Octal, Decimal and Hexadecimal. Basic theoretical Question for All Competitive Exams Preparation.

1. NUMBER SYSTEM in Computer Theoretical Question for All Exams

1. What is the minimum and maximum value in Octal Number System?
a) 1 to 8
b) 0 to 7
c) 2 to 9
d) None of the above
Ans. b

Values in Different Number System
Binary 2 (0,1)
Octal 8 (0,1,2,3,4,5,6,7)
Decimal 10 (0,1,2,3,4,5,6,7,8,9)
Hexadecimal 16 (0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F)

2. What number system is not understood by C language compiler directly?
a) Decimal
b) Octal
c) Binary
d) Hex Decimal
Ans. c
Explanation: Yes, C language can not understand Binary language directly. Because C language is a High
level language

3. Numbers are stored and transmitted inside a computer in which format?
a) binary form
b) ASCII code form
c) decimal form
d) alphanumeric form
Ans. a

4. The value of radix in binary number system is ___
a) 2
b) 8
c) 10
d) 1
Ans. a
Explanation: In a binary number system, the value of base or radix is 2. The binary system uses only two digits for the
representation of numbers.

5. A computer language that is written in binary codes only is _____
a) machine language
b) C
c) C#
d) Pascal
Ans. a
Explanation: Machine Language is written in binary codes only. It can be easily understood by the computer and is
very difficult for us to understand. A machine language, unlike other languages, requires no translators or interpreters.

2. 6. A bit in a computer terminology means either 0 or 1.
a) True b) False
Ans. a
Explanation: A bit stands for a binary digit. A binary digit can have only two digits i.e. 0 or 1.

7. Which of the following is not a binary number?
a) 1111 b) 101 c) 11E d) 000
Ans. c
Explanation: Alphabets are only allowed in the hexadecimal number system.

8. One Nibble contain the number of bits equal to
a) 2 b) 4 c) 8 d) 16
Ans. b

9. The String of 8 bits is known as
a) Nibble b) Byte c) Octed d) Quad
Ans. b

10. The 1’s complement of a binary number is obtained by changing
a) Each 1 to 0
b) Each 0 to 1
c) Each 1 to 0 and each 0 to 1
d) None of the above
Ans. c


Click here to Watch video of these Questions

Computer Best MCQ Book in Just Rs.29/- [7000+ Question in English]
https://bharatskills.in/best-computer-mcq-book-for-competitive-exams/

Computer Best MCQ Book in Just Rs.25/- (2100+ Question in Hindi)
https://bharatskills.in/computer-mcq-book-in-hindi-pdf/

HEETSON

Telegram https://t.me/Heetson_Official
Binary Number 1’s Complement
1111 0000
0000 1111
1100 0011
0011 1100
1010 0101