ECAT Pre Computer Science MCQ Test For Computer Chapter 4 With Answer

MCQ's Test For ECAT Computer Science Chapter 4 Computer Arithmetic & Number System

Try The MCQ's Test For ECAT Computer Science Chapter 4 Computer Arithmetic & Number System

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ECAT Computer Science Chapter 4 Computer Arithmetic & Number System

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Question # 1

What is the octal equivalent of the binary system :10111101.?

Question # 2

The number ABC in Hexadecimal system is equivalent to which number in decimal system.

Question # 3

A letter, number, or a special character is represented by a.

Question # 4

1258(octal) in decimal equivalent is equal to.

Question # 5

The main advantage of hexadecimal number is the case of conversion from hexadecimal to.

Question # 6

The reason why computers have been designed to use binary numbers is.

Question # 7

Number 37510is equivalent in binary system to.

Question # 8

Data is represented on a computer by means of a two-state on/off system called

Question # 9

Base 8 is often used in computing because.

Question # 10

9710(decimal) in octal number system is equivalent to.

Question # 11

Binary number 10101101 is equivalent in decimal form to.

Question # 12

1268+ 4258= __________

Question # 13

The number A9D in Hexadecimal system is equivalent to which number in decimal system.

Question # 14

Four-digit binary number 1011 is represented in the decimal system by.

Question # 15

The number A9D in Hexadecimal system is equivalent to which number in binary system.

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ECAT Computer Sciences Chapter 4 Important MCQ's

Sr.# Question Answer
1 1268+ 4258= __________
A. 1111010112
B. 1011010012
C. 1011010112
D. 1011000112
2 The number A9D in Hexadecimal system is equivalent to which number in decimal system.
A. 2727
B. 2648
C. 3717
D. 2717
3 The reason why computers have been designed to use binary numbers is.
A. computer circuits have to handle 2 binary digits rather than 10
B. electronic components, by their very nature, operate in a binary mode
C. everything that can be done with a base of 10 can also be done in binary
D. all of the above
4 Base 8 is often used in computing because.
A. there are 8 bit in a byte
B. calculations become easier by using base 8
C. electronic circuits can be made econmically
D. it can represent long strings of binary 1's an 0's in a more compact form
5 The number 10000 would appear just immediately after.
A. FFFF (hex)
B. 1111 (binary)
C. 7777 (octal)
D. all of the above
6 The binary number 10011101 is equal to the hexadecimal number.
A. 9E
B. 9F
C. 9D
D. FF
7 The hexadecimal number system is widely used in analyzing and programming in.
A. analog computers
B. binary computers
C. decimal computers
D. micro computers
8 The main advantage of hexadecimal number is the case of conversion from hexadecimal to.
A. ASCII code
B. binary
C. octal
D. decimal
9 The number ABC in Hexadecimal system is equivalent to which number in decimal system.
A. A x 100 + B x 10 + C x 1
B. 10 x 100 + 11 x 10 + 12
C. 10 x 16 + 11 x 16 + 12
D. 10 x 256 + 11 x 16 + 12
10 What is the octal equivalent of the binary system :10111101.?
A. 6758
B. 2758
C. 5728
D. 5738

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