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

Alphanumeric characters are expressed in terms of binary codes. In ASCII (American standard Code for Information Interchange) each character is represented as a

Question # 2

The number 10000 would appear just immediately after.

Question # 3

Binary number 10101101 is equivalent in decimal form to.

Question # 4

Data items are generally classified into which type of codes

Question # 5

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

Question # 6

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

Question # 7

1268+ 4258= __________

Question # 8

Base 8 is often used in computing because.

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

1258(octal) in decimal equivalent is equal to.

Question # 13

The hexadecimal number system is widely used in analyzing and programming in.

Question # 14

Octal number system uses the digit 0 to 7. The equivalent of Octal 126 in decimal system is.

Question # 15

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

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ECAT Computer Sciences Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 Number 37510is equivalent in binary system to.
A. 101110101
B. 100110101
C. 101110111
D. 101110011
3 Alphanumeric characters are expressed in terms of binary codes. In ASCII (American standard Code for Information Interchange) each character is represented as a
A. 8 bit code
B. 4 bit code
C. 5 bit code
D. 7 bit code
4 Four-digit binary number 1011 is represented in the decimal system by.
A. 7
B. 9
C. 11
D. 13
5 The number A9D in Hexadecimal system is equivalent to which number in decimal system.
A. 2727
B. 2648
C. 3717
D. 2717
6 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
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 Octal number system uses the digit 0 to 7. The equivalent of Octal 126 in decimal system is.
A. 80
B. 82
C. 86
D. 84
9 The binary number 10011101 is equal to the hexadecimal number.
A. 9E
B. 9F
C. 9D
D. FF
10 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

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