Question # 1

AB₁₆+ CD₁₆= ________

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101111010₂

101111000₂

101111110₂

101101000₂

125₈(octal) in decimal equivalent is equal to.

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83₁₀

84₁₀

85₁₀

86₁₀

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

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A x 100 + B x 10 + C x 1

10 x 100 + 11 x 10 + 12

10 x 16 + 11 x 16 + 12

10 x 256 + 11 x 16 + 12

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

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bit

kilobyte

byte

megabyte

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

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675₈

275₈

572₈

573₈

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

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80

82

86

84

Data items are generally classified into which type of codes

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Numeric

Alphanumeric

Character

All of the above

The digits used for hexadecimal number system are.

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A through Z

1 through 16

0 through 15

0 through 9 and A through F

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

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8 bit code

4 bit code

5 bit code

7 bit code

Base 8 is often used in computing because.

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there are 8 bit in a byte

calculations become easier by using base 8

electronic circuits can be made econmically

it can represent long strings of binary 1's an 0's in a more compact form

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

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the octal system

the binary system

a word

ROM

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

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7

9

11

13

The binary number 101000101011 is equal to the hexadecimal number

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A2D

C2D

A2B

B2C

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

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136₈

140₈

139₈

141₈

Binary number 10101101 is equivalent in decimal form to.

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170

171

173

174

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ECAT Computer Science Chapter 4 Computer Arithmetic & Number System Online Test MCQs With Answers

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