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Computer Basics

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Decimal representation of a number ( 1010.01 )2 is

  1. 9.25

  2. 10.25

  3. 9.50

  4. 10.50


Correct Option: B

Decimal representation of a numeral (A1.4)16 is

  1. 11.4

  2. 161.4

  3. 101.25

  4. 161.25


Correct Option: D

Hexadecimal numeral corresponding to the decimal number 0.125 is

  1. (0.2)16

  2. (0.1)16

  3. (0.02)16

  4. None of these


Correct Option: A

Decimal form of a number (100)2 is

  1. 8

  2. 100

  3. 4

  4. None of these


Correct Option: C

The sum of the numbers (11011)2 & (101.2)2 is

  1. (11112.1)2

  2. 11112.1

  3. (100.1)2

  4. None of these


Correct Option: C

A computer can execute

  1. a flow chart

  2. a program

  3. an algorithm

  4. None of these


Correct Option: B

A basic control structure always has

  1. one entry two exist points

  2. two entry & one exist points

  3. any number of entry & exist points

  4. one entry & one exists points


Correct Option: D

The FOR-DO constructs executes the loop at least

  1. once

  2. twice

  3. thrice

  4. None of these


Correct Option: A

RAM stands for

  1. random access memory

  2. read access memory

  3. random and memory

  4. None of these


Correct Option: A

The heart & the serve center of a computer is its

  1. input unit

  2. CPU

  3. output unit

  4. memory


Correct Option: B

ROM stands for

  1. read or memory

  2. read only memory

  3. random only memory

  4. None of these


Correct Option: B

What is the meaning of hard copy?

  1. raw material

  2. superior material

  3. printed computer output

  4. None of these


Correct Option: C

The number of significant digit in 0.003050 is

  1. 7

  2. 6

  3. 4

  4. None of these


Correct Option: C

LED stands for

  1. light emitting diode

  2. light emitting door

  3. light emitting driver

  4. None of these


Correct Option: A

The number 3.68451 when rounded off to three decimal place becomes

  1. 3.68

  2. 3.684

  3. 3.685

  4. None of these


Correct Option: C

The number of significant digit in 0.4 is

  1. 5

  2. 4

  3. 1

  4. None of these


Correct Option: C

When the number 2.089 is rounded off to three significant digits, the absolute error is

  1. 0.01

    • 0.01
  2. 0.001

  3. 1 - .001


Correct Option: D

When a number is rounded off to n decimal place, the magnitude of relative error does not exceeds

  1. 10 - n

  2. 10 - n + 1

  3. 0.5 ´ 10 - n + 1

  4. None of these


Correct Option: C

When a number is approximated to n decimal place by chopping off the extra digits, the absolute value of the relative error does not exceed

  1. 10 - n

  2. 10 - n + 1

  3. 0.5 ´ 10 - n + 1

  4. Nothing can be said


Correct Option: B

The number 0.0008857 when rounded off to three significant yields

  1. 0.001

  2. 0.000886

  3. 0.000885

  4. None of these


Correct Option: B

The number of significant digit in 20340 is

  1. 4

  2. 5

  3. 3

  4. None of these


Correct Option: A

Binary representation of the numeral ( in decimal form ) 7 is

  1. (101)2

  2. (111)2

  3. (1001)2

  4. None of these


Correct Option: B

The WHILE-DO constructs executes the loop at least

  1. once

  2. twice

  3. thrice

  4. None of these


Correct Option: D

An algorithm must have at least

  1. one output

  2. one input

  3. one assignment

  4. None of these


Correct Option: A

The number of significant digit in 20.035 is

  1. 3

  2. 2

  3. 1

  4. None of these


Correct Option: B
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