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Computer Science MCQs with Answers

Computer knowledge is tested in jobs ranging from clerical posts to IT positions. Practice MCQs on computer fundamentals, hardware, software, MS Office, networking, internet, databases and programming concepts, and see your score as soon as you finish.

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Q51. Which shortcut key opens the Find dialog?

  1. Ctrl + F
  2. Ctrl + R
  3. Ctrl + H
  4. Ctrl + G
Show answer and explanation

Correct answer: A. Ctrl + F

Ctrl+F finds text.

Q52. Which command changes directory?

  1. cd
  2. go
  3. move
  4. chdir only
Show answer and explanation

Correct answer: A. cd

cd changes directory.

Q53. What does CPU stand for?

  1. Central Program Unit
  2. Computer Processing Unit
  3. Central Processing Unit
  4. Central Peripheral Unit
Show answer and explanation

Correct answer: C. Central Processing Unit

The CPU is the brain of the computer.

Q54. What does IP stand for in IP address?

  1. Internet Protocol
  2. Internal Protocol
  3. Information Protocol
  4. Intranet Protocol
Show answer and explanation

Correct answer: A. Internet Protocol

IP identifies devices on a network.

Q55. Which generation of computers used vacuum tubes?

  1. Fourth generation
  2. Third generation
  3. First generation
  4. Second generation
Show answer and explanation

Correct answer: C. First generation

First generation computers used vacuum tubes.

Q56. What does WWW stand for?

  1. Web World Wide
  2. Wide World Web
  3. World Wide Web
  4. World Web Wide
Show answer and explanation

Correct answer: C. World Wide Web

WWW is the Web.

Q57. Which function key edits a cell in Excel?

  1. F7
  2. F1
  3. F5
  4. F2
Show answer and explanation

Correct answer: D. F2

F2 enters edit mode.

Q58. What is a logical error?

  1. Program crashes at start
  2. Program runs but gives wrong output
  3. Program does not compile
  4. Missing semicolon
Show answer and explanation

Correct answer: B. Program runs but gives wrong output

Logical errors produce incorrect results.

Q59. Which is the main circuit board of the computer?

  1. Graphics card
  2. Power supply
  3. Motherboard
  4. Soundcard
Show answer and explanation

Correct answer: C. Motherboard

It is the main PCB.

Q60. In a flowchart, which shape represents start/end?

  1. Diamond
  2. Circle
  3. Rectangle
  4. Oval (Terminator)
Show answer and explanation

Correct answer: D. Oval (Terminator)

Terminators mark start and stop.

Computer Science MCQs by exam

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