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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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Q111. What is the unit of resolution of a screen?

  1. Pixel
  2. Hertz
  3. Byte
  4. Watt
Show answer and explanation

Correct answer: A. Pixel

Screen resolution is measured in pixels.

Q112. What does PDF stand for?

  1. Personal Document Format
  2. Portable Data File
  3. Portable Document Format
  4. Printable Document File
Show answer and explanation

Correct answer: C. Portable Document Format

PDF was created by Adobe.

Q113. What does ALU stand for?

  1. Advanced Logic Unit
  2. Arithmetic Language Unit
  3. Arithmetic Logic Unit
  4. Applied Logic Unit
Show answer and explanation

Correct answer: C. Arithmetic Logic Unit

The ALU performs arithmetic and logic operations.

Q114. What is the function of the Recycle Bin?

  1. Compresses files
  2. Temporarily stores deleted files
  3. Permanently deletes files
  4. Stores backups
Show answer and explanation

Correct answer: B. Temporarily stores deleted files

Deleted files can be restored from it.

Q115. Which type of printer uses toner?

  1. Inkjet
  2. Plotter
  3. Dot matrix
  4. Laser
Show answer and explanation

Correct answer: D. Laser

Laser printers use toner.

Q116. What is e-commerce?

  1. Sending email
  2. Buying and selling goods online
  3. Repairing computers
  4. Browsing the Internet
Show answer and explanation

Correct answer: B. Buying and selling goods online

E-commerce is online trade.

Q117. What is the result of 7 / 2 in integer division in C?

  1. 3.5
  2. 4
  3. 2
  4. 3
Show answer and explanation

Correct answer: D. 3

Integer division truncates.

Q118. Which of the following is a web browser?

  1. Oracle
  2. Chrome
  3. Windows
  4. Excel
Show answer and explanation

Correct answer: B. Chrome

Chrome is a browser.

Q119. What is a flowchart?

  1. A programming language
  2. A database
  3. A graphical representation of an algorithm
  4. A type of table
Show answer and explanation

Correct answer: C. A graphical representation of an algorithm

A flowchart uses symbols to show steps.

Q120. Which SQL command adds new rows?

  1. UPDATE
  2. SELECT
  3. INSERT
  4. ALTER
Show answer and explanation

Correct answer: C. INSERT

INSERT adds data.

Computer Science MCQs by exam

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