Test Preparation

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.

Take a timed Computer Science quiz: Free account required to save your score.

Q91. What does 'dpi' measure?

  1. Data per inch
  2. Dots per inch
  3. Digits per inch
  4. Disks per inch
Show answer and explanation

Correct answer: B. Dots per inch

DPI measures printing or scan resolution.

Q92. What is a compiler?

  1. Designs web pages
  2. Stores data
  3. Executes line by line
  4. Translates the whole program into machine code at once
Show answer and explanation

Correct answer: D. Translates the whole program into machine code at once

A compiler translates source code to machine code.

Q93. Which Excel function counts numeric cells?

  1. NUMBER
  2. COUNT
  3. TOTAL
  4. COUNTA
Show answer and explanation

Correct answer: B. COUNT

COUNT counts numbers; COUNTA counts non-empty cells.

Q94. Who is known as the father of the Internet?

  1. Tim Berners-Lee
  2. Vint Cerf
  3. Charles Babbage
  4. Dennis Ritchie
Show answer and explanation

Correct answer: B. Vint Cerf

Vint Cerf and Bob Kahn designed TCP/IP.

Q95. What is a field in a database?

  1. A key
  2. A column in a table
  3. A table
  4. A row
Show answer and explanation

Correct answer: B. A column in a table

A field is a column.

Q96. What does GPU stand for?

  1. Graphical Program Unit
  2. Global Processing Unit
  3. Graphics Processing Unit
  4. General Processing Unit
Show answer and explanation

Correct answer: C. Graphics Processing Unit

A GPU handles graphics and parallel computation.

Q97. In MS Excel, which symbol must a formula begin with?

  1. $
  2. @
  3. #
  4. =
Show answer and explanation

Correct answer: D. =

Formulas begin with =.

Q98. What does a firewall do?

  1. Speeds up Internet
  2. Compresses files
  3. Prints documents
  4. Filters network traffic
Show answer and explanation

Correct answer: D. Filters network traffic

A firewall blocks unauthorised traffic.

Q99. What is an algorithm?

  1. A programming language
  2. A web page
  3. A step-by-step procedure to solve a problem
  4. A type of computer
Show answer and explanation

Correct answer: C. A step-by-step procedure to solve a problem

An algorithm is a finite sequence of instructions.

Q100. Which shortcut key underlines text?

  1. Ctrl + I
  2. Ctrl + U
  3. Ctrl + B
  4. Ctrl + N
Show answer and explanation

Correct answer: B. Ctrl + U

Ctrl+U underlines.

Computer Science MCQs by exam

Other subjects

Looking for a job? Apply while you prepare: browse the latest government and private jobs on PK JOBs Hub.