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.

Q171. What does SSD stand for?

  1. Solid Storage Disk
  2. Super Speed Drive
  3. System Storage Device
  4. Solid State Drive
Show answer and explanation

Correct answer: D. Solid State Drive

SSDs use flash memory with no moving parts.

Q172. Which key toggles uppercase letters?

  1. Tab
  2. Num Lock
  3. Scroll Lock
  4. Caps Lock
Show answer and explanation

Correct answer: D. Caps Lock

Caps Lock toggles capitals.

Q173. What does URL stand for?

  1. Universal Resource Link
  2. Uniform Resource Locator
  3. Uniform Reference Locator
  4. Universal Resource Locator
Show answer and explanation

Correct answer: B. Uniform Resource Locator

A URL is a web address.

Q174. Which command is used to remove files in Linux?

  1. del
  2. remove
  3. erase
  4. rm
Show answer and explanation

Correct answer: D. rm

rm deletes files.

Q175. Which SQL command removes rows?

  1. DROP
  2. REMOVE
  3. CLEAR
  4. DELETE
Show answer and explanation

Correct answer: D. DELETE

DELETE removes rows from a table.

Q176. What does 'cut, copy, paste' commands manipulate?

  1. Selected data
  2. Only images
  3. Only files
  4. Only folders
Show answer and explanation

Correct answer: A. Selected data

They work on selected content.

Q177. What is the time complexity of linear search?

  1. O(log n)
  2. O(1)
  3. O(n)
  4. O(n log n)
Show answer and explanation

Correct answer: C. O(n)

Linear search checks each element.

Q178. Who developed the Linux kernel?

  1. Ken Thompson
  2. Linus Torvalds
  3. Dennis Ritchie
  4. Bill Gates
Show answer and explanation

Correct answer: B. Linus Torvalds

Linus Torvalds released Linux in 1991.

Q179. In an email, what does CC stand for?

  1. Carbon Copy
  2. Common Copy
  3. Courtesy Content
  4. Computer Copy
Show answer and explanation

Correct answer: A. Carbon Copy

CC sends a copy to others.

Q180. Which key starts a slideshow from the beginning in PowerPoint?

  1. F7
  2. F1
  3. F12
  4. F5
Show answer and explanation

Correct answer: D. F5

F5 starts from the beginning.

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.