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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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Q11. Which protocol is used to receive email from a server (download)?

  1. FTP
  2. POP3
  3. SMTP
  4. HTTP
Show answer and explanation

Correct answer: B. POP3

POP3 retrieves email.

Q12. Which extension is used for an executable file in Windows?

  1. .docx
  2. .exe
  3. .png
  4. .txt
Show answer and explanation

Correct answer: B. .exe

.exe files are executables.

Q13. Which is not an operating system?

  1. Linux
  2. Oracle
  3. macOS
  4. Windows
Show answer and explanation

Correct answer: B. Oracle

Oracle is a database product.

Q14. Which memory is volatile?

  1. ROM
  2. Hard disk
  3. Flash drive
  4. RAM
Show answer and explanation

Correct answer: D. RAM

RAM loses its data when power is off.

Q15. What is the kernel?

  1. A text editor
  2. A web browser
  3. Core of the operating system
  4. A game
Show answer and explanation

Correct answer: C. Core of the operating system

The kernel manages hardware and processes.

Q16. What does LAN stand for?

  1. Linked Area Network
  2. Local Access Network
  3. Local Area Network
  4. Large Area Network
Show answer and explanation

Correct answer: C. Local Area Network

A LAN covers a small area.

Q17. What is a supercomputer used for?

  1. Reading email
  2. Complex scientific calculations
  3. Playing music
  4. Basic typing
Show answer and explanation

Correct answer: B. Complex scientific calculations

Supercomputers do very high-speed computation.

Q18. Which generation of computers used transistors?

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

Correct answer: B. Second generation

Second generation computers used transistors.

Q19. Which key moves the cursor to the end of the line?

  1. End
  2. Tab
  3. Delete
  4. Home
Show answer and explanation

Correct answer: A. End

End goes to line end.

Q20. Which Excel function looks up a value in a column table?

  1. SEARCH
  2. VLOOKUP
  3. HLOOKUP
  4. MATCH
Show answer and explanation

Correct answer: B. VLOOKUP

VLOOKUP searches the first column.

Computer Science MCQs by exam

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