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💻 Computer Science MCQs

Computer Science and Computer Knowledge MCQs on hardware, software, the internet and basic computing.

Computer questions cover the basics: parts of a computer, memory, software, the internet and common shortcuts.

Topics covered

HardwareSoftwareMemoryInternetShortcutsSecurity

Practice MCQs

1. CPU stands for:
  1. Central Processing Unit
  2. Computer Personal Unit
  3. Central Program Utility
  4. Control Processing Unit
Answer: A. Central Processing Unit
CPU is the Central Processing Unit, the brain of the computer.
2. Which is an input device?
  1. Monitor
  2. Printer
  3. Keyboard
  4. Speaker
Answer: C. Keyboard
A keyboard sends data into the computer.
3. How many bits are in one byte?
  1. 4
  2. 8
  3. 16
  4. 32
Answer: B. 8
One byte = 8 bits.
4. RAM is a type of:
  1. Permanent memory
  2. Volatile memory
  3. Optical disc
  4. Input device
Answer: B. Volatile memory
RAM loses its data when the power is off.
5. Which of these is an operating system?
  1. Windows
  2. Chrome
  3. Excel
  4. Google
Answer: A. Windows
Windows is an operating system.
6. HTML stands for:
  1. HyperText Markup Language
  2. High Text Machine Language
  3. HyperTool Making Language
  4. Home Text Markup Level
Answer: A. HyperText Markup Language
HTML is used to build web pages.
7. Which is an output device?
  1. Mouse
  2. Scanner
  3. Monitor
  4. Keyboard
Answer: C. Monitor
A monitor shows output from the computer.
8. Which shortcut copies selected text in Windows?
  1. Ctrl + V
  2. Ctrl + X
  3. Ctrl + Z
  4. Ctrl + C
Answer: D. Ctrl + C
Ctrl + C copies. Ctrl + V pastes.
9. The binary system uses which digits?
  1. 0 and 1
  2. 1 and 2
  3. 0 to 9
  4. 1 to 8
Answer: A. 0 and 1
Computers use only 0 and 1.
10. WWW stands for:
  1. World Wide Web
  2. World Web Window
  3. Wide World Wire
  4. Web World Wide
Answer: A. World Wide Web
WWW is the World Wide Web.
11. Which of these is NOT a programming language?
  1. Python
  2. Java
  3. HTTP
  4. C++
Answer: C. HTTP
HTTP is a protocol for web communication.
12. Which unit is larger than a megabyte (MB)?
  1. Kilobyte
  2. Byte
  3. Bit
  4. Gigabyte
Answer: D. Gigabyte
1 GB = 1024 MB.
13. Which of these is a web browser?
  1. Chrome
  2. Linux
  3. Python
  4. Excel
Answer: A. Chrome
Chrome is a web browser.
14. Software made to harm a computer is called:
  1. Freeware
  2. Malware
  3. Firmware
  4. Shareware
Answer: B. Malware
Malware means malicious software.
15. URL stands for:
  1. Uniform Resource Locator
  2. Universal Real Link
  3. Unique Resource Line
  4. United Resource Locator
Answer: A. Uniform Resource Locator
A URL is a web address.

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