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