21. What does HTML primarily define?
✅ C. The structure of web pages
a: Electrical voltage | b: Database passwords | c: The structure of web pages | d: Network cable length Read more
Computer Science MCQs – Page 2
22. Which is an example of an open-source operating system?
✅ C. Linux
a: Microsoft Excel | b: Adobe Photoshop | c: Linux | d: PowerPoint Read more
23. Which storage device has no moving mechanical parts?
✅ B. Solid-state drive (SSD)
a: Magnetic tape reel | b: Solid-state drive (SSD) | c: Floppy disk drive | d: Mechanical hard disk Read more
24. What does CPU stand for?
✅ C. Central Processing Unit
a: Central Program Upload | b: Computer Personal Utility | c: Central Processing Unit | d: Core Peripheral Unit Read more
25. Which device displays visual output from a computer?
✅ B. Monitor
a: Mouse | b: Monitor | c: Scanner | d: Microphone Read more
26. Which device is primarily used to enter text into a computer?
✅ B. Keyboard
a: Monitor | b: Keyboard | c: Speaker | d: Projector Read more
27. What is the main purpose of an operating system?
✅ C. To manage hardware and software resources
a: To increase monitor size | b: To create electricity | c: To manage hardware and software resources | d: To replace all applications Read more
28. Which file extension is commonly associated with a PDF document?
✅ D. .pdf
a: .exe | b: .mp3 | c: .xlsx | d: .pdf Read more
29. Which protocol is commonly used to load secure websites?
✅ B. HTTPS
a: Telnet only | b: HTTPS | c: SMTP | d: FTP only Read more
30. What does URL stand for?
✅ B. Uniform Resource Locator
a: Universal Record Link | b: Uniform Resource Locator | c: User Reference List | d: Unified Routing Language Read more
31. Which type of memory is volatile?
✅ A. RAM
a: RAM | b: Blu-ray disc | c: SSD when unpowered | d: ROM Read more
32. Which component performs arithmetic and logical operations in a CPU?
✅ C. Arithmetic Logic Unit (ALU)
a: Hard drive | b: Power supply | c: Arithmetic Logic Unit (ALU) | d: Control unit Read more
33. Which component stores data for quick access while programs run?
✅ A. RAM
a: RAM | b: Keyboard buffer only | c: Monitor panel | d: Printer toner Read more
34. What does DNS translate domain names into?
✅ C. IP addresses
a: Spreadsheet formulas | b: Audio frequencies | c: IP addresses | d: Image pixels Read more
35. What does HTML primarily define?
✅ C. The structure of web pages
a: Electrical voltage | b: Database passwords | c: The structure of web pages | d: Network cable length Read more
36. Which is an example of an open-source operating system?
✅ C. Linux
a: Microsoft Excel | b: Adobe Photoshop | c: Linux | d: PowerPoint Read more
37. Which storage device has no moving mechanical parts?
✅ B. Solid-state drive (SSD)
a: Magnetic tape reel | b: Solid-state drive (SSD) | c: Floppy disk drive | d: Mechanical hard disk Read more
38. What does CPU stand for?
✅ C. Central Processing Unit
a: Central Program Upload | b: Computer Personal Utility | c: Central Processing Unit | d: Core Peripheral Unit Read more
39. Which device displays visual output from a computer?
✅ B. Monitor
a: Mouse | b: Monitor | c: Scanner | d: Microphone Read more
40. Which device is primarily used to enter text into a computer?
✅ B. Keyboard
a: Monitor | b: Keyboard | c: Speaker | d: Projector Read more