821. 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
Computer Science MCQs – Page 42
822. Which device displays visual output from a computer?
✅ B. Monitor
a: Mouse | b: Monitor | c: Scanner | d: Microphone Read more
823. Which device is primarily used to enter text into a computer?
✅ B. Keyboard
a: Monitor | b: Keyboard | c: Speaker | d: Projector Read more
824. 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
825. Which file extension is commonly associated with a PDF document?
✅ D. .pdf
a: .exe | b: .mp3 | c: .xlsx | d: .pdf Read more
826. Which protocol is commonly used to load secure websites?
✅ B. HTTPS
a: Telnet only | b: HTTPS | c: SMTP | d: FTP only Read more
827. 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
828. Which type of memory is volatile?
✅ A. RAM
a: RAM | b: Blu-ray disc | c: SSD when unpowered | d: ROM Read more
829. 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
830. What is the binary representation of decimal number 29?
✅ C. 11101
a: 1d | b: 11110 | c: 11101 | d: 11100 Read more
831. What is the binary representation of decimal number 28?
✅ C. 11100
a: 11011 | b: 11101 | c: 11100 | d: 1c Read more
832. What is the binary representation of decimal number 27?
✅ A. 11011
a: 11011 | b: 11100 | c: 11010 | d: 1b Read more
833. What is the binary representation of decimal number 26?
✅ B. 11010
a: 1a | b: 11010 | c: 11001 | d: 11011 Read more
834. What is the binary representation of decimal number 25?
✅ B. 11001
a: 11010 | b: 11001 | c: 11000 | d: 19 Read more
835. What is the binary representation of decimal number 24?
✅ D. 11000
a: 10111 | b: 18 | c: 11001 | d: 11000 Read more
836. What is the binary representation of decimal number 23?
✅ D. 10111
a: 17 | b: 11000 | c: 10110 | d: 10111 Read more
837. What is the binary representation of decimal number 22?
✅ B. 10110
a: 10111 | b: 10110 | c: 16 | d: 10101 Read more
838. What is the binary representation of decimal number 21?
✅ C. 10101
a: 10110 | b: 10100 | c: 10101 | d: 15 Read more
839. What is the binary representation of decimal number 20?
✅ A. 10100
a: 10100 | b: 14 | c: 10011 | d: 10101 Read more
840. What is the binary representation of decimal number 19?
✅ C. 10011
a: 13 | b: 10100 | c: 10011 | d: 10010 Read more