1. Which component is called the "brain" of the computer?
- a) CPU
- b) RAM
- c) Hard Disk
- d) GPU
Answer: A - The CPU (Central Processing Unit) executes instructions and processes data.
2. What is the function of RAM in a computer?
- a) Temporary storage for active programs
- b) Permanent storage for files
- c) Processing graphics
- d) Connecting to the internet
Answer: A - RAM (Random Access Memory) stores data temporarily while the computer is running.
3. Which of these is a secondary storage device?
- a) SSD
- b) CPU
- c) RAM
- d) Cache
Answer: A - SSDs (Solid State Drives) are non-volatile secondary storage devices.
4. What does BIOS stand for?
- a) Basic Input/Output System
- b) Binary Input/Output Standard
- c) Boot Initialization Operating System
- d) Basic Integrated Operating Software
Answer: A - BIOS initializes hardware during the boot process.
5. Which port is commonly used to connect a printer?
- a) USB
- b) HDMI
- c) VGA
- d) Ethernet
Answer: A - USB (Universal Serial Bus) is widely used for printers and peripherals.
6. What is the purpose of an operating system?
- a) Manages hardware and software resources
- b) Increases internet speed
- c) Designs graphics
- d) Stores data permanently
Answer: A - The OS acts as an intermediary between users and hardware.
7. Which of these is a volatile memory?
- a) RAM
- b) ROM
- c) HDD
- d) SSD
Answer: A - RAM loses data when power is turned off.
8. What is the smallest unit of data in computing?
- a) Bit
- b) Byte
- c) Nibble
- d) Kilobyte
Answer: A - A bit (binary digit) is 0 or 1.
9. Which device converts AC to DC in a computer?
- a) Power Supply Unit (PSU)
- b) Motherboard
- c) CPU
- d) SMPS
Answer: A - The PSU converts alternating current (AC) to direct current (DC).
10. What is the main function of a GPU?
- a) Rendering graphics
- b) Storing data
- c) Running the OS
- d) Managing internet connections
Answer: A - GPU (Graphics Processing Unit) handles visual computations.
11. Which software is used to create spreadsheets?
- a) Microsoft Excel
- b) Adobe Photoshop
- c) AutoCAD
- d) Notepad
Answer: A - Excel is a spreadsheet application.
12. What is firmware?
- a) Software embedded in hardware
- b) A type of RAM
- c) Cloud storage
- d) An operating system
Answer: A - Firmware is permanent software programmed into hardware (e.g., BIOS).
13. Which of these is an input device?
- a) Keyboard
- b) Monitor
- c) Printer
- d) Speaker
Answer: A - A keyboard sends data to the computer.
14. What does SSD stand for?
- a) Solid State Drive
- b) Super Speed Disk
- c) Secondary Storage Device
- d) System Software Drive
Answer: A - SSDs use flash memory for faster data access than HDDs.
15. Which component connects all hardware devices?
- a) Motherboard
- b) CPU
- c) Power Supply
- d) GPU
Answer: A - The motherboard houses the CPU, RAM, and other components.
16. What is the function of an ALU?
- a) Performs arithmetic and logic operations
- b) Stores data
- c) Manages power supply
- d) Displays output
Answer: A - The ALU (Arithmetic Logic Unit) is part of the CPU.
17. Which of these is a system software?
- a) Windows OS
- b) Microsoft Word
- c) Google Chrome
- d) Photoshop
Answer: A - Operating systems are system software.
18. What is the purpose of a cache memory?
- a) Speeds up CPU operations
- b) Stores permanent data
- c) Connects to the internet
- d) Prints documents
Answer: A - Cache provides fast access to frequently used data.
19. Which of these is NOT an output device?
- a) Mouse
- b) Monitor
- c) Printer
- d) Speaker
Answer: A - A mouse is an input device.
20. What does USB stand for?
- a) Universal Serial Bus
- b) Unified System Bus
- c) User Storage Buffer
- d) Ultra Speed Bandwidth
Answer: A - USB is a standard for connecting peripherals.