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Looking to strengthen your foundation in computer basics? This collection of Computer Basic Sample MCQ Questions and Answers is designed for beginners, students, and anyone preparing for exams. Each question comes with clear answers and explanations, helping you learn faster and test your understanding of essential computer concepts like hardware, software, storage, input/output devices, and networks. Practice these MCQs to boost your confidence and sharpen your computer knowledge.
Computer Basics MCQ Quiz (50 Questions)
Select the correct option and click "Check Answer" to see the solution.
1. What is a computer primarily used for?
Explain:- Computers are designed to perform calculations and process information efficiently.
2. Which of the following is an example of hardware?
Explain:- Hardware refers to the physical components of a computer, like the CPU.
3. Which of these is NOT a type of computer?
Explain:- Pencil is not a type of computer.
4. What does RAM stand for in a computer?
Explain:- RAM is temporary memory used to store data that the CPU is currently working on.
5. What is the main function of a motherboard in a computer?
Explain:- Motherboard is the main circuit board that connects CPU, RAM, storage, and peripherals.
6. What does a CPU do in a computer?
Explain:- The CPU is the brain of the computer, performing calculations and executing instructions.
7. Which storage device is used for permanent data storage?
Explain:- Hard drives and SSDs store data permanently even when the computer is turned off.
8. Which of the following is an input device?
Explain:- Input devices allow the user to send data into the computer. Keyboard and mouse are examples.
9. Which of the following is an output device?
Explain:- Output devices display data from the computer to the user. Monitor and printer are examples.
10. Which of the following is an example of a mobile device?
Explain:- Mobile devices are portable computing devices like smartphones and tablets.
11. What does RAM stand for in a computer?
Explain:- RAM temporarily stores data and instructions that the CPU needs while a computer is running.
12. Which device provides long-term storage for programs and files?
Explain:- Hard drives and SSDs provide permanent storage for files, programs, and the operating system.
13. Which of the following is software?
Explain:- Software refers to programs and applications that run on the computer, like the OS or MS Word.
14. Which of the following is an example of system software?
Explain:- System software manages hardware and provides a platform for applications. Windows is an example.
15. Which of these is NOT a type of computer?
Explain:- Printer is a peripheral device, not a computer type.
16. What is the main function of a CPU?
Explain:- The CPU (Central Processing Unit) processes instructions from programs and performs calculations.
17. Which of the following is volatile memory?
Explain:- Volatile memory loses its data when the computer is turned off; RAM is an example.
18. What is the primary purpose of a motherboard?
Explain:- The motherboard is the main circuit board that connects all components of the computer.
19. Which of the following is an input device?
Explain:- Input devices like keyboards and mice allow users to provide data to the computer.
20. Which of these is an output device?
Explain:- Output devices display or provide processed data; monitors display visual output.
21. Which type of memory is used to store firmware?
Explain:- ROM (Read-Only Memory) stores firmware that does not change frequently.
22. Which of the following is a type of expansion card?
Explain:- Expansion cards are hardware components inserted into slots on the motherboard to add functionality; sound cards are an example.
23. What does USB stand for?
Explain:- USB is a standard interface used to connect peripherals to a computer.
24. Which of these is NOT an operating system?
Explain:- Microsoft Word is an application, not an operating system.
25. Which part of the computer stores data permanently?
Explain:- Hard drives store data permanently even when the computer is turned off.
26. What is the main function of a GPU?
Explain:- A GPU (Graphics Processing Unit) handles rendering images, videos, and 3D graphics.
27. Which device is used to read optical discs?
Explain:- Optical drives read data from CDs, DVDs, and Blu-ray discs using lasers.
28. Which of the following is considered portable memory?
Explain:- USB flash drives are portable and can be used to transfer data between computers.
29. Which device is primarily used for pointing and clicking on a computer?
Explain:- A mouse is used to point, click, and select objects on the screen.
30. Which memory is volatile in a computer?
Explain:- RAM is volatile memory and loses its contents when the computer is turned off.
31. What is the primary purpose of the CPU?
Explain:- The CPU executes instructions and processes data in a computer.
32. Which of the following is a type of mobile device?
Explain:- Mobile devices include smartphones, tablets, and other handheld computing devices.
33. Which of the following is a type of software?
Explain:- Software is a set of programs; Windows is an operating system software.
34. What is the main function of RAM in a computer?
Explain:- RAM temporarily stores data that the CPU is currently using.
35. What type of device is a printer?
Explain:- Printers are output devices that produce a physical copy of digital documents.
36. Which of the following is a non-volatile storage device?
Explain:- ROM retains data even when the computer is turned off, making it non-volatile.
37. Which of the following is an example of an input device?
Explain:- Keyboard is an input device used to enter data into a computer.
38. Which component connects all parts of a computer and allows communication between them?
Explain:- The motherboard is the main circuit board that connects CPU, memory, storage, and peripherals.
39. Which of the following is an example of application software?
Explain:- Microsoft Word is an application software used for creating documents.
40. Which part of the computer supplies power to all components?
Explain:- PSU converts electrical power from outlet into usable power for computer components.
41. Which type of computer is designed for personal use at home or office?
Explain:- PCs are designed for individual use in homes and offices.
42. Which device is used to display information visually on a computer?
Explain:- Monitors are output devices used to visually display computer data.
43. Which computer component performs calculations and logical operations?
Explain:- The CPU executes instructions, performs calculations, and makes logical decisions.
44. Which type of storage device is used in smartphones?
Explain:- Smartphones use flash memory for permanent, non-volatile storage.
45. Which software manages computer hardware and provides services for applications?
Explain:- The OS manages hardware resources and provides a platform for applications.
46. Which of these is a type of expansion card?
Explain:- Expansion cards like graphics cards are installed on the motherboard to add functionality.
47. Which of the following is a laptop feature that distinguishes it from a desktop?
Explain:- Laptops are portable computers with built-in keyboard, screen, and battery.
48. Which of the following is used to transfer data between computers over a short distance?
Explain:- LAN (Local Area Network) connects computers within a limited area like an office or home.
49. Which device allows a computer to connect to the internet wirelessly?
Explain:- Wireless adapters or routers enable computers to connect to Wi-Fi networks.
50. Which of the following is used to store a large amount of data permanently?
Explain:- HDDs store large amounts of data permanently for long-term use.
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