Basic Components of a Computer System MCQs

By: Prof. Dr. Fazal Rehman | Last updated: June 19, 2025

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1. : Which component is considered the brain of the computer?





2. : What does RAM stand for in computer systems?





3. : Which component is responsible for storing data permanently?





4. : What is the primary function of the motherboard in a computer system?





5. : Which component is responsible for rendering images and videos?





6. : What is the role of the power supply unit (PSU) in a computer system?





7. : Which component provides the interface for connecting external devices to a computer?





8. : What type of memory is used for storing firmware and system settings?





9. : Which component is used for temporary storage of data that the CPU is currently processing?





10. : What is the purpose of the Central Processing Unit (CPU)?





11. : Which component connects the CPU to other hardware components?





12. : What type of storage is typically used for long-term data storage and is non-volatile?





13. : Which of the following is an input device?





14. : What is the primary function of a computer’s heat sink?





15. : Which component provides the physical interface for connecting expansion cards?





16. : Which component is responsible for managing and directing data between the CPU, RAM, and other components?





17. : What is the role of the cache memory in a computer system?





18. : Which of the following is considered a secondary storage device?





19. : What is the purpose of the computer’s bus system?





20. : Which component is primarily responsible for the boot process of a computer?





21. : Which part of the computer system is essential for network connectivity?





22. : What does BIOS stand for in a computer system?





23. : Which component is used to provide visual output from the computer?





24. : What is the primary purpose of a computer’s RAM?





25. : Which component is often referred to as the “heart” of the computer system?





26. : What is the function of the computer’s power supply unit (PSU)?





27. : Which type of storage device uses flash memory and has no moving parts?





28. : Which component is primarily responsible for sound output in a computer system?





29. : What is the function of the computer’s heat sink?





30. : Which component is responsible for handling data transfers between the CPU and RAM?





31. : Which of the following is a common external storage device?





32. : Which computer component is used to display graphical output?





33. : What type of memory is known for its high-speed access and is used to speed up processing?





34. : Which component connects the CPU, RAM, and other hardware components together?





35. : Which device is used to input data into a computer system?





36. : Which component is crucial for maintaining the computer’s clock speed?





37. : What does a computer’s ROM typically store?





38. : Which component is responsible for cooling the CPU and preventing overheating?





39. : What type of memory is volatile and loses its data when the power is off?





40. : Which part of the computer is used for network communication and internet access?





41. : What is the main function of the GPU in a computer system?





42. : Which of the following components is an example of secondary storage?





43. : Which component is responsible for processing and executing instructions?





44. : What type of storage device is typically used for optical media?





45. : Which component controls the computer’s input and output operations?





46. : Which of the following is not a primary component of a computer system?





47. : What is the function of a computer’s power supply unit (PSU)?





48. : Which component helps in increasing the speed of data access and retrieval?





49. : What type of memory is used to store system firmware and is non-volatile?





50. : Which component is primarily used to manage and synchronize the computer’s internal operations?





 

Read More Computer Architecture MCQs

  1. SET 1: Computer Architecture MCQs
  2. SET 2: Computer Architecture MCQs
  3. SET 3: Computer Architecture MCQs
  4. SET 4: Computer Architecture MCQs
  5. SET 5: Computer Architecture MCQs
  6. SET 6: Computer Architecture MCQs
  7. SET 7: Computer Architecture MCQs
  8. SET 8: Computer Architecture MCQs
  9. SET 9: Computer Architecture MCQs
 

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