1. The main function of the memory unit is to:
(A) Process data
(B) Store data and instructions temporarily or permanently
(C) Display output
(D) Control input devices
2. Which of the following is volatile memory?
(A) Hard Disk
(B) ROM
(C) RAM
(D) Flash Drive
3. Which memory is non-volatile?
(A) ROM
(B) Cache
(C) RAM
(D) Registers
4. RAM stands for:
(A) Read-Only Memory
(B) Read Access Memory
(C) Rapid Access Memory
(D) Random Access Memory
5. ROM stands for:
(A) Read-Only Memory
(B) Random Output Memory
(C) Rapid Output Memory
(D) Read Access Memory
6. Which of the following is temporary storage?
(A) RAM
(B) ROM
(C) Hard Disk
(D) Flash Drive
7. Cache memory is used to:
(A) Increase CPU processing speed
(B) Store data permanently
(C) Store input device data
(D) Display output
8. Which memory is faster?
(A) RAM
(B) Hard Disk
(C) Cache
(D) CD-ROM
9. Registers are located:
(A) Inside CPU
(B) On Motherboard
(C) On Hard Disk
(D) In Monitor
10. Which of the following is primary memory?
(A) Hard Disk
(B) CD-ROM
(C) RAM
(D) USB Drive
11. Which of the following is secondary memory?
(A) RAM
(B) ROM
(C) Registers
(D) Hard Disk
12. EPROM can be erased using:
(A) Heat
(B) Magnetic field
(C) UV light
(D) Electricity
13. PROM can be programmed:
(A) Multiple times
(B) Never
(C) Only once
(D) Using magnetic field
14. Flash memory is a type of:
(A) Volatile memory
(B) Non-volatile memory
(C) Cache memory
(D) Register
15. Which memory stores BIOS of a computer?
(A) RAM
(B) Hard Disk
(C) Cache
(D) ROM
16. The fastest memory available to CPU is:
(A) RAM
(B) Registers
(C) Cache
(D) Hard Disk
17. SDRAM stands for:
(A) Synchronous Data RAM
(B) Static Dynamic RAM
(C) Serial Data RAM
(D) Synchronous Dynamic RAM
18. DRAM needs to be refreshed:
(A) Never
(B) Occasionally
(C) Continuously
(D) Only during shutdown
19. SRAM stands for:
(A) Secondary RAM
(B) Synchronous RAM
(C) Static Random Access Memory
(D) Standard RAM
20. Volatile memory loses data when:
(A) System is running
(B) Power is off
(C) Data is stored
(D) CPU is idle
21. Non-volatile memory retains data:
(A) Only during power on
(B) Only in cache
(C) For a few seconds
(D) Permanently, even without power
22. Virtual memory is implemented using:
(A) Registers
(B) Cache
(C) Hard Disk
(D) ROM
23. Which memory is closest to CPU for fast access?
(A) ROM
(B) RAM
(C) Hard Disk
(D) Cache
24. Memory hierarchy is designed to:
(A) Reduce CPU speed
(B) Store input data
(C) Reduce cost and increase performance
(D) Display output
25. Which of the following is fastest secondary storage?
(A) Hard Disk
(B) Magnetic Tape
(C) CD-ROM
(D) SSD
26. Which of the following is slowest primary memory?
(A) Cache
(B) Registers
(C) SRAM
(D) DRAM
27. ROM cannot be:
(A) Read
(B) Non-volatile
(C) Used for BIOS
(D) Programmed multiple times easily
28. Memory used for buffering and temporary storage during processing is:
(A) RAM
(B) ROM
(C) Cache
(D) Registers
29. Which memory type is used in USB flash drives?
(A) ROM
(B) Cache
(C) RAM
(D) Flash memory
30. Which type of RAM is used in modern PCs for higher speed?
(A) DRAM
(B) SRAM
(C) SDRAM
(D) EPROM
31. Which memory unit is part of CPU but smaller than cache?
(A) RAM
(B) ROM
(C) Registers
(D) Flash