Which of the following is a type of memory that is used as a buffer between the CPU and main memory? MCQ with Answer and Explanation

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Which of the following is a type of memory that is used as a buffer between the CPU and main memory?

A. Cache memory

B. Hard disk

C. ROM

D. Registers

Answer: Option A

Solution (By JKSSB Mock Tests)

Cache memory acts as a buffer between the fast CPU and slower main memory, storing frequently accessed data to reduce access time.

This question belongs to: Computer Memory and Storage Devices

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Question #1

What is the function of a memory sector on a hard disk?

A. It is the smallest addressable unit of storage

B. It is a buffer for data

C. It is a group of tracks

D. It is a group of cylinders

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Correct Answer: Option A

Explanation:
A sector is the smallest unit of data that can be addressed on a hard disk, typically 512 bytes or 4 KB.

This question belongs to: Computer Memory and Storage Devices

Question #2

What is the role of a memory management unit (MMU)?

A. To handle disk I/O

B. To increase the memory capacity

C. To translate virtual addresses to physical addresses

D. To manage cache memory

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Correct Answer: Option C

Explanation:
The MMU is a hardware component that translates virtual memory addresses used by the CPU into physical addresses in RAM, enabling virtual memory and protection.

This question belongs to: Computer Memory and Storage Devices

Question #3

Which of the following is a characteristic of a magnetic disk?

A. Data is stored using laser

B. Data is stored in flash cells

C. Data is stored in pits

D. Data is stored magnetically on a circular platter

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Correct Answer: Option D

Explanation:
Hard disk drives store data magnetically on rotating platters. Optical discs use pits, and SSDs use flash cells.

This question belongs to: Computer Memory and Storage Devices

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