Which of the following is a type of memory that is used for caching data from a hard disk? MCQ with Answer and Explanation

Which of the following is a type of memory that is used for caching data from a hard disk?
A. Disk cache
B. CPU cache
C. RAM cache
D. Flash cache
Answer: Option A
Solution (By JKSSB Mock Tests)
Disk cache is a portion of RAM used to temporarily store frequently accessed data from the hard disk to improve performance.

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Practice More Memory and Storage Devices Questions

Question #1
Which problem occurs when software applications continuously allocate memory space in RAM but fail to release it back to the operating system after finishing their tasks?
A. Buffer Overflow
B. Cache Truncation
C. Disk Defragmentation
D. Memory Leak

Correct Answer: Option D


Explanation:
A memory leak happens when a program allocates memory space from the system heap but fails to free it up after use, reducing available RAM until the system slows down or crashes.

This question belongs to: Computer Memory and Storage Devices
Question #2
What hardware feature on an internal motherboard controls the synchronization and flow of data commands arriving from the system RAM to the processor cores?
A. The Expansion Slot Bracket
B. The Sound Card
C. The Power Supply Relay
D. The Memory Controller

Correct Answer: Option D


Explanation:
The memory controller (either standalone on the chipset or integrated directly inside modern CPU dies) manages the electrical signals and data timing for reading and writing to system RAM.

This question belongs to: Computer Memory and Storage Devices
Question #3
What is the main purpose of virtual memory?
A. To increase the physical RAM capacity
B. To reduce the cost of memory
C. To allow programs to use more memory than physically available
D. To speed up memory access

Correct Answer: Option C


Explanation:
Virtual memory enables a computer to use more memory than is physically installed by swapping data between RAM and secondary storage (like a hard disk), allowing large programs to run.

This question belongs to: Computer Memory and Storage Devices