What is the primary function of a memory cache? MCQ with Answer and Explanation

What is the primary function of a memory cache?
A. To provide backup storage
B. To increase the memory capacity
C. To store the operating system
D. To reduce the effective memory access time
Answer: Option D
Solution (By JKSSB Mock Tests)
Cache memory holds frequently accessed data and instructions to reduce the average time to access data from main memory, thus improving system performance.

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Practice More Memory and Storage Devices Questions

Question #1
What is the typical memory capacity of a common USB pen drive as of 2026?
A. 1 GB
B. 2 TB
C. 16 GB to 256 GB
D. 128 MB

Correct Answer: Option C


Explanation:
As of 2026, USB pen drives commonly range from 16 GB to 256 GB or higher. While larger capacities exist, 16-256 GB is typical for mainstream use.

This question belongs to: Computer Memory and Storage Devices
Question #2
What is the term used to describe the organization of matching tracks across all physical platter surfaces in a multi-platter hard disk drive?
A. Block Group
B. Cylinder
C. Cluster
D. Sector Array

Correct Answer: Option B


Explanation:
A cylinder consists of the exact same track number intercepted vertically across all available platter surfaces in a hard disk drive assembly.

This question belongs to: Computer Memory and Storage Devices
Question #3
What does the acronym 'EEPROM' stand for?
A. Electrically Enabled Programmable ROM
B. Extended Erasable PROM
C. Electrically Erasable Programmable Random-Only Memory
D. Electrically Erasable Programmable Read-Only Memory

Correct Answer: Option D


Explanation:
EEPROM stands for Electrically Erasable Programmable Read-Only Memory, which can be erased and reprogrammed electrically, typically used for storing small amounts of data like BIOS settings.

This question belongs to: Computer Memory and Storage Devices