What does the acronym 'HDD' stand for? MCQ with Answer and Explanation

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What does the acronym 'HDD' stand for?

A. Hybrid Digital Drive

B. Heavy Duty Drive

C. High Density Drive

D. Hard Disk Drive

Answer: Option D

Solution (By JKSSB Mock Tests)

HDD stands for Hard Disk Drive, a data storage device using magnetic storage on rotating platters.

This question belongs to: Computer Memory and Storage Devices

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Question #1

What is the typical capacity of a single-layer Blu-ray disc?

A. 25 GB

B. 50 GB

C. 100 GB

D. 4.7 GB

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Correct Answer: Option A

Explanation:
A single-layer Blu-ray disc can hold about 25 GB of data. Dual-layer discs hold 50 GB, and triple/quadruple layers can go higher.

This question belongs to: Computer Memory and Storage Devices

Question #2

What is the typical access time of a CD-ROM drive?

A. About 100 ms

B. About 1 ms

C. About 10 ms

D. About 0.1 ms

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Correct Answer: Option A

Explanation:
CD-ROM drives have access times around 100-200 ms. Hard disks are around 5-10 ms, and SSDs are

This question belongs to: Computer Memory and Storage Devices

Question #3

Which type of cache memory is typically built directly into the processor chip itself and is the fastest among all cache layers?

A. L2 Cache

B. L1 Cache

C. L4 Cache

D. L3 Cache

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Correct Answer: Option B

Explanation:
L1 cache (Level 1) is the closest and fastest memory layer integrated directly inside the CPU core.

This question belongs to: Computer Memory and Storage Devices

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