Which storage device category requires continuous physical rotation of a platter medium to retrieve saved digital blocks? MCQ with Answer and Explanation

Question

Which storage device category requires continuous physical rotation of a platter medium to retrieve saved digital blocks?

A. USB Flash Drive

B. NVMe M.2 Card

C. SDHC Card

D. Hard Disk Drive (HDD)

Answer: Option D

Solution (By JKSSB Mock Tests)

Traditional mechanical HDDs use an electric spindle motor to rotate magnetic platters past stationary read/write heads to locate data.

This question belongs to: Computer Memory and Storage Devices

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Question #1

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What is the primary operational objective of implementing a 'Write-Through' design pattern inside a CPU cache architecture?

A. To force data straight into external backup clouds.

B. To write data to both the cache block and the main system memory simultaneously to maintain data consistency.

C. To bypass the main memory entirely during computational loops.

D. To accelerate data deletion routines.

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Correct Answer: Option B

Explanation:
A write-through cache policy ensures that whenever data is modified in the cache, it is immediately written to the main memory as well, maintaining data synchronization across levels.

This question belongs to: Computer Memory and Storage Devices

Question #2

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Which of the following is a non-volatile semiconductor memory that can be erased and reprogrammed in large blocks rather than byte-by-byte?

A. SRAM

B. DRAM

C. Mask ROM

D. Flash Memory

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Correct Answer: Option D

Explanation:
Flash memory is a variation of EEPROM that is erased and programmed in large blocks or sectors, making it ideal for SSDs, pen drives, and SD cards.

This question belongs to: Computer Memory and Storage Devices

Question #3

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What is the average access time of a hard disk typically composed of?

A. Seek time + Rotational latency

B. Rotational latency + Transfer time

C. Seek time + Rotational latency + Transfer time

D. Seek time + Transfer time

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Correct Answer: Option C

Explanation:
The average access time for a hard disk is the sum of seek time (head movement), rotational latency (waiting for sector), and transfer time (reading/writing data).

This question belongs to: Computer Memory and Storage Devices

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