Which of the following data storage units represents the smallest value? MCQ with Answer and Explanation

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Which of the following data storage units represents the smallest value?

A. 1 Gigabyte

B. 1 Petabyte

C. 1 Terabyte

D. 1 Megabyte

Answer: Option D

Solution (By JKSSB Mock Tests)

Among the options provided, Megabyte (MB) is the smallest unit ($10^6$ or $2^{20}$ bytes), followed by Gigabyte, Terabyte, and Petabyte.

This question belongs to: Computer Memory and Storage Devices

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Question #1

Which of the following memory types is non-volatile and used for long-term storage?

A. ROM

B. Cache

C. Registers

D. RAM

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Correct Answer: Option A

Explanation:
ROM is non-volatile and retains data without power. However, for long-term storage, hard disks and SSDs are more common; ROM is typically used for firmware. Among the options, ROM is non-volatile.

This question belongs to: Computer Memory and Storage Devices

Question #2

Which statement is true regarding Solid State Drives (SSDs) compared to Hard Disk Drives (HDDs)?

A. SSDs are less resistant to physical shocks than HDDs.

B. SSDs have moving mechanical parts and are slower.

C. SSDs consume more power than HDDs.

D. SSDs use flash memory and offer faster data access speeds.

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Correct Answer: Option D

Explanation:
SSDs use non-volatile flash memory, have no moving parts, and deliver significantly higher read/write speeds compared to traditional HDDs.

This question belongs to: Computer Memory and Storage Devices

Question #3

What is the typical speed of a DVD drive at 4x?

A. 6.0 MB/s

B. 4.0 MB/s

C. 8.8 MB/s

D. 5.28 MB/s

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Correct Answer: Option D

Explanation:
1x DVD = 1.32 MB/s, so 4x = 5.28 MB/s.

This question belongs to: Computer Memory and Storage Devices

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