Which of the following is a characteristic of magnetic tape storage? MCQ with Answer and Explanation

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Which of the following is a characteristic of magnetic tape storage?

A. Fast random access

B. Used for primary memory

C. Sequential access only

D. Very fast data transfer

Answer: Option C

Solution (By JKSSB Mock Tests)

Magnetic tape is a sequential access medium, meaning data must be read in order. It is used for backup and archival due to high capacity and low cost.

This question belongs to: Computer Memory and Storage Devices

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Question #1

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Which memory location holds the specific CPU machine instruction that is currently being decoded and executed by the internal instruction logic?

A. Instruction Register (IR)

B. The Program Counter

C. Memory Address Register (MAR)

D. The Level 3 Cache

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Correct Answer: Option A

Explanation:
The Instruction Register (IR) is the dedicated high-speed storage location inside the CPU control unit that holds the binary instruction currently undergoing decoding and execution.

This question belongs to: Computer Memory and Storage Devices

Question #2

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What is the typical capacity of a DVD disc used for movies?

A. 25 GB

B. 8.5 GB (dual layer)

C. 4.7 GB (single layer)

D. Both A and B

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Correct Answer: Option D

Explanation:
Commercial DVDs can be single-layer (4.7 GB) or dual-layer (8.5 GB) for longer movies. Both are used.

This question belongs to: Computer Memory and Storage Devices

Question #3

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What is the typical speed of a 5400 RPM hard disk in terms of data transfer?

A. About 200 MB/s

B. About 50 MB/s

C. About 10 MB/s

D. About 100 MB/s (sustained)

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Correct Answer: Option B

Explanation:
5400 RPM HDDs typically have sustained transfer rates around 50-100 MB/s, but 5400 RPM drives are slower than 7200 RPM, often around 50-80 MB/s. However, modern drives may reach 100+ MB/s. For exam, 50-100 MB/s is typical.

This question belongs to: Computer Memory and Storage Devices

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