What technology allows a computer system to read data from multiple hard drives simultaneously to improve performance or provide fault tolerance? MCQ with Answer and Explanation

Question

What technology allows a computer system to read data from multiple hard drives simultaneously to improve performance or provide fault tolerance?

A. RAID

B. SATA

C. NVMe

D. DMA

Answer: Option A

Solution (By JKSSB Mock Tests)

RAID (Redundant Array of Independent Disks) is a data storage virtualization technology that combines multiple physical hard drive components into a single logical unit for redundancy or performance.

This question belongs to: Computer Memory and Storage Devices

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Question #1

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Which memory management technique allows a computer to use hard disk space as additional RAM?

A. Paging

B. Cache memory

C. Segmentation

D. Virtual memory

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Correct Answer: Option D

Explanation:
Virtual memory is a memory management technique that uses a portion of the hard disk or SSD as an extension of RAM, allowing the system to run larger applications or multiple programs simultaneously.

This question belongs to: Computer Memory and Storage Devices

Question #2

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In the context of memory, what does 'volatile' mean?

A. Memory cannot be written

B. Memory is permanent

C. Memory requires power to retain data

D. Memory retains data without power

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Correct Answer: Option C

Explanation:
Volatile memory loses its stored data when the power supply is turned off. RAM is a classic example of volatile memory.

This question belongs to: Computer Memory and Storage Devices

Question #3

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Which operational characteristic distinguishes a 'Cold Boot' from a 'Warm Boot' regarding system memory?

A. A cold boot bypasses the execution of the BIOS firmware instructions completely.

B. A warm boot systematically reformats the secondary storage partitions.

C. A cold boot requires cooling the RAM modules manually with specialized fans.

D. A cold boot starts from a complete zero-power state, completely clearing all volatile memory contents.

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Correct Answer: Option D

Explanation:
A cold boot involves turning on a computer from a powered-off state, initializing all hardware and starting with cleared volatile memory, whereas a warm boot simply restarts the OS without cutting hardware power.

This question belongs to: Computer Memory and Storage Devices

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