What type of storage is a computer's main memory (RAM) categorized as? MCQ with Answer and Explanation

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What type of storage is a computer's main memory (RAM) categorized as?

A. Secondary Volatile Storage

B. Tertiary Non-volatile Storage

C. Primary Non-volatile Storage

D. Primary Volatile Storage

Answer: Option D

Solution (By JKSSB Mock Tests)

RAM is directly accessible by the CPU (making it primary memory) and requires power to maintain data (making it volatile).

This question belongs to: Computer Memory and Storage Devices

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Question #1

What is the typical storage capacity of a standard DVD?

A. 25 GB

B. 700 MB

C. 128 GB

D. 4.7 GB

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Correct Answer: Option D

Explanation:
A standard single-layer DVD holds about 4.7 GB (or 4.38 GiB) of data. A CD holds ~700 MB, Blu-ray single layer ~25 GB, and pen drives vary.

This question belongs to: Computer Memory and Storage Devices

Question #2

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

A. DMA

B. NVMe

C. RAID

D. SATA

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Correct Answer: Option C

Explanation:
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

Question #3

Which physical attribute limits the maximum total storage volume capacity of a standard optical disc?

A. The track pitch distance and the wavelength of the reading laser beam.

B. The physical thickness of the label paper.

C. The type of plastic used in the outer tray assembly.

D. The rotational speed of the spindle electric motor.

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Correct Answer: Option A

Explanation:
Optical data capacity depends on how tightly tracks can be spaced (track pitch) and how small the laser's focal point can be, which is determined by the laser's wavelength.

This question belongs to: Computer Memory and Storage Devices

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