Which of the following is a characteristic of a DVD-RAM? MCQ with Answer and Explanation

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Which of the following is a characteristic of a DVD-RAM?

A. It is a rewritable optical disc with random access

B. It is read-only

C. It uses a blue laser

D. It has a capacity of 25 GB

Answer: Option A

Solution (By JKSSB Mock Tests)

DVD-RAM is a rewritable optical disc format that allows random access, similar to a hard disk, and can be rewritten many times.

This question belongs to: Computer Memory and Storage Devices

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Question #1

Which structural component of flash memory traps electrons to represent binary ones and zeros?

A. Floating Gate Transistor

B. Capacitor bank

C. Magnetic core

D. Mechanical relay

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Correct Answer: Option A

Explanation:
Flash memory uses floating gate transistors to trap electrical charges (electrons). The presence or absence of charge alters voltage thresholds, representing 0 or 1.

This question belongs to: Computer Memory and Storage Devices

Question #2

What is the function of the read/write head in a hard disk?

A. To rotate the platter

B. To move the actuator arm

C. To store data on the platter

D. To read and write data magnetically on the platter

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Correct Answer: Option D

Explanation:
The read/write head contains electromagnetic coils that read data by sensing magnetic fields and write data by changing the magnetic polarity on the platter surface.

This question belongs to: Computer Memory and Storage Devices

Question #3

What is the purpose of a memory module's heatsink?

A. To increase memory capacity

B. To improve memory speed

C. To protect against physical damage

D. To dissipate heat generated by the memory chips

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Correct Answer: Option D

Explanation:
Heatsinks on RAM modules help dissipate heat, especially on high-performance memory running at higher speeds, to maintain stability.

This question belongs to: Computer Memory and Storage Devices

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