Which component uses magnetic fields for data storage? MCQ with Answer and Explanation

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Which component uses magnetic fields for data storage?

A. RAM

B. Traditional HDD

C. Cache

D. SSD

Answer: Option B

Solution (By JKSSB Mock Tests)

Platters and read/write heads.

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Question #1

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A common wireless input device is:

A. Bluetooth mouse

B. VGA monitor

C. Wired keyboard

D. USB scanner

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Correct Answer: Option A

Explanation:
Bluetooth enables wireless connectivity.

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Question #2

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Biometric input devices enhance:

A. Security through unique traits

B. Printing speed

C. Display quality

D. Cooling

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Correct Answer: Option A

Explanation:
Fingerprint, face, iris etc.

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Question #3

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What is the use of a cooling pad for laptops?

A. To reduce overheating

B. To increase battery life

C. To scan documents

D. To improve typing

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Correct Answer: Option A

Explanation:
Extra fans help with heat dissipation.

This question belongs to: Computer Computer Hardware

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