Which input device can replace a mouse in laptops? MCQ with Answer and Explanation

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Which input device can replace a mouse in laptops?

A. Trackball external

B. Joystick

C. All

D. Touchpad

Answer: Option C

Solution (By JKSSB Mock Tests)

Multiple options available.

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Question #1

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What is the role of a DMA controller?

A. CPU intensive tasks

B. Audio mixing

C. Graphics only

D. Direct data transfer bypassing CPU

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Correct Answer: Option D

Explanation:
Efficiency in I/O.

This question belongs to: Computer Computer Hardware

Question #2

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A common use of webcams in competitive exam context is:

A. Online proctoring

B. Scanning answers

C. Printing admit cards

D. Typing questions

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Correct Answer: Option A

Explanation:
For remote examinations.

This question belongs to: Computer Computer Hardware

Question #3

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Which storage interface is backward compatible with SATA?

A. All are

B. Some NVMe but primarily eSATA

C. None

D. PCIe only

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Correct Answer: Option B

Explanation:
External SATA for compatibility.

This question belongs to: Computer Computer Hardware

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