Which is a contactless input technology? MCQ with Answer and Explanation

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Which is a contactless input technology?

A. Mechanical switches

B. RFID and NFC

C. Membrane keyboard

D. Trackball

Answer: Option B

Solution (By JKSSB Mock Tests)

Proximity reading.

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Question #1

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An OMR scanner is used for:

A. Text recognition

B. Barcode

C. Reading marked bubbles in exams

D. Photo scanning

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Correct Answer: Option C

Explanation:
Competitive exam answer sheets.

This question belongs to: Computer Computer Hardware

Question #2

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What is the main use of a webcam in hardware context?

A. Processing

B. Output device

C. Storage

D. Video input for conferencing

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Correct Answer: Option D

Explanation:
Essential for remote communication.

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Question #3

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What does 'hyper transport' or 'infinity fabric' refer to?

A. AMD's high-speed CPU interconnect

B. Monitor cable

C. Storage protocol

D. Intel technology

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Correct Answer: Option A

Explanation:
Internal CPU communication.

This question belongs to: Computer Computer Hardware

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