Which communication medium uses light signals through glass fibers? MCQ with Answer and Explanation

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Which communication medium uses light signals through glass fibers?

A. Radio

B. Telegraph

C. Satellite

D. Fiber Optics

Answer: Option D

Solution (By JKSSB Mock Tests)

Fiber optic communication transmits data using light through thin glass fibers.

This question belongs to: Geography GK Transport and Communication

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Which is the main function of a logistics system?

A. Weather forecasting

B. Entertainment

C. Air traffic control

D. Efficient movement and storage of goods

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Correct Answer: Option D

Explanation:
Logistics systems manage efficient movement, storage, and distribution of goods.

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Question #2

What does PIN in PIN Code stand for?

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Correct Answer: Option A

Explanation:
PIN stands for Postal Index Number and helps identify specific postal regions.

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Question #3

Which major communication revolution enabled global video calling and instant messaging?

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B. Railway Revolution

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Correct Answer: Option A

Explanation:
Advances in digital communication technologies and the internet enabled services such as video calling and instant messaging.

This question belongs to: Geography GK Transport and Communication

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