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. Satellite

C. Telegraph

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 port is called the 'Gateway of India'?

A. Kolkata Port

B. Chennai Port

C. Mumbai Port

D. Kandla Port

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Correct Answer: Option C

Explanation:
Mumbai Port is often called the Gateway of India due to its major role in trade.

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Question #2

Which railway station is known as India's cleanest railway station in multiple surveys?

A. Lucknow Junction

B. Howrah Junction

C. Indore Junction

D. Patna Junction

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Correct Answer: Option C

Explanation:
Indore Junction has consistently ranked among the cleanest railway stations in India.

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Question #3

Which organization regulates telecom services in India?

A. NHAI

B. IRDAI

C. SEBI

D. TRAI

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Correct Answer: Option D

Explanation:
Telecom Regulatory Authority of India (TRAI) regulates telecommunications services in India.

This question belongs to: Geography GK Transport and Communication

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