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

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Which communication technology uses light signals through glass fibers?

A. Satellite communication

B. Radio waves

C. Telegraph

D. Optical fiber communication

Answer: Option D

Solution (By JKSSB Mock Tests)

Optical fiber communication uses light pulses through glass fibers for high-speed data transmission.

This question belongs to: Geography GK Transport and Communication

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Question #1

Which airport is known as the first airport in India to operate completely on solar power?

A. Cochin International Airport

B. Mumbai Airport

C. Delhi Airport

D. Jaipur Airport

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Correct Answer: Option A

Explanation:
Cochin International Airport became the world's first fully solar-powered airport.

This question belongs to: Geography GK Transport and Communication

Question #2

Which state has the longest coastline in India?

A. Andhra Pradesh

B. Gujarat

C. Tamil Nadu

D. Maharashtra

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Correct Answer: Option B

Explanation:
Gujarat has the longest coastline among Indian states, making it important for maritime transport.

This question belongs to: Geography GK Transport and Communication

Question #3

Which railway station is known as the busiest in India?

A. Howrah Junction

B. Chennai Central

C. Mumbai CST

D. New Delhi Railway Station

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Correct Answer: Option A

Explanation:
Howrah Junction handles extremely high passenger traffic.

This question belongs to: Geography GK Transport and Communication

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