Which communication device converts digital signals into analog signals and vice versa? MCQ with Answer and Explanation

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Which communication device converts digital signals into analog signals and vice versa?

A. Router

B. Switch

C. Modem

D. Repeater

Answer: Option C

Solution (By JKSSB Mock Tests)

A modem modulates and demodulates signals for data communication.

This question belongs to: Geography GK Transport and Communication

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Question #1

Which communication device connects multiple computers within a LAN?

A. Projector

B. Printer

C. Scanner

D. Switch

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Correct Answer: Option D

Explanation:
A network switch connects devices within a local area network.

This question belongs to: Geography GK Transport and Communication

Question #2

Which transport system is most flexible in terms of route selection?

A. Railways

B. Airways

C. Waterways

D. Roadways

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Correct Answer: Option D

Explanation:
Roadways provide door-to-door service and flexibility in route selection.

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Question #3

Which was the first railway line opened for passenger traffic in India?

A. Howrah–Hooghly

B. Delhi–Agra

C. Chennai–Arakkonam

D. Mumbai–Thane

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Correct Answer: Option D

Explanation:
India's first passenger train ran between Mumbai and Thane on 16 April 1853.

This question belongs to: Geography GK Transport and Communication

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