Which device is used to convert digital signals into analog signals for transmission over telephone lines? MCQ with Answer and Explanation

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Which device is used to convert digital signals into analog signals for transmission over telephone lines?

A. Router

B. Modem

C. Switch

D. Repeater

Answer: Option B

Solution (By JKSSB Mock Tests)

A modem modulates and demodulates signals, converting digital data into analog signals and vice versa.

This question belongs to: Geography GK Transport and Communication

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Which communication system allows real-time global video conferencing?

A. Internet

B. Radio

C. Postal mail

D. Telegraph

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Correct Answer: Option A

Explanation:
Internet enables real-time video conferencing worldwide.

This question belongs to: Geography GK Transport and Communication

Question #2

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Which is the main advantage of road transport?

A. Limited access

B. Low speed

C. High cost

D. Door-to-door service

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Correct Answer: Option D

Explanation:
Road transport provides door-to-door service, making it highly flexible and convenient.

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Question #3

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Which is the largest inland water transport state in India?

A. Punjab

B. Haryana

C. Assam

D. Rajasthan

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Correct Answer: Option C

Explanation:
Assam has extensive inland waterways, especially along the Brahmaputra River.

This question belongs to: Geography GK Transport and Communication

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