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

Which device is used to convert digital signals into analog signals for transmission over telephone lines?
A. Repeater
B. Switch
C. Router
D. Modem
Answer: Option D
Solution (By JKExamLibrary)
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 is an example of mass communication?
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D. Television

Correct Answer: Option D


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Television is a mass communication medium that reaches a large audience simultaneously.

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Question #2 Report Error
Which port is located in Kerala and is known for natural harbor facilities?
A. Paradip Port
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Correct Answer: Option B


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Cochin Port in Kerala is a natural harbor on the Arabian Sea coast.

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Which major port is situated at the mouth of the Hooghly River?
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Correct Answer: Option D


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