Which device is used to convert digital signals to analog signals? MCQ with Answer and Explanation

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Which device is used to convert digital signals to analog signals?

A. Switch

B. Hub

C. Router

D. Modem

Answer: Option D

Solution (By JKSSB Mock Tests)

A modem (modulator-demodulator) converts digital data to analog for transmission over telephone lines and vice versa.

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Question #1

Which of the following is an example of a pointing device?

A. Scanner

B. Microphone

C. Mouse

D. Keyboard

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Correct Answer: Option C

Explanation:
A mouse is a pointing device used to interact with graphical user interfaces.

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Question #2

A network server machine that hosts files, websites, or communication tools for a large corporate department belongs to which category?

A. Embedded Computer

B. Analog Computer

C. Minicomputer / Mid-range Server

D. Supercomputer

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Correct Answer: Option C

Explanation:
Mid-range servers and minicomputers are engineered to handle multi-user business networks and medium-scale database serving operations.

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Question #3

An old-school mechanical device consisting of sliding rules and scale markers used by engineers to calculate multiplication and trigonometry via logarithmic scales is a:

A. Difference Engine

B. Digital Calculator

C. Abacus Unit

D. Slide Rule

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Correct Answer: Option D

Explanation:
The Slide Rule is an early analog mechanical calculating device that uses physical alignment lengths on logarithmic scales to perform math.

This question belongs to: Computer Computer Fundamentals

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