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CBSE Class 12 Informatics Practices Question 65 of 108

Computer Networks — Question 6

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Question

Question 6

What is modem? Define the functioning of internal modem and external modem.

Answer

A MODEM (Modulator Demodulator) is an electronic device that enables a computer to transmit data over telephone lines. It is a device used to convert digital signals into analog signals and vice versa.

The functioning of internal modem and external modem is as follows:

  1. Internal modem — These are attached to the internal slot of the motherboard. They modulate digital data into analog signals for transmission and demodulate incoming analog signals into digital data.

  2. External modem — It is a small box connected to the communication port of the computer. It works similarly to the internal modem. The only difference is that it is placed outside the CPU box.