Question:
In the process of space communication, use of modem is necessary. In which one of the following modes modem acts as a modulator and a demodulator respectively?
In the process of space communication, use of modem is necessary. In which one of the following modes modem acts as a modulator and a demodulator respectively?
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Modem stands for Modulator–Demodulator; its name itself explains its dual function.
Updated On: Feb 18, 2026
- Transmitting and receiving
- Both receiving
- Both transmitting
- Receiving and transmitting
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The Correct Option is A
Solution and Explanation
Step 1: Function of a modem.
A modem is a device that performs modulation and demodulation of signals.
Step 2: Modulation and demodulation roles.
During transmission, the modem acts as a modulator by converting digital signals into analog signals. During reception, it acts as a demodulator by converting received analog signals back into digital form.
Step 3: Conclusion.
Hence, the modem acts as a modulator in transmitting mode and as a demodulator in receiving mode.
A modem is a device that performs modulation and demodulation of signals.
Step 2: Modulation and demodulation roles.
During transmission, the modem acts as a modulator by converting digital signals into analog signals. During reception, it acts as a demodulator by converting received analog signals back into digital form.
Step 3: Conclusion.
Hence, the modem acts as a modulator in transmitting mode and as a demodulator in receiving mode.
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