FC0-U61 · Question #355
Which of the following statements is true about modem?
The correct answer is B. It converts digital signals into analog signals and vice versa.. A modem (modulator-demodulator) is a networking device that converts digital signals from a computer into analog signals for transmission over analog lines and converts analog signals back into digital signals.
Question
Which of the following statements is true about modem?
Options
- AIt amplifies the digital signals.
- BIt converts digital signals into analog signals and vice versa.
- CIt reduces the noise in analog signal.
- DIt converts AC current to DC current and vice versa.
How the community answered
(23 responses)- A4% (1)
- B91% (21)
- C4% (1)
Why each option
A modem (modulator-demodulator) is a networking device that converts digital signals from a computer into analog signals for transmission over analog lines and converts analog signals back into digital signals.
Amplifying signals is typically a function of repeaters or amplifiers, not modems, which focus on signal conversion.
A modem's primary function is to modulate digital data into an analog signal for transmission over a medium like telephone lines or cable, and to demodulate incoming analog signals back into digital data for the computer. This modulation-demodulation process allows digital devices to communicate over analog transmission systems.
While some network devices might have noise reduction features, it's not the defining primary function of a modem.
Converting AC to DC current is the function of a power supply unit or an AC adapter, not a modem.
Concept tested: Modem function and operation
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