DATA LINK LAYER WIRED NETWORKS
CONNECTING DEVICES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Modulation Demodulation
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Modulator Demodulator
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Model Demodulator
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None of the above
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Detailed explanation-1: -A modulator-demodulator or modem is a computer hardware device that converts data from a digital format into a format suitable for an analog transmission medium such as telephone or radio.
Detailed explanation-2: -The word “modem” stands for “modulator-demodulator". A modem’s purpose is to convert digital information to analog signals (modulation), and to convert analog signals back into useful digital information (demodulation).
Detailed explanation-3: -Modem is short for “Modulator-Demodulator.” It is a hardware component that allows a computer or another device, such as a router or switch, to connect to the Internet. It converts or “modulates” an analog signal from a telephone or cable wire to digital data (1s and 0s) that a computer can recognize.