COMPUTER SCIENCE AND ENGINEERING
COMPUTER NETWORKING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Modem
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Protocols
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Gateway
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Multiplexer
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Detailed explanation-1: -A modem is an equipment that performs both modulation and demodulation.
Detailed explanation-2: -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-3: -A device that performs both modulation and demodulation is called a modem–a name created by combining the first letters of MOdulator and DEModulator.
Detailed explanation-4: -We in our internet service setup, use a device called modem: a word which is made of abbreviation of ‘MOdulation’ and ‘DEModulation. It is capable of doing both the tasks mentioned above. Hence ‘A’ is the right answer.
Detailed explanation-5: -There are 3 basic types of modulation used in modems: FSK-Frequency Shifted Keying. QPSK-Quadrature Phase Shifted Keying. QAM-Quadrature Amplitude Modulation.