DATA LINK LAYER WIRED NETWORKS
DATA LINK CONTROL DLC
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Indicate the false statement. Modulation is used to
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reduce the bandwidth used
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separate differing transmissions
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ensure that intelligence may be transmitted over long distances
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allow the use of practicable antennas
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Explanation:
Detailed explanation-1: -Increasing the modulating signal beyond that point, known as overmodulation, causes a standard AM modulator (see below) to fail, as the negative excursions of the wave envelope cannot become less than zero, resulting in distortion ("clipping") of the received modulation.
Detailed explanation-2: -The thermal noise of a noisy resistor is proportional to bandwidth and temperature only, hence the power remains unchanged even if we double the values of given resistors.
There is 1 question to complete.