PHYSICAL LAYER AND TRANSMISSION MEDIA
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -Data compression can increase the throughput of a communication link. A codec converts an incoming digital signal to an analog signal for transmission over an analog network. One way to reduce quantizing errors is to increase the sampling rate of the analog signal.
Detailed explanation-2: -ASCII is the least popular code for data communications. The predominant method of transferring information internally in a computer is via parallel mode. Serial mode transmission is much faster than parallel mode transmission.
Detailed explanation-3: -Although single-mode optical fiber holds advantages in terms of bandwidth and reach for longer distances, multimode optical fiber easily supports most distances required for enterprise and data center networks, at a cost significantly less than single-mode.