PHYSICAL LAYER AND TRANSMISSION MEDIA
DATA AND SIGNALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It is best describe as the unwanted electrical or electromagnetic energy that degrades the quality of signals and data.
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Data
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Signal
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Communication
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Noise
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Explanation:
Detailed explanation-1: -Statistical noise is unexplained variability within a data sample. The term noise, in this context, came from signal processing where it was used to refer to unwanted electrical or electromagnetic energy that degrades the quality of signals and data.
Detailed explanation-2: -Keep the signal wires short. Keep the wires away from electrical machinery. Use twisted together wires. Use differential inputs to remove noise common the both wires. Use an integrating A-D converter to reduce mains frequency interference. Filter the signal.
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