PHYSICAL LAYER AND TRANSMISSION MEDIA
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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wrapping the bundle of wires with metallic shielding
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requiring proper grounding connections
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avoiding sharp bends during installation
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designing a cable infrastructure to avoid crosstalk interference
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twisting opposing circuit wire pairs together
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Detailed explanation-1: -Increasing the twisting frequency of the wires can reduce the crosstalk influence in unshielded cable pairs. It prevents interference crossover between twisted cable pairs. To reduce crosstalk in data communications, shielded pairs of twisted cables are more effective than unshielded twisted pairs.
Detailed explanation-2: -In twisted pair cabling, the twist helps cancel crosstalk. So, when wires are not tightly twisted, crosstalk happens. To prevent crosstalk, wire pairs in a Cat5e cable should not be untwisted more than 0.5 inches and not more than 0.375 inches for Cat6 cables.
Detailed explanation-3: -Minimum width among traces. Keep traces on adjacent layers perpendicular. Use ground planes. Exploit ground return path. Use differential signals. Reduce the width of parallel traces. Isolate high frequency signals from other traces. Isolate asynchronous signals.