PHYSICAL LAYER AND TRANSMISSION MEDIA
TRANSMISSION MEDIA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Coaxial Cable.
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Fiber-Optic Cable.
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Shielded Twisted Pair Cable.
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Unshielded Twisted Pair Cable.
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Detailed explanation-1: -Shielded and twisted pair cables offer higher signal integrity. Fiber optic cable can also be substituted for copper cables as it is not susceptible to EMI.
Detailed explanation-2: -Electromagnetic interference (EMI) or radio frequency interference (RFI)-EMI and RFI signals can distort and corrupt the data signals being carried by copper media. Potential sources of EMI and RFI include radio waves and electromagnetic devices such as fluorescent lights or electric motors as shown in the figure.
Detailed explanation-3: -The correct answer is coaxial cable. It has a consisting of braided wires, metal foil, or a combination of both. Because of this shield, coax is highly resistant to electromagnetic interference (EMI).