PHYSICAL LAYER AND TRANSMISSION MEDIA
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Because UTP cable is auto immune to EMI and RFI.
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Because UTP counters Crosstalk by twisting and placing the cables close together
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None of them
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None of the above
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Detailed explanation-1: -U/UTP: UNSHIELDED TWISTED PAIRS Also known as UTP, this is currently the most common and basic method of cable construction, consisting of pairs of wires twisted together. There is no shielding, instead the symmetrical twist in the wires create a balanced transmission line, helping to reduce electrical noise and EMI.
Detailed explanation-2: -A twisted-pair cabling system is a cable consisting of one or several pairs of copper wires. These wires are twisted together and around each other and are insulated with a dielectric polymeric compound. Twisting helps minimize electromagnetic radiation and resists external interference.
Detailed explanation-3: -Reduce EMI with “The Twist” When it comes to twisted pair cable and wire, there is unshielded twisted pair cable (UTP), and shielded twisted pair cable (STP), wrapped with a metallic foil to shield electrostatic and increase the speed of data transfer.