what is twisted pair cable in computer network

what is twisted pair cable in computer network

Twisted Pairs Cables

Twisted pair cable consists of color-coded pairs of insulated coper wires. The cables in a pair are twisted around each other, which helps to reduce the effect of crosstalk. In a twisted pair cable there are usually 4 pairs of cables. Twisted pair cables are available in two forms.

Shielded Twisted Pair (STP) cables consist of twisted wire pairs individually insulated as well as surrounded by a shielding. The shielding acts as an antenna which minimizes the noise.

Unshielded Twisted Pair (UTP) cables consist of insulated twisted pair inside a plastic seath. The lack of shielding makes it both less expensive and less resistant to noise as compared to STP. UTP cables use small plastic connector, known as RJ-45, to connect the cable to the NIC. 

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