Coaxial cable | <Twisted Pair> | Fiber optic | Wireless radio | Wireless infrared

   Twisted pair is so named because the cable is actually made up of a number of single copper wires that are twisted together.

   Twisted pair comes in 2 major flavors: unshielded twisted pair (UTP) and shielded twisted pair (STP). The big difference between UTP and STP is that the STP wires are encased in a foil wrap that protects them from interference.

   UTP is the most commonly used networking wiring. It is inexpensive, flexible, and light, thus making it very easy to work with.

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