A.Twisted Pair
a.STP
-Shielded twisted pair is a special kind of copper telephone wiring used in some business installations. An outer covering or shield is added to the ordinary twisted pair telephone wires; the shield functions as a ground.
b.UTP
-UTP cable is a 100 ohm copper cable that consists of 2 to 1800 unshielded twisted pairs surrounded by an outer jacket. They have no metallic shield. This makes the cable small in diameter but unprotected against electrical interference. The twist helps to improve its immunity to electrical noise and EMI.
c.coaxial cable
d.fiber optic
-An optical fiber cable, also known as a fiber optic cable, is an assembly similar to an electrical cable, but containing one or more optical fibers that are used to carry light.
What is the difference between straight cable and cross cable
-Straight-through Ethernet cables are the most commonly used. Crossover cables use twodifferent wiring standards: one end uses the T568A wiring standard, and the other end uses the T568B wiring standard. ... For example, a computer with Auto MDI-X can use either a straight-through or crossover cable for any application.
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