3.1.10+Outline+the+characteristics+of+different+transmission+media

Fibre Optics
An optical fibre is a thin, flexible medium which conducts quick pulses of light which each represent one bit. Fibre optics can transfer humdreds of gigabits per second and cant take electromagnetic interfearance, making it the preferred choice of long-haul transmission media.

Twisted Pair
The twisted pair copper cables are the most inexpensive type of transmission media and has been used for many years by phone companies. Two copper wires are twisted together and coated with a protective layer.

Coaxial Cable
Like twisted pair, coaxial cable consists of two copper wires, but instead of being parallel, they are concentric. With the construction and special type of shielding and insulation, the coaxial cable can carry a lot more bits much faster than the twisted pair.