Twisted Pair Cables :
These are a type of guided media. Alexander Graham Bell invented it. Twisted pair cables have two conductors, generally made up of copper, and each conductor has insulation. These two conductors are twisted together, thus giving the name twisted pair cables.
Transmission media can be divided into Guided Media and Unguided Media. In guided media, the signal is contained within the physical limits of the transmission medium and is directed along with it.