Networking Cables




Networking cables are of three types they are:

  1. Twisted pair cables
  2. Coaxial cables
  3. Optical cables
We are discussing here only about the twisted pair cables, as they are most widely used for the networking purposes

Twisted pair cable

Twisted pair cabling is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of canceling out electromagnetic interference (EMI) from external sources , there are two types of twisted pair cables they are:

  1. Shielded Twisted Pair Cable (STP)
  2. Unshielded Twisted Pair Cable(UTP)

Shielded Twisted Pair Cable

A shielded cable is an electrical cable of one or more insulated conductors enclosed by a common conductive layer. The shield may be composed of braided strands of copper (or other metal, such as aluminium), a non-braided spiral winding of copper tape, or a layer of conducting polymer. Usually, this shield is covered with a jacket.


The main advantage of the shielded twisted cable is, as they are shielded with a powerful jacket, they will be protected from the external noises like electromagnetic interference.


Due to high cost it is not used now a days

Unshielded Twisted Pair Cable

Unshielded twisted pair, a popular type of cable that consists of two unshielded wires twisted around each other. Due to its low cost, UTP cabling is used extensively for local-area networks, but it has a disadvantage that it is sensitive to electromagnetic interference. Unshielded twisted pair cable is of three types:

Click here to see the Colour Coding