Networking cables are of three types they are:
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:
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, 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: