Twisted pair cables are available unshielded (UTP) or shielded (STP), with UTP being the most common. Shielded twisted pair (STP) is used in noisy environments and protects against electromagnetic ...

The bandwidth for twisted pair ... the cable can be further shielded in a variety of ways, either with foil around the individual pairs (U/FTP), around all the pairs (F/UTP), or both (F/FTP).