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Lan Cable is Twisted Pair Cable, which 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; for instance, electromagnetic radiation from unshielded twisted pair (UTP) cables, and crosstalk between neighboring pairs.
It is commonly used in network building, communication system construction. Cat5E Cable and Cat6 cable is widely used in people's life, cat7 cable is quicker and more expensive than CAT5 and cat6,so usually used in industrial construction.
Also it can be recognize as shielding:
UTP ,without shielding
FTP ,cable shielding with foil
STP, cable shielding with braiding
SFTP, cable shielding with foil and braiding
SSTP,cable shielding with braiding,pair shielding with foil