UTP (Unshielded twisted pair): Does not include any shielding.
FTP (Foiled twisted pair): It has a shield between the sheath and the twisted pairs of wires.
STP (Shielded twisted pair): Each twisted pair is individually shielded.
SFTP (Shielded and foiled twisted pair): It has a shield between the sheath and the cables and, in addition, each twisted pair of wires is individually shielded.