Page 824 - (ISC)² CISSP Certified Information Systems Security Professional Official Study Guide

TABLE 11.8 Important characteristics for common network
cabling types

Type Max Distance Difficulty Susceptibility
speed of to EMI
installation

10Base2 10 185 Medium Medium
Mbps meters

10Base5 10 500 High Low
Mbps meters

10BaseT (UTP) 10 100 Low High
Mbps meters

STP 155 100 Medium Medium
Mbps meters

100BaseT/100BaseTX 100 100 Low High
Mbps meters

1000BaseT 1 Gbps 100 Low High
meters

Fiber-optic 2+ 2+ High to None
Gbps kilometers medium

Twisted-Pair

Twisted-pair cabling is extremely thin and flexible compared to
coaxial cable. It consists of four pairs of wires that are twisted around
each other and then sheathed in a PVC insulator. If there is a metal foil
wrapper around the wires underneath the external sheath, the wire is
known as shielded twisted-pair (STP). The foil provides additional
protection from external EMI. Twisted-pair cabling without the foil is
known as unshielded twisted-pair (UTP). UTP is most often used to

refer to 10BaseT, 100BaseT, or 1000BaseT.

The wires that make up UTP and STP are small, thin copper wires that
are twisted in pairs. The twisting of the wires provides protection from
external radio frequencies and electric and magnetic interference and
reduces crosstalk between pairs. Crosstalk occurs when data