Page 823 - (ISC)² CISSP Certified Information Systems Security Professional Official Study Guide

Thinnet, also known as 10Base2, was commonly used to connect
systems to backbone trunks of thicknet cabling. Thinnet can span

distances of 185 meters and provide throughput up to 10 Mbps.
Thicknet, also known as 10Base5, can span 500 meters and provide
throughput up to 10 Mbps (megabits per second).

The most common problems with coax cable are or were as follows:

Bending the coax cable past its maximum arc radius and thus
breaking the center conductor

Deploying the coax cable in a length greater than its maximum

recommended length (which is 185 meters for 10Base2 or 500
meters for 10Base5)

Not properly terminating the ends of the coax cable with a 50 ohm
resistor

Not grounding at least one end of a terminated coax cable

Baseband and Broadband Cables

The naming convention used to label most network cable technologies
follows the syntax XXyyyyZZ. XX represents the maximum speed the
cable type offers, such as 10 Mbps for a 10Base2 cable. The next series

of letters, yyyy, represents the baseband or broadband aspect of the
cable, such as baseband for a 10Base2 cable. Baseband cables can
transmit only a single signal at a time, and broadband cables can
transmit multiple signals simultaneously. Most networking cables are
baseband cables. However, when used in specific configurations,
coaxial cable can be used as a broadband connection, such as with
cable modems. ZZ either represents the maximum distance the cable

can be used or acts as shorthand to represent the technology of the
cable, such as the approximately 200 meters for 10Base2 cable
(actually 185 meters, but it’s rounded up to 200) or T or TX for
twisted-pair in 10BaseT or 100BaseTX. (Note that 100BaseTX is
implemented using two Cat 5 UTP or STP cables—one issued for

receiving, the other for transmitting.)
Table 11.8 shows the important characteristics for the most common

network cabling types.