Cisco® Network Professional's: Advanced Internetworking Guide

B

B8ZS

Binary 8-Zero Substitution: A line-code type, interpreted at the remote end of the connection, that uses a special code substitution whenever eight consecutive zeros are transmitted over the link on T1 and E1 circuits. This technique assures ones density independent of the data stream. Also known as bipolar 8-zero substitution. Contrast with: AMI. See also: ones density.

backbone

The basic portion of the network that provides the primary path for traffic sent to and initiated from other networks.

back end

A node or software program supplying services to a front end. See also: server.

bandwidth

The gap between the highest and lowest frequencies employed by network signals. More commonly, it refers to the rated throughput capacity ...