EMM-E6 Ethernet User's Guide

Console to Decryption
GL - 4 EMM-E6 User’s Guide
Console See Terminal.
Cross-Over A length of multi-stranded cable in which the transmit
wire(s) of one end is/are crossed over within the cable to
connect to the receive wire(s) of the other end. Cross-
Overs are used to connect devices to like devices, ensuring
that transmit and receive connections are properly made.
Crosstalk A corruption of the electrical signal transmitted through a
Shielded or Unshielded twisted pair cable. Crosstalk refers
to signals on one strand or set of strands affecting signals
on another strand or set of strands.
CSMA/CD Carrier Sense Multiple Access with Collision Detection.
CSMA/CD is the basis for the operation of Ethernet
networks. CSMA/CD is the method by which stations
monitor the network, determine when to transmit data, and
what to do if they sense a collision or other error during
that transmission.
Data Information, typically in the form of a series of bits, which
is intended to be stored, altered, displayed, transmitted, or
processed.
Data Loop A condition caused by the creation of duplicate paths
which network transmissions could follow. Data loops are
created by the use of redundant connections between
network segments or devices. Ethernet networks cannot
effectively function with data loops present. To allow the
creation of fault-tolerant networks, data loops are
automatically detected and eliminated by the Spanning
Tree algorithm.
DB15 A 15-pin connector used to terminate transceiver cables
in accordance with the AUI specification.
DB9 A 9-pin connector, typically used in Token Ring networks
and for serial communications between computers.
Decryption The translation of data from an encrypted form into a
form both recognizable and utilizable by a workstation,
node, or network device.
CH1Book Page 4 Wednesday, March 20, 1996 7:48 AM