NetTool
Users Manual
C-4
Client
A client is a computer that makes requests of a server. A
client has only one user; a server is shared by many
users.
Collision
A collision is the result of two or more nodes transmitting
at the same time. Excessive collisions are most often
caused by a problem with the physical media.
Crossed Pair
A wiring error in twisted pair cabling in which a pair on
one connector of the cable is wired to a different pair on
the other end of the cable.
Crosstalk
Crosstalk is electrical interference generated by signal
coupling between wires in a multiwire cable.
CSMA/CD (Carrier Sense, Multiple Access with
Collision Detection)
In CSMA/CD, each node or station has equal access to
the network. Before transmitting, each station waits until
the network is not busy. Since each node has equal
access to the network, a collision (two stations
transmitting at the same time) can occur. If a collision
occurs, the affected nodes will wait a random time to
retransmit. Ethernet uses the CSMA/CD access method.
dBm
Decibels below 1 mW (1 milliwatt). The logarithmic
measure of the ratio of the output power of a signal to an
input signal of 1 mW.
DECnet
Digital Equipment Corporation’s set of communication
protocols for networking computers.
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