Appendix E
Glossary
Page E-9
N
Near End Crosstalk (NEXT) - Noise coupled between two twisted
pairs measured at the same end of the cable as the disturbing
signal source.
Network - A collection of nodes interconnected by a medium.
Network Interface Card (NIC) - The circuit card that interfaces a
station to the network.
Network Manager - A program that is used to monitor, manage,
and diagnose the problems of a network medium.
Node - Connecting point on a network. A station or device on a
network.
Noise - Any random disturbance in a communications system that
interferes with the integrity of the transmitted data.
NVP - Nominal Velocity of Propagation, the speed of signal
propagation through a cable, expressed as a percentage of
the speed of light in a vacuum.
O
Ohm - Unit of measure for resistance.
Open - A break in the connection between the two ends of a wire or
cable.
OSI - Open Systems Interconnect, a seven layer architecture that
serves as a model between systems.
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