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GLOSSARY 3
IEEE Institute of Electrical and Electronics Engineers. Committees that
develop and propose computer standards, such as the 802 protocols,
which define the physical and data link protocols of communication
networks. Members represent an international cross section of users,
vendors, and engineering professionals.
incoming
flow control
The ability of a device to receive pause frames. See symmetric
flow control.
LAN Local area network. An assembly of computing resources such as PCs,
printers, minicomputers, and mainframe computers linked by a
common transmission medium, such as UTP.
LED Light-emitting diode. A diode that converts voltage to light and that is
commonly used in digital displays.
MAC Media Access Control. The data link sublayer that is responsible for
transferring data to and from the physical layer.
Mbps Megabits per second.
outgoing
flow control
The ability of a device to send pause frames. See Asymmetric
flow control.
partition A repeater function that isolates a particular port from the network
because of an excessive number of collisions. Once the problem
causing the collisions is corrected, the port is reactivated.
pause frame A set of bits that tells a transmitting device to stop the transmission of
data frames for a specified period or to resume the transmission of
data frames.
power workgroup A small number of servers or a small number of sophisticated users
on high-end workstations. A power workgroup requires very high
performance to run applications that move and process massive
amounts of data in real time (for example, medical imaging, video
editing, film postproduction, CAD/CAM, or digital prepress).
repeater A device that extends the length, topology, or interconnectivity of
the physical medium beyond that imposed by a single segment, up
to the maximum allowable end-to-end trunk transmission line length.
Repeaters perform the basic actions of restoring signal amplitude,
waveform, and timing applied to normal data and collision signals.
See also hub.