User’s Manual
21
concentrator
Device used in a LAN to combine
transmissions from a cluster of nodes;
often called a hub
CRC
Cyclical redundancy check; a procedure
used to check for errors in data
transmission
desktop
switch
A switching hub designed to support a
single MAC address, or client on each
port
EIFO
Ethernet in, FDDI out
Ethernet
Networking standard for transmitting
data at 10Mbps
Fast Ethernet Networking standard for transmitting
data at 100Mbps
Fiber-optic
cable
Cable made of thin glass threads that
carry data in the form of light pulses
firmware
software routines that are permanently
written onto read-only memory
full-duplex
a communications technique that allows
bi-directional, simultaneous
transmission between two devices on a
single 10Base-T segment
Gigabit
Ethernet
networking standard for transmitting
data at 1000Mbps
half-duplex
a communications technique in which
one device on a segment transmits while
the other receives, then the process is
reversed
hub
a device providing a common
connection among computers in a star-
type network; all ports within a hub
share the total bandwidth of the domain