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full duplex A system that all ows p ack ets to be tr ansm itted and recei ved a t the
same time and, in effect, doubles the potential throughpu t of a link.
half duplex A system that allows packets to transmitted and received, but not at
the same time. Contrast with full duplex.
hub A device that regenerates LAN traffic so that the transmission distance
of that signal can be extended. Hubs are similar to repeaters, in that
they connect LANs of the same type; howeve r they c onnect more LANs
than a repeater and are generally more sophisticated.
IEEE Institute of Electrical and Electronics Engineers. This American
organization was founded in 1963 and sets stan dards for compu ters
and communications.
IEEE 802.1D A standard that defines the behavi or of bridges in an Ether net networ k.
IETF Internet Engineering Task Force. An organization responsible for
providing engineering solutions for TCP/IP networks. In the netw ork
management area, this group is responsible for the de velopmen t of the
SNMP protocol.
IP Internet Protocol. IP is a layer 3 network protoc ol that is the st andard
for sending data t hrough a ne twork . IP i s par t of th e TC P/IP set o f
protocols that describe the routing of packets to addressed devices.
IPX Internetwork Packet Exchange. IPX is a layer 3 and 4 network protocol
designed for networks that use Novell Netware.
IP address Internet Protocol address. A unique identifier for a device attached to a
network using TCP/IP. The address is written as four octets separated
with periods (full-stops), and is made up of a net work section, a n
optional subnet section and a host section.
LAN Local Area Network. A network of endstations (suc h as PCs, pr inters,
servers) and network devices (hubs and switches) that cover a relatively
small geographic area (usually not larger than a flo or or buil ding). LAN s
are characterized by high transmission speeds over short distances (up
to 1000m).
line speed See baud .
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