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36 Glossary
Glossary
R
ring network A network
configuration where a series of
attaching devices are connected by
unidirectional links to form a
closed path.
ring topology A logically circular,
unidirectional transmission path
without defined ends. Control can
be distributed or centralized. See
topology.
RJ-45 A standard defining the pin
assignments for an 8-pin modular
plug for 4-pair twisted wire
network cable.
S
slot The physical place in the back
of the computer where a card plugs
in. Each slot has a number.
star topology A logically star-
shaped network layout where all
traffic is passed through a single
point (usually a hub). Hubs can
then be connected to form multiple
starts.
Station address A 12-digit
hexadecimal number that
identifies a specific network node,
and allows messages to be directed
to that node only. The first 6 digits
are the same for all cards from a
particular manufacturer. Each
manufacturer is assigned a
different 6-digit value. Then each
card produced by that
manufacturer has a different last
6 digits. This ensures that all cards
from all manufacturers have a
unique station address. HP
manufactures cards with the first
6 digits being 080009 or 0060B0. A
default value is permanently coded
into each card, but this default can
be overridden by the configuration.
T
token ring A network with a ring
topology that uses a token for the
purpose of establishing control.
Control of the network is passed
with the token from one network
device to another.
topology Topology can be physical
or logical. Physical topology is the
configuration of network nodes and
links; a description of the physical
geometric arrangement of the links
and nodes. Logical topology is a
description of the possible logical
connections between network
nodes indicating which pairs of
nodes are able to communicate
whether or not they have a direct
physical connection.