3Com 4005 Installation And Maintenance Manual page 75

G 75
LOSSARY
star-wired LAN topology in which end points on a network are connected to a common
central switch or repeater by point-to-point links. Ethernet networks often use the
star topology. A ring topology that is organized as a star, such as Token Ring,
implements a unidirectional closed-loop star, instead of point-to-point links.
topology The physical or logical placement of stations on a network in relation to one
another.
torque The amount of force exerted to tighten a screw, bolt, or nut.
twisted pair Two insulated copper wires that are wrapped around each other for protection
against interference. Each wire is insulated, and the pair is usually covered by an
overall casing. This type of wiring is often used in Ethernet network
infrastructures, sometimes called cable plants.
UTP Unshielded Twisted Pair. Common, phone-grade, twisted pair wiring that is not
provided with a protective shielding against outside interference. Contrasts with
STP, or shielded twisted pair.
WAN Wide Area Network. A data communications network that spans very large
geographical areas.
VLAN Virtual LAN. A logical association that allows users to communicate as if they were
physically connected to a single LAN, independent of the actual physical
configuration of the network.
wiring closet An area in a building that is used for wiring networking devices and telephone
communication systems.