Lantronix ETS, Справочное руководство

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Glossary tap
Glossary-9
tap A point on the network backbone where other devices can be attached. If the
network is thought of as a freeway, the taps on the network are the on and off
ramps to the freeway (and like freeway access ramps, taps are usually where
network problems occur). Taps may be of several types, including simple “T”
connectors or “Vampire” taps that attach directly to a network cable.
TCP/IP The standard network protocols in UNIX environments. They are almost
always implemented and used together. TCP/IP is an extremely flexible
protocol, allowing reliable access to over four billion possible nodes anywhere
in the world. It also allows many protocols to run on top of it, notably Telnet,
Rlogin, and TFTP. TCP/IP support may be integral to an operating system, as
in UNIX, or it can be a separate product added later as on VMS machines.
Telnet An application that provides a terminal interface between hosts using the TCP/
IP network protocol. It has been standardized so that Telnetting to any host
should give you an interactive terminal session, regardless of the remote host
type or operating system. Note that this is very different from the LAT
software, which allows only local network access to LAT hosts.
Telnet proxy service See proxy service.
10BASE2 Thinwire network cable.
10BASE5 Thickwire network cable.
100BASE-T Fast Ethernet cable. It is similar physically to 10BASE-T, but capable of
higher speeds.
10BASE-T Ethernet running across Unshielded Twisted Pair (UTP) cable. Note that
10BASE-T is a point-to-point network media, with one end of the cable
typically going to a repeater/hub and the other to the network device.
TFTP Trivial File Transfer Protocol. On computers that run the TCP/IP networking
software, TFTP is used to quickly send files across the network with fewer
security features than FTP. TFTP is used by the ETS to download a boot file
in the UNIX environment.
Thickwire One of the major varieties of Ethernet cabling. Thickwire network cable is 1/
2” diameter coax cable. It is generally found on larger networks where a cable
may travel for long distances and usually connects multi-user computers to the
network. It is harder to work with than Thinwire cable, but offers better noise
and error protection and can be run much farther (up to 500m/1500 ft. without
repeaters). Connections to Thickwire networks are usually made with 15-pin
connectors.
Thinwire Thin, co-axial cable similar to that used for television/video hookups and
typically used with BNC-type connectors. Thinwire cable is much easier to
route and work with than Thickwire, but it should not be run more than 185
meters (~600 feet) without using a repeater to reinforce the signal. Thinwire
connectors are usually seen on terminal servers, personal workstations,
networked printers, and in networks where the nodes are all relatively close to
each other.