IBM 8237, Инструкция по установке и эксплуатации

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8237 Hub Installation and Planning Guide
physical medium that conveys data between data
stations; for example, twisted-pair wire, optical fiber,
coaxial cable. (T)
trap. In the Simple Network Management Protocol
(SNMP), a message sent by a managed node (agent
function) to a management station to report an
exception condition.
Trivial File Transfer Protocol (TFTP). In TCP/IP, a
protocol used for transferring files to and from host
computers. It is a simpler form of the File Transfer
Protocol, requiring no authentication and using less
memory for storage.
twisted pair. A transmission medium that consists of
two insulated conductors twisted together to reduce
noise. (T)
U
universally administered address. The address
permanently encoded in an adapter at the time of
manufacture. All universally administered addresses
are unique. Contrast with
locally administered address.
unshielded twisted pair (UTP). One or more twisted
pairs of copper wire in the unshielded voice-grade
cable commonly used to connect a telephone to its wall
jack.
UTP. Unshielded twisted pair.
V
V. Volt.
VT100. A character-mode workstation. Characters are
sent immediately to the host system when a key is
pressed.
variable. (1) In computer programming, a character or
group of characters that refers to a value and, in the
execution of a computer program, corresponds to an
address. (2) A quantity that can assume any of a given
set of values. (A)
version. A separate IBM-licensed program, based on
an existing IBM-licensed program, that usually has
significant new code or new function.
W
watt. Measurement of electrical power.
workstation. (1) An I/O device that allows either
transmission of data or the reception of data (or both)
from a host system, as needed to perform a job: for
example, a display station or printer. (2) A
configuration of I/O equipment at which an operator
works. (T) (3) A terminal or microcomputer, usually one
connected to a mainframe or network, at which a user
can perform tasks.
write community. In SNMP, one or more network
management stations that are known to a given agent
and that are authorized to write to the MIB.
write community name. A text name that defines the
write community: a password.
X
XMODEM. A protocol for file transfer between devices
that specifies the sending of data in 123-byte blocks
and is error-correcting.