HP 733/800/866MHz 1GHz, Руководство администратора

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111 English
Glossary
Ethernet Address Also known as
the IEEE address, this is a unique
numeric identifier of a node on an
Ethernet LAN.
Extended ASCII
The Extended
ASCII character set encoding scheme
was defined by IBM in 1981 to be used
by the IBM PC. It contains 256
characters and is, as the name
suggests, a superset of ASCII.
fiber optic A data transmission
method that uses light pulses sent
over glass or plastic threads (fibers).
Message transmission is close to the
speed of light.
flash memory A special type of
EEPROM that can be erased and
reprogrammed inside a computer.
Conventional EEPROMs require a
special device called a PROM reader.
Flash memory is non-volatile and does
not lose its contents when power is
turned off.
frame A group of bits that include
data plus one or more addresses. A
frame generally refers to a link layer
(OSI Model layer 2) protocol.
full-duplex A method of two-way
communication over a single physical
link. Offers advantages over half-
duplex by allowing both parties to talk
simultaneously. Can be used to
double communication speeds
between a PC and a special network
Hub.
half-duplex A method of two-way
communication over a single physical
link. Only one party can transmit at a
time, the other party remaining silent
to avoid interference. To provide two-
way communication, each party takes
it in turns to transmit. This is the
method of communication most often
used between a PC and a network
Hub.
hub A general term frequently used
instead of repeater.
IEEE
Institute of Electrical and
Electronics Engineers. Founded in
1963, the IEEE is an organization
composed of scientists, engineers,
and students. The IEEE is best known
for its work in establishing standards
for the computer and electronics
industry.
IEEE 802 A committee of the
Institute of Electrical and Electronics
Engineers (IEEE). IEEE 802 was
organized to establish standards for
the physical and electrical
connections used in LANs.
IEEE 802.3 A subcommittee of the
Institute of Electrical and Electronics
Engineers (IEEE) 802 committee.
IEEE 802.3 was organized to establish
standards for Ethernet, a 10-Mbps
baseband LAN.
IEEE 802.12 A subcommittee of
the Institute of Electrical and
Electronics Engineers (IEEE) 802
committee. IEEE 802.12 was
organized to establish standards for
demand priority LANs.