IBM Netfinity 3500, Руководство пользователя

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network . (1) An arrangement of
nodes and connecting branches. (T)
(2) A configuration of data
processing devices and software
connected for information
interchange.
network server
. See server.
nonvolatile . (1) Pertaining to a
storage device whose contents are
not lost when power is cut off. (T)
(2) Contrast with volatile.
O
OBI . Options by IBM.
operating system . Software that
controls the execution of programs
and that may provide services such
as resource allocation, scheduling,
input/output control, and data
management. Although operating
systems are predominantly software,
partial hardware implementations
are possible. (T)
P
packet . In data communication, a
sequence of binary digits, including
data and control signals, that is
transmitted and switched as a
composite whole. The data, control
signals, and possibly error control
information are arranged in a
specific format. (I)
parallel port . An access point
through which a computer transmits
or receives data that consists of
several bits sent simultaneously on
separate wires. Contrast with serial
port.
parity bit . A check bit appended to
an array of binary digits to make
the sum of all the binary digits,
including the check bit, always odd
or always even. (A)
PCI . Peripheral component
interconnect.
performance . One of the two major
factors, together with facility, on
which the total productivity of a
system depends. Performance is
largely determined by a
combination of throughput,
response time, and availability.
physical . (1) Pertaining to actual
implementation or location as
opposed to conceptual content or
meaning. (A) (2) Contrast with
logical. (A)
pin . One of the conducting contacts
of an electrical connector.
port . An access point for data entry
or exit. (Contrast with connector.)
POST . Power-on self-test.
power-on self-test (POST) . A
series of diagnostic tests that are run
automatically by a device when the
power is turned on.
processing . The performance of
logical operations and calculations
on data, including temporary
retention of data in microprocessor
Glossary
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