IBM Netfinity 3000, User Handbook Manual, Page: 336 / 370

local area network (LAN) . (1) A
computer network located on a
user's premises within a limited
geographical area. Communication
within a local area network is not
subject to external regulations;
however, communication across the
LAN boundary may be subject to
some form of regulation. (T) (2) A
network in which a set of devices
are connected to one another for
communication and that can be
connected to a larger network.
logical . (1) Pertaining to content or
meaning as opposed to location or
actual implementation. (A)
(2) Pertaining to a view or
description of data that does not
depend on the characteristics of the
computer system or the physical
storage. (A) (3) Contrast with
physical. (A)
LUN . Logical unit number.
M
MAC . Medium access control.
math coprocessor . In
personal-computer systems, a
microprocessor that supplements the
operations of the system
microprocessor, enabling the
computer to perform complex
mathematical operations in parallel
with other operations.
MAU
. Medium attachment unit.
Mbps . Megabits per second.
Mbps . Million bits per second.
MBps . Megabytes per second.
medium access control (MAC) .
(1) For local area networks, the
method of determining which
device has access to the
transmission medium at any time.
(2) A technique used to establish
the sequence of data stations that are
in temporary control of the
transmission medium. (T)
MDI . Medium Dependent
Interface.
MDI port . The port that acts as the
electrical and mechanical interface
between the twisted-pair link
segment and the medium
attachment unit.
MDI-X . A port on a 10BASE-T
repeater that performs the crossover
function.
memory . Addressable storage
space in the computer that is used
for temporary storage of instructions
and data while a program is
running, or for permanent storage of
microcode. Contrast with auxiliary
storage.
menu . A list of options displayed
to the user by a data processing
system, from which the user can
select an action to be initiated. (T)
microprocessor . A processor whose
elements have been miniaturized
into one or a few integrated circuits.
(T)
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Netfinity 3000 User's Handbook