Flashcards in NETWORK+ Terms M's Deck (30):
A six-octet number,
described in hexadecimal, that
uniquely identifies a host on a network.
It is a unique number burned
into the network interface.
MAC (Media Access Control)
In the OSI model, the
lower of the two sublayers of the
data link layer. It is defined by the
IEEE as being responsible for interaction
with the physical layer.
Version 10 of an operating
system designed for Macintosh
computer systems. Mac OS X represents
a complete shift in Apple
operating systems because it is based
on UNIX code and as such can be
Mac OS X
A network that spans a defined geographic
location, such as a city or
MAN (metropolitan area network)
name server that has authority
in a DNS zone.
master name server
1 million bits. Used
to rate transmission transfer speeds
1 million bytes.
Usually refers to file size.
many millions of bits can travel
across a given medium in a second.
Mbps (megabits per second)
The main distribution frame
is a type of wiring closet. The primary
wiring closet for a network
typically holds the majority of the
network gear, including routers,
switches, wiring, servers, and more.
This is also typically the wiring closet
where outside lines run into the
network. This main wiring closet is
known as the MDF. One of the key
components in the MDF is a primary
patch panel. The network connector
jacks attached to this patch
panel lead out to the building for
network connections. See also IDF.
A type of port found on Ethernet
networking devices such as hubs and
switches in which the wiring is
straight through. MDI ports are
sometimes called uplink ports. They
are intended for use as connectivity
points to other hubs and switches.
MDI (medium-dependent interface)
A type of port
found on Ethernet networking
devices in which the wiring is
crossed so that the transmit line of
one device becomes the receive line
of the other. MDI-X is used to connect
hubs and switches to client
MDI-X (medium-dependent interface
converters are used to interconnect
different types of cables within an
existing network. For example, the
media converter can be used to connect
newer Gigabit Ethernet technologies
with older 100BaseT networks.
Defines a range of
software or hardware tools designed
to test a particular media type.
assigned to define the location in
memory where information is
A type of network topology
in which each node connects to
every other node. The mesh network
provides a high level of redundancy
because it provides alternative
routes for data to travel should a
single route becomes unavailable.
A value that can be
assigned to a route to encourage or
discourage the use of the route. See
A data set that defines the
criteria that can be retrieved and set
on a device using SNMP.
MIB (Management Information
of using switches to divide a network
into smaller segments
A wireless technology
sometimes used to transmit data
between buildings and across vast
A fault-tolerant technique
in which an exact duplicate of
data on one volume is created on
another. Mirroring is defined as
RAID 1. See also RAID.
A type of
fiber in which many beams of light
travel through the cable, bouncing
off the cable walls. This strategy
actually weakens the signal, reducing
the length and speed at which the
data signal can travel. See also SMF.
MMF (Multimode Fiber)
A device used to modulate and
demodulate the signals that pass
through it. It converts the direct
current pulses of the serial digital
code from the controller into the
analog signals compatible with the
A technology designed
to speed up network traffic flow by
moving away from the use of traditional
routing tables. Instead of
routing tables, MPLS uses short
labels to direct packets and forward
them through the network.
MPLS (Multiprotocol Label
device used in an IBM Token-Ring
Network. It organizes the connected
nodes into an internal ring and uses
the RI and RO connectors to
expand to other MSAUs on the network.
MSAU (multistation access unit)
A media connector
used with fiber-optic cabling.
A single-packet transmission
from one sender to a specific
group of destination nodes.
A term used to refer
to a device that has more than one
A tool used to measure
voltage, current and resistance.
A term used to refer
to a programming language, technology,
or protocol that runs on different
types of CPUs or operating