NETWORK+ Terms M's

Question 1

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.

Answer 1

MAC (Media Access Control)

address

Question 2

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.

Answer 2

MAC layer

Question 3

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
managed using

Answer 3

Mac OS X

Question 4

A network that spans a defined geographic
location, such as a city or
suburb.

Answer 4

MAN (metropolitan area network)

Question 5

The supplying
name server that has authority
in a DNS zone.

Answer 5

master name server

Question 6

1 million bits. Used

to rate transmission transfer speeds

Answer 6

Mb (megabit)

Question 7

1 million bytes.

Usually refers to file size.

Answer 7

MB (megabyte)

Question 8

How
many millions of bits can travel
across a given medium in a second.

Answer 8

Mbps (megabits per second)

Question 9

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.

Answer 9

MDF

Question 10

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.

Answer 10

MDI (medium-dependent interface)

Question 11

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
computers.

Answer 11

MDI-X (medium-dependent interface

crossed)

Question 12

Network media
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.

Answer 12

media converter

Question 13

Defines a range of
software or hardware tools designed
to test a particular media type.

Answer 13

media tester

Question 14

The label
assigned to define the location in
memory where information is
stored.

Answer 14

memory address

Question 15

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.

Answer 15

mesh

Question 16

A value that can be
assigned to a route to encourage or
discourage the use of the route. See
also cost.

Answer 16

metric

Question 17

A data set that defines the
criteria that can be retrieved and set
on a device using SNMP.

Answer 17

MIB (Management Information

Base)

Question 18

The process
of using switches to divide a network
into smaller segments

Answer 18

microsegmentation

Question 19

A wireless technology
sometimes used to transmit data
between buildings and across vast
distances.

Answer 19

microwaves

Question 20

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.

Answer 20

mirroring

Question 21

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.

Answer 21

MMF (Multimode Fiber)

Question 22

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
telephone network.

Answer 22

modem (modulator-demodulator)

Question 23

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.

Answer 23

MPLS (Multiprotocol Label

Switching)

Question 24

A
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.
Sometimes

Answer 24

MSAU (multistation access unit)

Question 25

A media connector

used with fiber-optic cabling.

Answer 25

MT-RJ connector

Question 26

A single-packet transmission
from one sender to a specific
group of destination nodes.

Answer 26

multicast

Question 27

A term used to refer
to a device that has more than one
network interface.

Answer 27

multihomed

Question 28

A tool used to measure

voltage, current and resistance.

Answer 28

multimeter

Question 29

A term used to refer
to a programming language, technology,
or protocol that runs on different
types of CPUs or operating
systems.

Answer 29

multiplatform

Question 30

A technique of combining
multiple channels over a
transmission path and then recovering
or demultiplexing the separate
channels at the receiving end.
Examples include FDM, TDM,
CDM, and WDM.

Answer 30

multiplexing