NETWORK+ Terms M's Flashcards
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)
address
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.
MAC 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 managed using
Mac OS X
A network that spans a defined geographic
location, such as a city or
suburb.
MAN (metropolitan area network)
The supplying
name server that has authority
in a DNS zone.
master name server
1 million bits. Used
to rate transmission transfer speeds
Mb (megabit)
1 million bytes.
Usually refers to file size.
MB (megabyte)
How
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.
MDF
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 computers.
MDI-X (medium-dependent interface
crossed)
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.
media converter
Defines a range of
software or hardware tools designed
to test a particular media type.
media tester
The label
assigned to define the location in
memory where information is
stored.
memory address
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.
mesh
A value that can be
assigned to a route to encourage or
discourage the use of the route. See
also cost.
metric
A data set that defines the
criteria that can be retrieved and set
on a device using SNMP.
MIB (Management Information
Base)
The process
of using switches to divide a network
into smaller segments
microsegmentation
A wireless technology
sometimes used to transmit data
between buildings and across vast
distances.
microwaves
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.
mirroring
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 telephone network.
modem (modulator-demodulator)
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
Switching)
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
MSAU (multistation access unit)
A media connector
used with fiber-optic cabling.
MT-RJ connector
A single-packet transmission
from one sender to a specific
group of destination nodes.
multicast
A term used to refer
to a device that has more than one
network interface.
multihomed
A tool used to measure
voltage, current and resistance.
multimeter
A term used to refer to a programming language, technology, or protocol that runs on different types of CPUs or operating systems.
multiplatform
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.
multiplexing
