Linksys PCMLM56 Manuel d'utilisateur télécharger pdf (Page 26)

Port - A pathway into and out of the computer or a network device such as a

switch or router. For example, the serial and parallel ports on a personal com-

puter are external sockets for plugging in communications lines, modems and

printers.

RJ-45 (Registered Jack-45) - A connector similar to a telephone connector that

holds up to eight wires, used for connecting Ethernet devices.

Router - Protocol-dependent device that connects subnetworks together.

Routers are useful in breaking down a very large network into smaller subnet-

works; they introduce longer delays and typically have much lower throughput

rates than bridges.

Server - Any computer whose function in a network is to provide user access

to files, printing, communications, and other services.

Software - Instructions for the computer. A series of instructions that performs

a particular task is called a "program." The two major categories of software are

"system software" and "application software." System software is made up of

control programs such as the operating system and database management sys-

tem (DBMS). Application software is any program that processes data for the

user.

A common misconception is that software is data. It is not. Software tells the

hardware how to process the data.

STP (Shielded Twisted Pair) - Telephone wire that is wrapped in a metal sheath

to eliminate external interference.

Switch - 1. A data switch connects computing devices to host computers,

allowing a large number of devices to share a limited number of ports. 2. A

device for making, breaking, or changing the connections in an electrical cir-

cuit.

TCP/IP - Transmission Control Protocol/Internet Protocol (TCP/IP) is the

basic communication language or protocol of the Internet. It can also be used

as a communications protocol in a private network (either an intranet or an

extranet). When you are set up with direct access to the Internet, your comput-

er is provided with a copy of the TCP/IP program just as every other computer

that you may send messages to or get information from also has a copy of

TCP/IP.

Throughput - The amount of data moved successfully from one place to anoth-

er in a given time period.

EtherFast

10/100 Compact USB Network Adapter

Mbps (MegaBits Per Second) - One million bits per second; unit of measure-

ment for data transmission.

Motherboard - A motherboard is the physical arrangement in a computer that

contains the computer's basic circuitry and components.

NetBEUI (NetBIOS Extended User Interface) - The transport layer for

NetBIOS. NetBIOS and NetBEUI were originally part of a single protocol

suite that was later separated. NetBIOS sessions can be transported over

NetBEUI, TCP/IP and SPX/IPX protocols.

NetBIOS - The native networking protocol in DOS and Windows networks.

Although originally combined with its transport layer protocol (NetBEUI),

NetBIOS today provides a programming interface for applications at the ses-

sion layer (layer 5). NetBIOS can ride over NetBEUI, its native transport,

which is not routable, or over TCP/IP and IPX/SPX, which are routable proto-

cols.

NetBIOS computers are identified by a unique 15-character name, and

Windows machines (NetBIOS machines) periodically broadcast their names

over the network so that Network Neighborhood can catalog them. For TCP/IP

networks, NetBIOS names are turned into IP addresses via manual configura-

tion in an LMHOSTS file or a WINS server.

There are two NetBIOS modes. The Datagram mode is the fastest mode, but

does not guarantee delivery. It uses a self-contained packet with send and

receive name, usually limited to 512 bytes. If the recipient device is not listen-

ing for messages, the datagram is lost. The Session mode establishes a connec-

tion until broken. It guarantees delivery of messages up to 64KB long.

Network - A system that transmits any combination of voice, video and/or data

between users.

Notebook (PC) - A notebook computer is a battery-powered personal comput-

er generally smaller than a briefcase that can easily be transported and conve-

niently used in temporary spaces such as on airplanes, in libraries, temporary

offices, and at meetings. A notebook computer, sometimes called a laptop com-

puter, typically weighs less than five pounds and is three inches or less in thick-

ness.

Packet - A unit of data routed between an origin and a destination in a network.

Plug-and-Play - The ability of a computer system to configure expansion

boards and other devices automatically without requiring the user to turn off

the system during installation.

Instant EtherFast

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Linksys PCMLM56 Manuel d'utilisateur Page 26

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