Apple AirPort Networks Guide de dépannage télécharger pdf (Page 17)

Learn Wireless Basics

Let’s quickly run through some basics to set the stage for what follows.

Adapters and Access Points

Wi-Fi networks need two connected parts: a wireless adapter and

an access point. The wireless adapter is part of a computing device

(such as a desktop computer, tablet, or smartphone), while the access

point connects both to wireless adapters and to a broader network,

such as the Internet via a broadband modem. An access point that’s

coupled with a router is called a wireless gateway; Apple calls its

wireless gateway a base station.

Apple’s lineup of base stations includes the AirPort Extreme, the

AirPort Express, and the Time

Capsule. When I talk about “AirPort

equipment,” I mean all Apple base stations, including Time Capsules.

An AirPort network is a Wi-Fi network with some Apple extras that

may work only with Apple software—under Mac OS X

or Windows—

or in conjunction with other AirPort equipment. Examples of such

features include streaming audio, certain forms of hard-drive file

sharing, and base-station-to-base-station connections.

What’s Wi-Fi?

The name Wi-Fi is a certification guarantee for which the Wi-Fi

Alliance trade group owns the rights and controls the testing. Wi-Fi

doesn’t stand for anything—it’s a made-up name—but it loosely

connotes wireless fidelity, in the sense of faithfulness: devices with

Wi-Fi stamped on them work with other Wi-Fi devices following the

same standards, or are faithful to one another.

The wireless adapter uses client software on the device to connect to

a specific base station (or set of affiliated base stations) after a user

selects the network name from a list or manually enters the network

name. (For example, in Mac OS X you can choose a network from the

Click here to buy the full 196-page “Take Control of Your Apple Wi-Fi Network” for only $20!

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Apple AirPort Networks Guide de dépannage Page 17