A typical broadband cable account (Web site layout) moves data at
A typical broadband cable account moves data at about 750-1,000 Kbps. Sowait times are brief. What might take several minutes to accomplish with adial-up account takes only a few seconds with a broadband account. Clients and ServersMost of the computers on the Internet at any given time are clients. That is, they are consumers of what the Internet has to offer. Your computer is mostdefinitely a client. Other computers on the Internet are servers. Servers provide the services thatclients are using. Nobody sits at a server and does work. Rather, the serverjust sits online and answers requests coming from clients. For example, a Webserveris a computer that holds a Web site people visit. All day and night, theWeb server sends its Web pages to whoever happens to request those pages. That s the Web server s only job. Online and OfflineThe term onlinemeans connected to the Internet and ready to use its services. The term offlinemeans not connected to the Internet. (That is, the cable con- necting your modem to your ISP is not active at the moment.) When you reonline, you have access to remote resourcesand local resources. When you reoffline, you have access to local resources only. A resourceis anything useful. Remote resourcesare things that are not on yourcomputer, but instead are on other computers. You need to be online to accessremote resources. Local resources are things that are in your own computer, such as your hard disk, floppy disk, CD drive, and all your files. You haveaccess to local resources any time your computer is turned on. You don t haveto be online to access local resources. With a dial-up account, you have to make some small effort to get online. I can tsay exactly what that effort will be, because it depends on your ISP. But thetypical scenario is that you open some program, and the modem starts to howland make weird noises. Then you type your user name and password, whichidentify who you are and verify that you really are that person, because pre- sumably you re the only person in the world who knows that password. Once you re online, you can use the Internet (for example, do e-mail, browse theWeb). To go offline, you might have to close the program you initially started. Or you may be able to right-click the little connectoid icon in the notificationarea (if available) and choose Disconnect. At that point, you re offline and canno longer use the Internet. With a broadband account, there s no such logging in and out. If the computeris on, and the modem is on, you re online. If the computer is off, or the modemis off, you re offline. No dialing, no weird phone noises, no signing in. Contraryto popular belief, this is not a bad thing. It s a good thing, and we ll talk aboutwhy it s not dangerous to be online all the time in Chapter 13.
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