3. How Traffic Moves over the Internet A growing number of home users get their Internet access from their local cable TV company using cable modem service. The cable provider acts as its own ISP, and maintains high-speed connection to an Internet backbone.

4. How Traffic Moves over the Internet Many private businesses are connected to the Internet, often using business-class services from an ISP. These users are typically connected using a medium-speed data circuit leased from the local phone company.

5. How Traffic Moves over the Internet Some of us just can't live a plugged-in life anymore. Several wireless ISPs provide wireless Internet access using wireless PDA devices such as the Plam Vll.

6. How Traffic Moves over the Internet The Internet would't be very interesting without content, and most of that content comes from Web servers. ISPs often provide free hosting services for their users, and many business host their own Web sites. But organizations with heavy Web server traffic often outsource their Web services to a dedicated Web-hosting provider. These providers use heavy-duty server PCs connected to very high-speed data connections to provide a very high level of service and reliability.