Technology

• Is the Internet different from telephone networks?
• What is circuit-switching?
• How is packet-switching technology different from circuit-switching?
• How are packets routed to their destination?
• What is the physical technology of the Internet?
• What does ``speed'' mean?
• Why do data networks use packet-switching?
• What are ATM and cell-switching technologies?
• What changes are likely in network technology?
• When will the ``information superhighway'' arrive?