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Any Questions?. Chapter 1. Introduction to Computer Networking Topics Quick overview of why we might want networks Introduction to ideas. Perspectives on Networks. How do we connect to networks Cable Modem Office LAN Connection is ready to go. Enterprise Networking.
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Chapter 1 • Introduction to Computer Networking Topics • Quick overview of why we might want networks • Introduction to ideas
Perspectives on Networks • How do we connect to networks • Cable Modem • Office LAN • Connection is ready to go
Enterprise Networking • Created by a company to let workers communicate
Small Office/Home Office (SOHO) Networking • Communicate with enterprise, or other web servers
Interconnected Networks • Most enterprise networks connect to an ISP • Most ISPs interconnect • The Internet
Flinstones Network • How do users share date before networks • Sneakernet • How can we interconnect computers • Two-wire Networking cards • Send Wire • Receive wire
Sharing Data • Send transmit from one PC to all PCs • Multi-port Repeater • Hub
Sharing Data • Now all PCs see all data • Need addressing so PC knows when to display information
Making it easy • Use names instead of number addresses
Summing Up • Ethernet cards in each computer • Cards have unique numeric addresses • Ethernet cables connect cards to hubs • Hubs repeat the data to other ports • Cabling is typically in a star configuration • Users use names, but the computer speaks in addresses