1. CSCE101 – Chapter 6, 2006 Thursday, November 21, 2006

2. 6.2 Networks Network Characteristics: 1.Size 2.Interrelationships 3.Level of security 4.Topology (Arrangements) 5.Components 6.Connections

3. 6.2 Networks (Continued) 1.Size –WAN –MAN –LAN –HAN –PAN

4. 6.2 Networks (Continued) 2. Interrelationships –Client-Server –Peer-to-peer –Cluster

5. 6.2 Networks (Continued) 3. Level of security –Intranet –Extranet –VPN

6. 6.2 Networks (Continued) 4. Topology –Bus –Ring –Star

7. 6.2 Networks (Continued) 5. Components –Hosts/Nodes –Hubs –Switches –Bridges –Gateways –Routers

8. 6.3 Wired Communications 6. Connections –Backbones –Wired Twisted-pair Coaxial cable Fiber-optic

9. 6.4 Wireless Communications 6. Connections –Infrared –Broadcast radio Short-range - WiFi Long-range - WiMax –Microwave radio Short-range - Bluetooth Long-range - GPS

10. More on Connectivity… Electromagnetic spectrum Carrier waves Hertz, bps Line of Sight