Network Know How Better Living through Chemistry How a Network Will Improve Your Life connect the computers and allow them to share Metcalfes Law. Every network has the following elements in common Two or more objects, or nodes, that use the network to connect them A set of communication channels that carry somethingspeech, TV shows, computer data between or among nodes elements in common: A set of rules that controls network traffic every network has a maximum carrying capacity every node on a network has a name Sneakernet Data Networks and What You Can Do with Them input/output ports or I/O ports File Sharing The files and folders Sharing an Internet Connection A gateway router provides a connection between a local area network and the Internet Share Share Share Instant Messages Sharing Printers and Other Hardware Home Entertainment Video Cameras and Home Security Devices Home Automation Types of Network Connections Every computer connected to a network must follow a set of rules ASCII is fine for text Packets and Headers A data packet NOTE Error Checking Handshaking and Overhead Ethernet Legacy Systems & Other Alternative Wiring Methods Wi-Fi Powerline Networks Notes DTE and DCE Equipment LAN and Point-to-Point Networks Notes Ad Hoc Wi-Fi Infrared FireWire (IEEE 1394) Connections Through a Telephone Line Remote Terminals Clients and Servers Print Servers Hubs, Switches, and Routers Connect any pair of nodes Token Ring Star Mesh Hubs and Switches Switches LANs and WANs Bridges and Routers