Week 3 - Ethernet and Switches

             This week, we reviewed information on network topology and Ethernet cables. 
    Ethernet coming in, whether fiber or twisted pair, typically goes to a modem or a switch. Most Ethernet networks within larger businesses run off a switch. The switch typically uses twisted-pair Cat6 with RJ-45 connectors and has multiple ports. A switch maintains a source address table to forward frames to the appropriate receiving device quickly.
    On larger networks, fiber is typically used for its speed and long-distance capabilities. However, there are different types of fiber utilized in networking. Multi-mode fiber is less expensive and is used for shorter runs up to ~300 meters, while single-mode fiber is used for longer distances up to 40 km.
    There is a vast array of wire and fiber choices. Be sure to research which wire is best for your application.