From Serebra Learning Corporation
Components Used to Build Networks 
This
WestNet e-Learning module introduces internetworking devices, such as repeaters, hubs, switches, bridges, routers, and gateways as the connectors between the individual segments of a broadcast network that has been broken down into separate segments.
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LAN Protocols 
This
WestNet e-Learning module reviews the fundamental prinicples of network data flow and
Ethernet networks from older coax-based systems to the newest fiber-based
Gigabit networks. We will also examine the concepts of collision domains and traffic isolation.
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