Learn all about Ethernet LANs and network switching.

Ethernet LANs are a large part of modern computer networks. They operate at layer 1 and 2 of the OSI model or layer 1 of the TCP/IP model. Virtual LANs allow us to build complex topologies for larger organisations - keeping different groups of devices logically separate.


Learn what network switches do in a TCP/IP network and how they work.
Collision and broadcast domains are important properties of an Ethernet network.
VLANs are used in modern computer networks to support logically separate LANs on a single device.
Wide Area Networks may use one of several layer 2 technologies to encapsulate data as it cross a service providers network between a customer’s sites.