Switch: Act as a central connection point for network devices. They directly send and route information to the destination device and operate in full-duplex.
Routers: Used to transfer information between separate networks. They use a routing table to direct information to the correct network address.
Bridge: A device that connects two networks together using different formats. Examples include twisted pair to fiber optic and twisted pair to a wireless network.
Hubs: Simple devices used to connect multiple computers together. They lack the ability to route messages and operate in half-duplex modeAgain I urge you to do some research on your own about these until you have a good understanding about all the components. Good idea to ask your IT colleague to explain in plain terms.ThanksDon Armstrong, CBET, CHTM