An Ethernet switch creates networks and uses multiple ports to communicate between devices in the LAN. Ethernet switches differ from routers, which connect networks and use only a single LAN and WAN port. A full wired and wireless corporate infrastructure provides wired connectivity and Wi-Fi for wireless connectivity.
Hubs are similar to Ethernet switches in that connected devices on the LAN will be wired to them, using multiple ports. The big difference is that hubs share bandwidth equally among ports, while Ethernet switches can devote more bandwidth to certain ports without degrading network performance. When many devices are active on a network, Ethernet switching provides more robust performance.
Routers connect networks to other networks, most commonly connecting LANs to wide area networks (WANs). Routers are usually placed at the gateway between networks and route data packets along the network.