Infrastructure and technicals thumb|A conceptual diagram of a LAN at a small business office; this example includes two rooms, each with a switch, as well as a file server, and a mix of wired and wireless connections. This is the star topology. Simple LANs in office or school buildings generally consist of cabling and one or more network switches; a switch is used to allow devices on a LAN to talk to one another via Ethernet. A switch can be connected to a router, cable modem, or ADSL modem for Internet access. LANs at residential homes usually tend to have a single router and often may include a wireless repeater. A LAN can include a wide variety of other network devices such as firewalls, load balancers, and network intrusion detection. A wireless access point is required for connecting wireless devices to a network; when a router includes this device, it is referred to as a wireless router.
Infrastructure and t,echnicals thumb|A conceptual diagram of a LAN at a small business office; this example includes two rooms, each with a switch, as well as a file server, and a mix of wired and wireless connections. This is the star topology Simple LANs in office or school buildings generally consist of cabling and one or more network switches; a switch is used to allow devices on a LAN to talk to one another via Ethernet. A switch can be connected to a router, cable modem or ADSL modem for ,Internet access. LANs at residential homes usually tend to have a single router and often may include a wireless repeater. A LAN can include a wide variety of other network devices such as firewall.s load balancers, and network intrusion detection. A wireless access point is required for connecting wireless devices to a network; when a router includes this device, it is referred to as a wireless router.