Lets shift now to network configurations. The most common type of WLAN network is the WLAN Infrastructure mode network. This consists of an access point and stations. Stations are Wi-Fi enabled devices like tablet PCs, laptops, or smartphones, just to name a few examples. Networks are created in order to allow stations to communicate with each other or to connect to the Internet. Access points serve as the main hub in a network, routing all communications and providing a bridge between a wireless and a wired network. In order to identify an access point, it is given a service set identifier - or SSID. This becomes the network name that all stations will use. Access points send out a signal called a beacon that alerts stations that there is an access point nearby. A station must first associate with an access point to join the network and then it will listen for beacons to see if any traffic is available. Stations can also save system power by going to sleep in between beacons and waking up in time for the next one.