<P> Each BSS is uniquely identified by a basic service set identifier (BSSID). </P> <P> For a BSS operating in infrastructure mode, the BSSID is the MAC address of the wireless access point (WAP) generated by combining the 24 bit Organization Unique Identifier (OUI, the manufacturer's identity) and the manufacturer's assigned 24 - bit identifier for the radio chipset in the WAP . The BSSID is the formal name of the BSS and is always associated with only one BSS . Note, the MAC address concept is not limited to radio communication; wired networks use the very same 24 + 24 bit MAC address concept to uniquely identify the hosts . </P> <P> The SSID is the informal (human) name of the BSS (just like a Windows Workgroup name). A BSS is functionally a contention domain as a local or workgroup network is functionally a broadcast domain . </P> <P> A BSSID with a value of all 1s is used to indicate the wildcard BSSID, usable only during probe requests or for communications that take place outside the context of a BSS . </P>

What are the only three topologies defined by the 802.11 standard