A、 In ad hoc mode, the Independent Basic Service Set (IBSS) is a framework in which mobile  clients connect directly without an intermediate access point. B、 In Infrastructure mode, the Basic Service Set (BSS) is a framework in which mobile clients use  a single access point for connecting to each other or to wired network resources. C、 In Infrastructure mode, the Extended Services Set (ESS) is a framework in which two or more  Basic Service Sets are connected by a common distribution system (DS). D、 In Infrastructure mode, the Independent Basic Service Setet (IBSS) is a framework in which  mobile clients connect directly without an intermediate access point. E、 In ad hoc mode, the Basic Service Set (BSS) is a framework in which mobile clients use a  single AP for connecting to each other or to wired network resources. F、 In ad hoc mode, the Extended Services Set (ESS) is a framework in which two or more Basic  Service Sets are connected by a common distribution system (DS)