Whichthreestatementsaretrueaboutload－basedCallAdmissionControl?（）

A.grantsaVoWLANclient-initiatedcallbasedonthenumberofactiveclientsassociatedtotheaccesspoint
B.grantsaVoWLANclient-initiatedcallbasedonchannelbandwidthcapacity
C.usesthe802.11ispecification
D.uses802.11actionframes
E.requiresaWMM-enabledclient

【参考答案】

B, D, E