单项选择题
A.Platinum
B.Gold
C.Silver
D.Bronze
单项选择题 WhenusingsimultaneousvoiceandmulticastonasingleWLANandRFband,whatisthe recommendedDTIMvalueoftheWLANforVoWLANdevices?（）
单项选择题 WhatistheWMMuserpriorityofthepacketsgoingdownstreamtotheclientwhentheclientdoesnot supportTSPECbuttheCiscoWLChasACMenabledandWLANpriorityissettoPlatinum?（）
多项选择题 Whichthreeareinterframespacesdefinedin802.11?（）