单项选择题
A.duplicate ip address
B.code upgrade in progress
C.normal operation
D.searching for primary controller
单项选择题 Whenconfiguringqosonawirelesscontroller，theper-user，real-timebandwidthcontractisenforcedforwhichofthefollowingprotocols？（）
单项选择题 Howmanyradiusserverscanbeaddedtoacontrollerandthereafterassignedtotheauthenticationoraccountingofindividualwlanids？（）
单项选择题 Whenconfiguringciscosecureacstosupportwirelesseapauthentication，whichdevicemustbeconfiguredasaaaaclient？（）