单项选择题
A.chooses the least congested channel
B.uses the configured channel
C.sets all access points to the same channel
D.steps through each of the allowed channels
单项选择题 Toimplementtheoptionalphasezerowhenusingeap-fastforauthentication，whichofthefollowingparametersmustbesetontheciscosecureacs？（）
单项选择题 Awirelesscontrollercanresideinhowmanymobilitygroups？（）
单项选择题 On a cisco aironet 1230 series autonomous access point， the status led is solid red， and the ethernet and radio leds are both off. What does this indicate？（）