单项选择题
A.lost connection to the controller
B.duplicate ip address
C.startup
D.site survey mode
单项选择题 Onthewlse，whichofthefollowingtasksmustbecompletedbeforeinterferencedetectioncanbeenabled？（）
单项选择题 Tokeepperformanceoptimalonalightweightaccesspoint，whatcanbedone？（）
多项选择题 Whensettinganaccesspointtoanon-rootrole，whattwoparameters，otherthanroleintheradionetwork，mustbeconfiguredonthessidmanagerpage？（）