单项选择题
A.its ip address already exists.
B.it is operating normally.
C.it requires a code upgrade.
D.it has lost contact with the controller.
多项选择题 Whichthreeoftheseusergroupsareavailableonciscowcsversion4.0？（）
单项选择题 Clients using cisco-leap and eap-fast authentication are having no problems logging on to The wireless network， but clients using peap are failing to log on. Which situation would result in this type of problem？（）
单项选择题 Youareconfiguringawirelesslancontrollerforqos.which802.11euserprioritytagshouldyouapplytovoiceapplications？（）