单项选择题 Clients using Cisco-LEAP and EAP-FAST authentication are having no problems logging on to the wirelessnetwork， but clients using PEAP are failing to log on. Which situation would result in this type of problem？（）

单项选择题 You review the Failed Attempts logs on an AAA server and find： "unknown network access server error." Which failure could produce this error？（）

单项选择题 On a Cisco Aironet 802.11 a/b/g wireless LAN client adapter， the status LED and activity LED arealternating on and off. What does this indicate？（）