单项选择题 In a deployment using standalone access points， clients set up to authenticate with EAP-PEAP or EAP-Cisco Wireless （Cisco-LEAP） cannot authenticate. When you inspect the Failed Attempts report on theCisco Secure ACS， you find this error： "Unknown network access server NAS."  Which problem may havecaused this failure？（）

单项选择题 You are configuring a wireless LAN controller for QoS. Which 802.11e user priority tag should you apply tovoice applications？（）

单项选择题 WhichprotocoldoestheRADIUSserveruseinsidethesecuretunnelofEAP-FASTtoauthenticatethe clientwhenone-timepasswordsareinuse？（）