单项选择题 HowmanyRADIUSserverscanbeaddedtoacontrollerandthereafterassignedtotheauthenticationoraccountingofindividualWLANIDs？（）

单项选择题 You are installing a Cisco 4402 Series Wireless LAN Controller. Which type of interface should you use onthe controller’s distribution port？（）

单项选择题 You are troubleshooting a problem with a Cisco 7920 wireless IP phone on a standalone WLAN.The phone rings but， when you answer， the call is dropped. What may have caused this problem？（）