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？（）

单项选择题 A Cisco WCS version 4.0 has been installed on a server with a dual Pentium 3.0 GHz processor， 4GB RAM， and an 80 GB hard drive. A location appliance has been incorporated into the network andis being monitored by the Cisco WCS. There are 3000 devices to be tracked but not all of them are beingtracked on the Cisco WCS. What can be done to correct the problem？（）