单项选择题 You are troubleshooting a problem with a Cisco 7920 wireless IP phone that is causing the phoneto drop calls. The problem appears to be roaming bandwidth issue. In order to verify what kind ofissue it is， you decide to increase the bandwidth reserve for roaming on the WLAN controller tomaximum. What level do you set the bandwidth to？（）

单项选择题 You are charges with implementing a secure wireless installation which will provide Internet accessto client devices but will not allow communications between wireless clients. In addition to implementing PSPF or peer-to-peer blocking on the wireless side，which of the following actionsshould you perform on the wired infrastructure？（）

多项选择题 WhenconfiguringaWLANcontrollerforavoiceapplicationusingCisco7920wirelessIPphones，whichtwogeneralcontrolsettingsshouldyouselect？（）