多项选择题 When configuring a wlan controller for a voice application using cisco 7920 wireless ip phones. which two general control settings should you select？（）

单项选择题 You are installing a cisco 4402 series wireless lan controller. Which type of interface should you use on the controller’s distribution port？（）

单项选择题 By default，on the wlan controller for a voice application using cisco 7921 wireless ip phones. what is the percentage of rf bandwidth that can be dedicated to the phones？（）