单项选择题 Whichsetofrfcharacteristicsisdirectlymonitoredbythecorefeaturesetproducts？（）

单项选择题 Static wep is configured on the access point. you are authenticated and associated to the access point but are unable to obtain an ip address. Which of the following will cause this problem？（）

单项选择题 An reap was supporting 16 wlans， but now it only supports one. What happened to cause the change？（）