单项选择题 Whichauthenticationtypesareallowedwiththeciscoaduwhenselectingwpa/wpa2/cckmunderthesecurityoptions？（）

单项选择题 You are using standalone cisco aironet 1400 series wireless bridges for a nine-mile point-to-point wireless link between two buildings. Which distance setting should you use for the bridge configured as the root？（）

单项选择题 When configuring a cisco 3845 integrated services router to support 802.11b and g clients. Which of the following commands would be correct？（）