单项选择题
You have finished physically installing an access point on the ceiling at your officE.At a minimum, which paramenter must be configured on the access point in order to allow a wireless client to operate on it?（）
A.AES B.PSK C.SSID D.TKIP E.WEP
单项选择题 At which OSI layer is a logical path created between two host systems（）。
多项选择题 根据下图，网络连接到路由器R2被汇总为一条192.168.176.0/21的路由，并发给R1。哪两个数据包目的地址R1会转发给R2？（）
单项选择题 What is the effect of using the service password-encryption comma（）。
