单项选择题 A network administrator is troubleshooing an EIGRP problem on a router and needs to confirm the IP addresses of the devices with which the router has established adjacency. The retransmit interval and the queue counts for the adjacent routers also need to be checked. What command will display the required information?（）

单项选择题 What is one reason that WPA encryption is preferred over WEP?（）

单项选择题 Which additional configuration step is necessary in order to connect to an access point that has SSID broadcasting disabled?（）