单项选择题
A.让students访问Internet
B.阻止students访问RA的命令提示符
C.阻止管理员访问RA的控制台
D.让administrators访问Internet
E.阻止students访问Internet
F.阻止students访问Admin的网络
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 在使用VLSM技术的网络中使用一个C类的IP地址，以下哪个子网掩码在点对点串行链路中是最不浪费地址空间的？（）
