多项选择题
A.Administratively shut down the interface.
B.Physically secure the interface.
C.Create an access list and apply it to the virtual terminal interfaces with the access-group command.
D.Configure a virtual terminal password and login process.
E.Enter an access list and apply it to the virtual terminal interfaces using the access-class command.
单项选择题 在IEEE802.11b无线局域网规范中，指定的最高数据速率是？（）
多项选择题 图中所示网络运行RIPV2路由选择协议，全网收敛并且所有的路由器运行正常。现在R1的FastEthernet0/0端口，不能正常工作了，则网段内的路由器会作出怎样的回应？（）
单项选择题 A network administrator receives an error message while tring to configure the Ethernet interface of a router with IP address 10.24.24.24/29.which statement explains the reason for this issue?（）