A.ip route-static 129.1.0.016 serial 0
B.ip route-static 10.0.0.216129.1.0.0
C.ip route-static 129.1.0.01610.0.0.2
D.ip route-static 129.1.0.0255.255.0.010.0.0.2

A.It has the same maximum hop count as version 1
B.It uses broadcasts for its routing updates
C.It is a classless routing protocol
D.It has a lower default administrative distance than RIP version 1
E.It supports authentication
F.It does not send the subnet mask in updates

A.network all
B.neighbor
C.enable
D.network 10.0.0.0

A.节省网络带宽
B.防止网络中形成路由环路
C.将路由不可达信息在全网扩散
D.通知邻居路由器哪些路由是从其他处得到

A.段
B.包
C.位
D.帧

A.网络层
B.传输层
C.会话层
D.表示层
E.应用层

A.LLC
B.MAC
C.BIG MAC

A.Allow unrestricted access to the console or VTY ports
B.Use a firewall to restrict access from the outside to the network devices
C.Always use Telnet to access the device command line because its data is automatically encrypted
D.Use SSH or another encrypted and authenticated transport to access device configurations
E.Prevent the loss of passwords by disabling password encryption

A.23
B.48
C.53
D.69

A.网络层
B.传输层
C.会话层
D.表示层

A.HUB可以用来构建局域网
B.一般HUB都具有路由功能
C.HUB通常也叫集线器，一般可以作为地址翻译设备（NAT）
D.一台共享式以太网HUB下的所有PC属于同一个冲突域