A、ip access-list standard cisco deny 172.16.192.0 0.0.31.255
B、ip access-list standard cisco deny 172.16.0.0 0.0.255.255
C、ip access-list standard cisco deny 172.16.172.0 0.0.31.255
D、ip access-list standard cisco deny 172.16.188.0 0.0.15.255
E、ip access-list standard cisco deny 172.16.192.0 0.0.15.255

A、ip access-list standard cisco deny 192.168.160.0 255.255.240.0
B、ip access-list standard cisco deny 192.168.160.0 0.0.191.255
C、ip access-list standard cisco deny 192.168.160.0 0.0.31.255
D、ip access-list standard cisco deny 192.168.0.0 0.0.31.255

A、ip access-list extended cisco permit tcp any 196.15.7.0 0.0.0.255 eq www
B、ip access-list extended cisco deny tcp any 196.15.7.0 eq www
C、ip access-list extended cisco permit 196.15.7.0 0.0.0.255 eq www
D、ip access-list extended cisco permit ip any 196.15.7.0 0.0.0.255
E、ip access-list extended cisco permit www 196.15.7.0 0.0.0.255

A、ip access-list standard cisco permit smtp host 1.1.1.1
B、ip access-list extended cisco permit ip smtp host 1.1.1.1
C、ip access-list standard cisco permit tcp any host 1.1.1.1 eq smtp
D、ip access-list extended cisco permit tcp any host 1.1.1.1 eq smtp

A、静态NAT
B、动态NAT
C、PAT
D、NAT地址池

A、静态NAT
B、动态NAT
C、PAT
D、NAT地址池

A、转换引入路径延迟
B、节约合法IP地址
C、丧失端到端跟踪性
D、增加连接到网络的灵活性
E、部分功能不能实现

A、向网络服务商再申请更多的internet合法地址
B、为局域网中所有机器只配置8个地址
C、配置时使用overload命令选项
D、配置时使用rotary命令选项

A、内部本地
B、外部本地
C、内部全局
D、外部全局

A、ip nat inside source static 61.51.3.104 10.83.91.2
B、ip nat inside
C、ip nat outside
D、access-list 1 permit 10.83.91.0 0.0.1.255

A、ip nat inside
B、ip nat outside
C、ip outside global
D、ip inside local