Cisco路由器执行show access－list命令显示如下一组信息 Standard IP access list block deny 1

Cisco路由器执行show access-list命令显示如下一组信息 Standard IP access list block deny 10.0.0.0, wildcardbits 0.255.255.255 log deny 172.16.0.0, wildcard bits 0.15.255.255 permit any 根据上述信息，正确的access-list配置是

A．Router (config) #access-list standard block Router (config-std-nacl) #deny 10.0.0.0 255.0.0.0 log Router (config-std-nacl) #deny 172.16.0.0 255.240.0.0 Router (config-std-nacl) #permit any

B．Router (config) #ip access-list standard block Router (config-std-nacl) #permit any Router (config-std-nacl) #deny 10.0.0.0 0.255.255.255 log Router (config-std-nacl) #deny 172.16.0.0 0.15.255.255

C．Router (config) #ip access-list standard block Router (config-std-nacl) #deny 10.0.0.0 255.0.0.0 log Router (config-std-nacl) #deny 172.16.0.0 255.240.0.0 Router (config-std-nacl) #permit any

D．Router (config) #ip access-list standard block Router (config-std-nacl) #deny 10.0.0.0 0.255.255.255 log Router (config-std-nacl) #deny 172.16.0.0 0.15.255.255 Router (config-std-nacl) #permit any