試題詳解

22 定义一个用于封禁ICMP协议而只允许转发166.129.130.0/24子网的ICMP数据包的访问控制列表，Cisco路由器的正确配置是
(A)access-list 198 permit icmp 166.129.130.0 255.255.255.0 any 　　access-list 198 deny icmp any any 　　access-list 198 permit ip any any
(B)access-list 198 permit icmp 166.129.130.0 0.0.0.255 any 　　access-list 198 deny icmp any any 　　access-list 198 permit ip any any
(C) access-list 99 permit icmp 166.129.130:0 0.0.0.255 any 　　access-list 99 deny icnip any any 　　access-list 99 permit ip any any
(D)access-list 100 permit icmp 166.129.130.0 0.0.0.255 any 　　access-list 100 permit ip any any 　　access-list 100 deny icmp any any