问题 单项选择题

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

答案

参考答案:B

单项选择题
单项选择题