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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 icmp 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
热度🔥257
参考答案:B
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