用扩展访问控制列表配置封禁ICMP协议，只允许168.27.95.0/24子网的IC
题型：单项选择题
问题：
用扩展访问控制列表配置封禁ICMP协议，只允许168.27.95.0/24子网的ICMP数据包通过路由器，正确的配置是______。
A．access-list 90 deny icmp 168.27.95.0 255.255.255.0 any access-list 90 deny icmp any any access-list 90 permit ip any any
B．access-list 100 permit icmp 168.27.95.0 0.0.0.255 any access-list 100 permit ip any any
C．access-list 110 permit icmp 168.27.95.0 255.255.255.0 any access-list 110 deny icmp any any
D．access-list 120 permit icmp 168.27.95.0 0.0.0.255 any access-list 120 deny icmp any any access-list 120 permit ip any any