单选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 198permit icmp 166.129.130.0 255.255.255.0 anyaccess-list 198 deny icmp any any
access-list 1 98 permit ip any any
B、 access-list 198 permit icrnp 166.129.130.0 0.0.0 255 anyaccess-list 198 deny icmp any any
access-list 198 permit ip any any
C、 access-list 99 permit icrnp 166.129.130.0 0.0.0 255 any
access-list 9 9 deny icrnp any any
access-list 99 permit ip any any
D、 access-list 100 permit icrnp 166.129.130.0 0.0.0 255 any
access-list 100 permit ip any any
access-list 1 00 deny icmp any any

【正确答案】 C

【答案解析】[解析] 标准访问控制列表标号为1～100，100以上为扩展控制列表，排除A，B，而D先执行access-list 100 permit ip any any，那么所有的IP地址都不封禁，后面的将不执行，D项错误，选C项。