问题
单项选择题
只封禁一台IP地址为203.168.47.59主机的access-list的正确配置是（）
A. access-list 110 permit ip any any
access-list 110 deny ip host 203.168.47.59 any
access-list 110 deny ip any host 203.168.47.59
B. access-list 110 deny ip host 203.168.47.59 any
access-list 110 deny ip any host 203.168.47.59
access-list 110 permit ip any any
C. access-list 110 deny ip host 203.168.47.59 any
access-list 110 deny ip any host 203.168.47.59
D. access-list 110 deny ip host 203.168.47.59 any
access-list 110 permit ip any any
access-list 110 deny ip any host 203.168.47.59
答案
参考答案：B