题目内容:
Cisco路由器执行show access.1ist命令显示如下一组控制列表信息Standard IP access list 30
deny 127.0.0.0, wildcard bits 0.255. 255. 255
deny 172.16.0.0, wildcard bits 0.15. 255. 255
permit any
根据上述信息,正确的access-list:配置是( )。 A.Router(config)#access—list 30 deny l27.0.0.0 255.255.255.0
Router(config)#access-list 30 denY l72.16.0.0 255.240.0.0
Router(config)#access-list 30 permit any
B.Router(confi9—std-nacl)#access-list 30 deny l27.0.0.0 0.255.255.255
Router(confi9—std-nacl)#access—list 30 deny l72.16.0.0 0.15.255.255
Router(confi9—std—nacl)#access—list 30 permit any
C.Router(config)#access—list 30 deny l27.0.0.0 0.255.255.255
Router(config)#access—list 30 denY l72.16.0.0 0.15.255.255。
Router(config)#access—list 30 permit any
D.Router(config)#access—list 30 deny l27.0.0.0 0.255.255.255
Router(config)#access—list 30 permit any
Router(config)#access—list 30 deny l72.16.0.0 0.15.255.255
参考答案:
答案解析: