如果允许来自子网172.30.16.0/24到172.30.31.0/24的分组通过路由器,则对应ACL语句应该是()
A.access-list 10 permit 172.30.16. 0 255.255. 0.0 B.access-list 10 permit 172.30.16. 0 0.0.2555.255 C.access-list 10 permit 172.30.16. 0 0.0.15.255 D.access-list 10 permit 172.30.16. 0? 255.255.240.0 172.30.00010000.0 172.30.00011111.0 255.255.240.0正确答案C