单项选择题
A.access-list 50 deny 192.168.1.1 0.0.0.255 B.access-list 110 permit ip any any C.access-list 2500 deny tcp any host 192.168.1.1 eq 22 D.access-list 101 deny tcp any host 192.168.1.1
A.you can apply multiple access lists with the same protocol or in different direction. B.you can config one access list,per direction,per layer 3 protocol C.you can place as many access lists as you want on any interface D.you can apply only one access list on any interface
A.They are always present in the NAT table. B.They allow connection to be initiated from the outside. C.They can be configured with access lists, to allow two or more connections to be initiated from the outside. D.They require no inside or outside interface markings because addresses are statically defined.