Which entry must be included in the ACL?

An engineer must configure a ACL that permits packets which include an ACK in the TCP header.

Which entry must be included in the ACL?
A . access-list 110 permit tcp any any eq 21 tcp-ack
B . access-list 10 permit ip any any eq 21 tcp-ack
C . access-list 10 permit tcp any any eq 21 established
D . access-list 110 permit tcp any any eq 21 established

View Answer

Answer: D