An engineer must configure an 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 tcp any any eq 21 established
C) access-list 110 permit tcp any any eq 21 established
D) access-list 10 permit ip any any eq 21 tcp-ack

Question

Quizplus · Accepted Answer

The "established" keyword in an ACL entry is used to permit TCP packets that have the ACK or RST bits set, indicating an established connection.

An Engineer Must Configure an ACL That Permits Packets Which