Which TCP flag(s) must be set in a packet in order for the packet to match an ACL entry that contains the established keyword?

Which TCP flag(s) must be set in a packet in order for the packet to match an ACL entry that contains the established keyword?
A . SYN only
B . ACK only
C . RST only
D . SYN or ACK
E . ACK or RST

View Answer

Answer: E