If you perform a port scan with a TCP ACK packet, what should an OPEN port return?

Posted by: Pdfprep Category: CEH-001 Tags: Certified Ethical Hacker (Practical), CEH-001 exam questions, CEH-001 practice exam Post Date: February 20, 2021

If you perform a port scan with a TCP ACK packet, what should an OPEN port return?
A . RST
B . No Reply
C . SYN/ACK
D . FIN

Answer: A

Explanation:

Open ports return RST to an ACK scan.