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CEH Certified Ethical Hacker Practice Exams by Matt Walker

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  1.  What is the second step in the TCP three-way handshake?
A.  SYN
B.  ACK
C.  SYN/ACK
D.  ACK-SYN
E.  FIN
image  C. Admittedly, this is an easy one, but I’d bet dollars to doughnuts you see it in some form on your exam. It’s such an important part of scanning and enumeration because, without understanding this basic principle of communication channel setup, you’re almost doomed to failure. A three-way TCP handshake has the originator forward a SYN. The recipient, in step 2, sends a SYN and an ACK. In step 3, the originator responds with an ...

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