Sean, I am a little confused. So for Ports 137, 138 and 139 SMB/NetBIOS I presume they are TCP since NetBIOS is used as a mechanism to enable TCP, however in some of the explanations I've read, UDP is mentioned especially for Port 137 and 138. So any idea, particularly for purposes of the CompTIA exam, ambiguity notwithstanding, what the correct answer is? Similarly I read that SLP (Port 427) is normally UDP but that longer messages are sent in TCP - so does that means we should answer UDP? Lastly the information I read about RDP Port 3389 refers to both TCP and UDP saying that the software listens for both protocols. So again, what would be the correct answer if we are asked to choose one? Thanks, Newell
