Ann, a technician, is attempting to establish a remote terminal session to an end user’s computer using
Kerberos authentication, but she cannot connect to the destination machine. Which of the following default
ports should Ann ensure is open?

A.
22
B.
139
C.
443
D.
3389
Explanation:
Remote Desktop Protocol (RDP) uses TCP port 3389.
3389 is specific to remote desktop.. why would that be the answer if Ann is trying to establish a remote terminal session?
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