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Q65 Single choice

Blane is a network security analyst for his company. From an outside IP, Blane performs an XMAS scan using Nmap. Almost every port scanned does not illicit a response.

What can he infer from this kind of response?

A
These ports are open because they do not illicit a response.
B
He can tell that these ports are in stealth mode.
C
If a port does not respond to an XMAS scan using NMAP,that port is closed.
D
The scan was not performed correctly using NMAP since all ports,no matter what their state,will illicit some sort of response from an XMAS scan.

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