An Nmap scan shows the following open ports, and nmap also reports that the OS guessing results to match too many signatures hence it cannot reliably beidentified: 21 ftp 23 telnet 80 http 443https What does this suggest ?
A.
This is a Windows Domain Controller
B.
The host is not firewalled
C.
The host is not a Linux or Solaris system
D.
The host is not properly patched
Explanation:
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