Ann, a systems engineer, is working to identify an unknown node on the corporate network. To
begin her investigative work, she runs the following nmap command string:
user@hostname:~$ sudo nmap –O 192.168.1.54
Based on the output, nmap is unable to identify the OS running on the node, but the following
ports are open on the device:
TCP/22
TCP/111
TCP/512-514
TCP/2049
TCP/32778
Based on this information, which of the following operating systems is MOST likely running on the

unknown node?

A.
Linux

B.
Windows

C.
Solaris

D.
OSX