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CompTIA CNX-001 Exam - Topic 1 Question 16 Discussion

Actual exam question for CompTIA's CNX-001 exam
Question #: 16
Topic #: 1
[All CNX-001 Questions]

A network engineer is working on securing the environment in the screened subnet. Before penetration testing, the engineer would like to run a scan on the servers to identify the OS, application versions, and open ports. Which of the following commands should the engineer use to obtain the information?

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Suggested Answer: B

The -A flag enables aggressive scanning, which combines OS detection, version detection, script scanning, and traceroute to give you detailed information on hosts in the 10.10.10.0/28 range.


by Marge at Mar 30, 2026, 02:57 PM

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Dalene
18 days ago
I think A) is more for packet capturing, not scanning.
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Kristel
23 days ago
Definitely B) nmap -A for OS and version detection!
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Jacinta
1 month ago
I feel like hping3 is more for crafting packets rather than scanning, but I could be mixing it up with something else.
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Almeta
2 months ago
I practiced a similar question where nmap was the answer too. It seems like the go-to tool for this kind of task.
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Nan
2 months ago
I'm not entirely sure, but I remember something about using tcpdump for packet analysis, not for scanning.
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Cecilia
2 months ago
I think the nmap command is the best choice here since it can provide OS detection and version info.
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