312-50V10 Question #334: Real Exam Question with Answer & Explanation

The correct answer is D: NMAP -O. The -O flag is the dedicated Nmap switch for TCP/IP stack fingerprinting to identify the target's operating system.

Question

Which of the following parameters enables NMAP's operating system detection feature?

The -O flag is the dedicated Nmap switch for TCP/IP stack fingerprinting to identify the target's operating system.

Common mistakes.

A. -sV enables service and version detection, probing open ports to determine what application and version is running, not the OS.
B. -oS is an output format option that saves results in a 'script kiddie' stylized text format and has nothing to do with OS detection.
C. -sR was a legacy RPC scan method in older Nmap versions and does not perform operating system detection.

Concept tested. Nmap OS detection flag identification

Reference. https://nmap.org/book/man-os-detection.html

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