312-50V13 Question #270: Real Exam Question with Answer & Explanation

The correct answer is A: -sv. To determine the type and version of services running on open ports using Nmap, the -sv command-line parameter is used.

Submitted by lars.no· Mar 6, 2026Scanning Networks

Question

Consider the following Nmap output: What command-line parameter could you use to determine the type and version number of the web server?

To determine the type and version of services running on open ports using Nmap, the -sv command-line parameter is used.

Common mistakes.

B. The -Pn (No ping) parameter skips the host discovery phase, treating all hosts as online, and is not used for service version detection.
C. The -V parameter (or --version) simply prints the Nmap version number and exits, it does not scan for service versions.
D. The -ss parameter (or -sS) specifies a SYN scan (stealth scan), which is a port scanning technique but does not perform service version detection.

Concept tested. Nmap service version detection

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

#Nmap#port scanning#service version detection#reconnaissance tools

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