Which statement correctly describes the relationship between -sV and --version-intensity 0 vs 9?

• A. -sV performs version detection with default probing; --version-intensity controls how aggressively probes are performed; 0 is minimal, 9 is maximal.
• B. -sV disables version detection; --version-intensity sets the number of probes per host.
• C. -sV only reports service names; --version-intensity changes timing.
• D. -sV is for OS detection; --version-intensity adjusts logging verbosity.

Answer: (A)

Version detection is activated by the -sV option, which makes Nmap probe open ports to identify the software and version running on those services. The --version-intensity option tunes how aggressively that probing is performed. A value of 0 means minimal probing, keeping scans quick and less intrusive, while a value of 9 uses a full, aggressive probe set for more thorough identification, though it takes longer and can be heavier on the network. By default, -sV uses a reasonable default probing level, but you can adjust the intensity to trade speed for depth as needed. The other descriptions don’t fit because -sV does not disable version detection and is not about OS detection or logging verbosity; the version-intensity setting specifically governs how many and which probes are sent during version discovery.