An organization requires a detailed inventory of services and operating systems of devices in their internal network without causing significant network disruption. As a cybersecurity analyst, which Nmap command would you use to perform an unobtrusive and in-depth network scan?
nmap -sn
nmap -sV -T2
nmap -O -T4
nmap -Pn -T4
The correct command -sV enables version detection to discover service version information, which is useful for creating a detailed inventory. Using -T2 along with -sV slows down the scan to reduce network load and potential disruption. Option A's -O flag is for OS detection but does not reduce the scan aggressiveness, and -T4 would increase the scan speed, likely causing more network disruption. Option B's -sn flag would only perform a ping scan, which doesn't gather service or OS version details. Option C's -Pn skips the discovery phase, which is not suitable when a detailed inventory is needed.
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