In determining when it may be necessary to perform a credentialed scan against a system instead of a non- credentialed scan, which of the following requirements is MOST likely to influence its…

Enumerating the host OS can often be performed by non-credentialed scans through network-based fingerprinting techniques like banner grabbing or analyzing TCP/IP stack behavior.

Footprinting the network primarily involves discovering network topology, active devices, and accessible services, which can largely be accomplished through external network probes without system credentials.

Checking for open ports with listening services is a fundamental function of network-based, non-credentialed vulnerability scans, as it only requires probing network services without logging into the host.

Auditing file system permissions necessitates authenticated access to the target operating system to query and evaluate local security descriptors. This deep level of system access and configuration inspection is a primary distinguishing feature and capability of a credentialed scan over a non-credentialed scan.