The correct answer is 'Credentialed scan'. Performing credentialed scans on network devices enables deeper visibility into their configurations and potential vulnerabilities without causing the disruptions often associated with non-credentialed scans. These scans can access logs, configurations, and other details that are not available to a non-credentialed scan while reducing the chance of causing issues to the device's stability. Credentialed scans are considered best practices when allowed and possible on devices as they provide the most thorough results with fewer false positives and less operational risk to the devices being scanned.