Which of the following is NOT a feature of Security Center's scanning capabilities?

The correct answer highlights a feature that is not part of Security Center's scanning capabilities. Reactive scanning implies that scans are triggered in response to an event or change in the environment, which contrasts with Security Center's proactive approach to vulnerability management. Security Center is designed to conduct assessments based on scheduled scans and continuous monitoring rather than reacting to specific incidents.

On the other hand, informed scanning, historical data tracking, and scanned asset performance monitoring are integral features of Security Center. Informed scanning uses context about the environment and asset configurations to enhance the effectiveness of the vulnerability assessment. Historical data tracking allows users to review past scan results, enabling trend analysis and comprehensive reporting. Scanned asset performance monitoring involves the continuous observation of assets to identify changes or anomalies that could signify vulnerabilities, thus ensuring ongoing security management. This proactive and comprehensive approach is central to the effective functioning of Security Center.