What is a feature of the Nessus vulnerability scanner?

The choice highlighting proprietary software with ongoing monitoring accurately reflects a significant feature of the Nessus vulnerability scanner. Nessus is developed by Tenable and operates as a commercial product, which means it is proprietary software. This offers users access to professional support and continuous updates that are critical for maintaining an effective security posture.

Moreover, ongoing monitoring aligns with Nessus’s capabilities, as it allows organizations to regularly scan their systems for vulnerabilities, assess potential risks, and ensure compliance with security policies. This feature is essential for organizations that need to stay ahead of emerging threats and vulnerabilities by continuously evaluating their systems rather than performing scans only on a periodic basis. Thus, this capability aids in proactive risk management in a fast-evolving threat landscape.

In contrast, the other options either describe features that are not characteristics of Nessus (like being open-source or limited to basic checks) or misrepresent its capabilities (such as suggesting that it primarily focuses on basic security configurations).