From a risk management perspective, the primary benefit of using automated system configuration validation tools is that they reduce the inherent risk, which is the risk that exists before any controls are applied.
Automated system configuration validation tools can help to ensure that the system settings are consistent, compliant, and secure, and that they match the predefined standards and policies. This can reduce the likelihood and impact of errors, misconfigurations, vulnerabilities, or deviations that may compromise the system's functionality, performance, or integrity. The other options are not the primary benefits of using automated system configuration validation tools, although they may be secondary benefits or outcomes of doing so. Residual risk is the risk that remains after the controls are applied, and it may not be directly affected by the automated system configuration validation tools. Staff costs and operational costs are related to the efficiency and economy of the system configuration process, but they are not the main risk management objectives. References = Risk and Information Systems Control Study Manual, Chapter 4: Risk Response, page 150.