What is the significance of security control inheritance in RMF?

• A. It reduces duplication by allowing common controls to be inherited by multiple systems.
• B. It eliminates the need for any assessment
• C. It makes individual system assessments unnecessary
• D. It increases duplication across systems

Answer: (A)

Security control inheritance in RMF allows an organization to reuse a set of controls defined at a higher level or in a common baseline and apply them to multiple systems. This is significant because it reduces duplication of effort: rather than implementing the same controls separately for each system, you can inherit them from a shared catalog, saving time and ensuring consistent security across environments. It also helps streamline the authorization process, since a common set of controls is evaluated once and then applied to multiple systems. However, inherited controls still need to be assessed within each system’s context to verify implementation and effectiveness, and system-specific needs may require additional controls or tailoring. In short, inheritance reduces duplication and promotes consistency, while not eliminating the need for assessment.