What is another category of the Recover (RC) function according to the NIST Cybersecurity Framework?

The correct answer focuses on the concept of "Restoration of impaired systems," which is a significant aspect of the Recover function as defined in the NIST Cybersecurity Framework. This framework emphasizes the importance of recovering from cybersecurity incidents in a systematic way, which includes restoring systems to a functional state after an incident occurs.

This restoration process involves restoring data, implementing backup systems, and ensuring that operations can continue effectively after any disruptions caused by security breaches or failures. The Recover function is all about resilience and ensures that organizations can function smoothly after an incident.

The other options represent important security practices but do not align with the specific recovery focus of the NIST Cybersecurity Framework. For instance, data encryption techniques are critical for protecting information but fall under different categories associated with protecting data rather than recovery. Periodic threat assessments are essential for identifying vulnerabilities and threats but are more aligned with the Identify and Protect functions than with restoring systems and capabilities. User training and awareness are fundamental to a proactive security strategy but do not directly involve the recovery of impaired systems after an incident.