CDSE Facility Security Officer (FSO) Practice Test

The correct frequency for the Defense Security Service (DSS) to conduct facility security reviews is every three years or as necessary. This period allows the DSS to thoroughly assess the security measures in place within the facility and ensure compliance with the National Industrial Security Program (NISP). The review assesses physical security, information security, cyber security, and personnel security practices, ensuring that facilities adequately safeguard classified information.

Conducting these reviews every three years strikes a balance: it allows facilities enough time to implement security measures, while still being frequent enough to adapt to any emerging threats or changes in security requirements. Additionally, the provision for "as necessary" ensures that if there are significant changes in a facility's operations, security issues, or threats, the DSS can conduct a review outside of the three-year cadence.

This systematic approach is crucial in maintaining national security and ensuring that companies that handle classified information remain compliant with applicable regulations and practices.