Certified Administrative Professional (CAP) Practice Exam 2025 – Your All-in-One Guide to Exam Mastery!

The correct choice is CNSS, which stands for the Committee on National Security Systems. This organization plays a crucial role in establishing policy, guidance, and standards for the security of national security systems across the United States. It focuses specifically on the protection of classified information and supports the extensive and secure operation of systems that handle national security data.

The Department of Homeland Security (DHS) primarily focuses on protecting the nation's critical infrastructure and coordinating responses to domestic emergencies but does not set the specific policies for national security systems. The National Security Agency (NSA) is heavily involved in signals intelligence and information assurance for those systems, but it does not set policy; rather, it implements the guidance established by the CNSS. The FBI's role is more centered on domestic security and law enforcement aspects rather than setting policy for national security system security. Thus, CNSS is the authoritative body that defines and sets the policies relevant to this area.