Which system is designated to control and safeguard COMSEC material?

The correct choice indicates that the CMCS, or COMSEC Management Control System, is specifically designed to manage and safeguard COMSEC material. This system provides a framework for handling communications security to ensure the integrity and confidentiality of classified information. The CMCS supports various functions, including inventory management, tracking of COMSEC materials, and safeguarding sensitive information, making it essential for compliance with regulatory requirements and security protocols.

In comparison to other systems, while the COMSEC Management System broadly refers to the collective set of procedures and tools for managing COMSEC, the CMCS is a more focused tool that provides the necessary controls for material management. The Information Assurance System focuses on broader aspects of information protection, often including assessments and risk management rather than specific COMSEC material. The Secure Document Control System, while relevant for managing sensitive documents, does not specifically address the unique requirements of COMSEC material management.

Thus, the CMCS is the dedicated system with the necessary mechanisms to control, safeguard, and track COMSEC materials effectively.