Certified Information Systems Security Professional (CISSP) Practice Exam 2025 – All-in-One Guide to Mastering Your Certification!

In the context of a Trusted Path, the activation of communication is typically limited to the Trusted Computing Base (TCB) or the user. This is crucial as the concept of a Trusted Path requires a secure channel that allows users to communicate with the system in a way that mitigates the risks of interception or tampering.

When the TCB activates the communication, it ensures that the communication is being managed by the security-critical components of the system, which have been rigorously defined and protected. This means they have been verified and are part of the system's security architecture, allowing for the establishment of a secure communication pathway. Furthermore, when users initiate communication, it enables them to send inputs or commands while relying on the security mechanisms that guard against unauthorized access or modifications.

The design of Trusted Path ensures that unauthorized processes and entities cannot compromise the security of the communication. This containment of activation capability to the TCB and the user establishes a strong defense mechanism against potential threats, ensuring that sensitive information can be exchanged securely. This advanced level of security is foundational for any system aiming to maintain confidentiality and integrity in sensitive transactions or communications.