What should be done to ensure the reliability of Authorization Hosts?

The choice to set keyword handshakes is considered correct because this method enhances security by requiring verification through shared knowledge before establishing communication or access between systems. In the context of Authorization Hosts, which are critical in controlling access to sensitive data and systems, ensuring that only trusted parties can initiate interactions is essential. By implementing keyword handshakes, you create an additional layer of authentication that can deter unauthorized access and bolster the integrity of the interaction.

The other strategies, while they may offer some level of security, do not provide the same direct impact on ensuring reliability in the context of Authorization Hosts. Regular password changes, for example, enhance security by minimizing risk from compromised credentials but do not fundamentally establish trust in the communication between hosts. Monitoring local systems only limits visibility to potential threats that may originate from outside the local environment. Limiting access to specific users is useful for managing who can access systems; however, it does not address the verification of the authenticity of the communication itself, which is crucial for ensuring reliable interactions in a networked environment.