Which of the following sentences is correct about High Availability (HA) configuration?

The choice indicating that High Availability (HA) cannot be configured while there are ports participating in PortShield is accurate because PortShield creates a virtual interface that groups multiple physical interfaces. This can complicate the configuration of HA, as HA requires certain network configurations to ensure redundancy and proper failover capabilities. When ports are part of PortShield, it may lead to issues that can prevent HA from functioning as intended, and thus it is prudent to ensure that PortShield is not being used before attempting to set up HA.

This understanding underscores how important it is to have a clear network architecture that supports HA. In contrast, the other options fail to align with the requirements and capabilities of HA configuration. For instance, enabling HA with a single device is contrary to the HA concept, which involves two or more devices working in tandem to provide redundancy. The necessity for specific settings in HA configurations is essential as rules and policies need to be clearly established to guide the behavior of each device in the event of a failover. Lastly, assuming that all settings must be configured before enabling HA overlooks the process where HA can often be incrementally set up, with appropriate adjustments made once the function is active. Therefore, understanding the interaction between PortShield and HA is critical for effective firewall