To clear an alarm in vSphere Client for a host that has failed, which steps should an administrator take?

To clear an alarm in the vSphere Client for a host that has failed, selecting the option that involves navigating to the "Triggered Alarms" within the "Issues and Alarms" section is the appropriate approach. When an alarm is triggered, it indicates an issue that requires attention. By choosing "Reset to Green," the administrator acknowledges that the issue has been addressed or is no longer relevant, effectively resetting the alarm's status to indicate normal operation.

This step is important as it not only clears the alarm notification but also ensures that the administrator's action is documented in the system. It helps maintain clarity in alarm monitoring by distinguishing between current issues and resolved situations, allowing for more effective management of the virtual environment. Additionally, it prevents confusion that may arise from having lingering alarms that are no longer applicable.

Using "Acknowledge" serves a different purpose; it indicates that the alarm has been noted but does not reset its status to reflect normal conditions. Other choices may involve deleting alarm definitions or checking health statuses, which do not address the immediate need to clear an alarm that has been triggered. Thus, resetting the alarm to green is the most direct way to manage and update the alarm status effectively.