Which bridge does the Controller VM use by default to communicate with the AHV host it runs on?

An administrator is performing AHV upgrades on an 8-node cluster configured with Redundancy Factor 3.
How many nodes would be placed into maintenance mode simultaneously?

Which AOS component is responsible for monitoring and eliminating hots-pots within the cluster?

What is the easiest way to get a call back from Nutanix Support on an open ticket?

An administrator needs to configure a solution that ensures VMs automatically power on in a specific order at the DR site in the event of a disaster.
Which feature will achieve this?