An administrator would like to configure vSphere HA to use two isolation addresses. How would this affect the behavior of HA?

HA does not restart the host itself; it restarts virtual machines running on a host that is deemed failed or isolated, and only after all configured isolation addresses are confirmed unreachable.

vSphere HA does not fall back to using the vCenter Server IP as an isolation address; the isolation detection is strictly based on the explicitly configured isolation response addresses and the default gateway.

vSphere HA evaluates host isolation by pinging all configured isolation addresses. If at least one isolation address responds, HA determines the host still has network connectivity and does not trigger the isolation response. Configuring two addresses therefore increases fault tolerance - a single address failure will not cause unnecessary VM restarts or isolation responses.

If at least one isolation address is reachable, the host is explicitly considered non-isolated by HA logic, which is the opposite of what this choice states.