A vSphere Administrator notices that the newly deployed ESXi hosts cannot stay in a connected state in
vCenter Server for more than 60 seconds at a time. The Administrator knows that the hardware is in good
health and that the ESXi hypervisors are properly configured.
What is the source of the problem?
The hosts are not a part of a vSphere Distributed Switch.
Firewall rules that have too many ports open.
Firewall rules preventing hosts from sending heartbeats to vCenter Server.
The hosts do not have persistent logging configured.