Final answer:
The claim that a host can be removed from a cluster without entering maintenance mode is false. Maintenance mode is required to ensure safe migration or shutdown of VMs, preventing service disruptions.
Step-by-step explanation:
The statement that you can remove a host from a cluster without putting it in maintenance mode first is false. In the context of managed clusters, such as those used in virtualization platforms, it is typically required to put a host into maintenance mode before removing it from a cluster. This process ensures that any running virtual machines (VMs) can be safely migrated to other hosts in the cluster or shut down, preventing service disruption and data loss. Without entering maintenance mode, the removal of a host could cause unexpected downtimes and issues with cluster resources.