VMware Certified Professional - Data Center Virtualization (VCP-DCV) Practice Exam

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Which action is required after configuring a VM-Host rule within a DRS cluster?

Review the existing settings for conflicts.
Document the settings for future reference.
Notify users about the change.
Test the rule by migrating a virtual machine.

The correct answer is: Review the existing settings for conflicts.

Configuring a VM-Host rule within a Distributed Resource Scheduler (DRS) cluster establishes specific relationships between virtual machines and hosts. This action is critical because it influences how resources are allocated and helps to maintain performance and availability. After setting up such a rule, the appropriate next step is to review the existing settings for conflicts. When you create a rule, it's essential to ensure that there are no conflicts with existing VM-to-Host rules, affinity rules, or anti-affinity rules. Conflicts could lead to improper scheduling decisions, potentially impacting the overall efficiency and performance of the cluster. By reviewing for conflicts, administrators can ensure that the intended behavior of the DRS is correctly implemented and that the resources are optimized according to the newly added rules. This step helps in identifying any overlaps or constraints that could hinder the DRS's ability to manage VMs effectively.