VMware HCI Master Specialist

Here you have the best VMware 5V0-21.20 practice exam questions

  • You have 54 total questions across 11 pages (5 per page)
  • These questions were last updated on March 17, 2026
  • This site is not affiliated with or endorsed by VMware.
Question 1 of 54
Reference the exhibit.
Exam 5V0-21.20: Question 1 - Image 1
A university campus has a site topology illustrated in the exhibit. Adjacent connected buildings are connected with a single 40gb layer 3 network with a RTT of
0.6ms as depicted by each line. An architect wants to configure a fault domain in each building.
What would the architect need change in order to implement a fully supported vSAN Cluster?
Answer

Suggested Answer

The suggested answer is A.

To implement a fully supported vSAN Cluster, it is necessary to enable a single Layer 2 network across all buildings for vSAN connectivity. This ensures that all nodes in different buildings are on the same Layer 2 domain and can directly communicate with each other, which is a fundamental requirement for vSAN to function correctly. Reducing RTT or adding redundant links would not address the Layer 2 network requirement, and enabling IPv6 is not relevant to the Layer 2 connectivity requirement.

Community Votes1 vote
ASuggested
100%
Question 2 of 54
When designing a vSAN Cluster, which three should be considered when sizing a vSAN datastore? (Choose three.)
Answer

Suggested Answer

The suggested answer is A, C, E.

When designing a vSAN Cluster, it is crucial to consider the following aspects for sizing a vSAN datastore: the Storage Policy or Policies to be used, as these define the characteristics and requirements of the stored data; vSAN Slack Space, which is essential for maintaining optimal performance and preventing the system from running out of available space; and On-Disk Format overhead, which accounts for the space used by the system to manage and store data on the drives. These factors directly impact the available storage capacity and overall efficiency of the vSAN environment.

Community Votes1 vote
ACESuggested
100%
Question 3 of 54
Which must be configured by a Kubernetes user allow for dynamic provisioning of container volumes in vSAN using storage policies?
Answer

Suggested Answer

The suggested answer is C.

To allow for dynamic provisioning of container volumes in vSAN using storage policies, a Kubernetes user must configure a StorageClass. The StorageClass object in Kubernetes provides a way for administrators to define different classes of storage, each with their own policies and parameters, such as replica numbers, encryption, or performance characteristics. When a PersistentVolumeClaim (PVC) requests storage with a particular StorageClass, the associated storage policy is applied to dynamically provision the storage accordingly.

Question 4 of 54
An All-Flash vSAN cluster has 4 nodes with this disk group composition on each host:
✑ 1 × 800 GB SAS SSD
✑ 6 × 3.84 TB SATA SSD
An administrator observes that in an All-Flash cluster, the Write Buffer Free Percentage is consistently low. As a result, there is increased latency experienced by the workloads.
Which remediation steps will resolve this issue?
Answer

Suggested Answer

The suggested answer is A.

The consistent low Write Buffer Free Percentage in the All-Flash cluster is an indicator that the current cache device is being overwhelmed due to insufficient caching capacity. Adding a second disk group with a new cache device and distributing the capacity disks equally will significantly increase the overall caching capacity. This approach does not require replacing existing hardware, thereby avoiding the complexity and higher costs associated with changing cache devices in existing disk groups. It also allows for better scalability and utilization of cache resources, improving the efficiency and performance of the write buffer.

Community Votes4 votes
ASuggested
75%
D
25%
Question 5 of 54
An administrator receives an alert for vCenter being unavailable. With vCenter running on vSAN, the administrator wants to know if any other VMs are impacted.
What command can an administrator run to determine the overall health of the vSAN objects?
Answer

Suggested Answer

The suggested answer is D.

To determine the overall health of the vSAN objects, the command 'esxcli vsan health cluster list' should be used. This command provides a comprehensive overview of the health status of the vSAN cluster, including any issues with the vSAN objects. This allows administrators to quickly assess the health and functionality of the vSAN environment.

Community Votes3 votes
DSuggested
100%

About the VMware 5V0-21.20 Certification Exam

About the Exam

The VMware 5V0-21.20 (VMware HCI Master Specialist) validates your knowledge and skills. Passing demonstrates proficiency and can boost your career prospects in the field.

How to Prepare

Work through all 54 practice questions across 11 pages. Focus on understanding the reasoning behind each answer rather than memorizing responses to be ready for any variation on the real exam.

Why Practice Exams?

Practice exams help you familiarize yourself with the question format, manage your time, and reduce anxiety on the test day. Our 5V0-21.20 questions are regularly updated to reflect the latest exam objectives.