5V0-21.20 Practice Test Questions – VMware HCI Master Specialist

1. A company has a new production wide requirement to use Data At Rest Encryption for compliance reasons. An administrator is evaluating the impact of making this change to the vSAN datastores in production.

Which two statements are true when enabling Data At Rest Encryption on an existing vSAN datastore? (Choose two.)

2. A vSAN administrator is changing the number of stripes in the vSAN policy from 1 to 2 on a 3-node vSAN Cluster.

What is a possible impact of this policy change?

3. Which two must be considered when creating a vSAN solution that will utilize VMware vSphere Replication? (Choose two.)

4. A vSAN disk group contains one cache drive and four capacity drives. A drive that belongs to this disk group has failed. The entire disk group containing the failed drive Is offline.

What are two possible reasons the entire disk group Is offline? (Choose two.)

5. A vSAN administrator wants to implement end-to-end prioritization of vSAN traffic across the network in a shared network infrastructure that is using vSphere Distributed Switches (VDS).

Which two can help achieve this objective. (Choose two.)

6. Which should be verified before enabling de duplication and compression?

7. A storage administrator working for a large enterprise is consolidating multiple locations into 2 data centers running on a new HCI platform. vSphere Replication has been used with vSAN to migrate a large amount of data between two separate locations with high latency links. The administrator has been asked to plan the VM migration using vSphere Replication failover. The plan will involve stopping replication, failing the workloads over to the second site, and preparing for the next migration of VMs.

Which two statements are correct in this scenario? (Choose two.)

8. Which is true about vSAN fault domains?

9. A company has reserved the last Saturday of the month to conduct server maintenance. An administrator is allowed to perform maintenance from 5 AM to 12 PM. During the upcoming maintenance window, the administrator will upgrade the controller driver, controller firmware, and vSphere version.

Environment details:

• vCenter is already at the latest version
• 5 node vSAN cluster
• The VMs are using a mix of RAID-0, RAID-1, and RAID-5 policies
• Each node is storing 20 TBs worth of VMs

Which maintenance mode option will allow an administrator to successfully perform the required upgrades, while ensuring all VMs remain online?

10. An administrator would like to put a vSAN host in an existing vSAN Cluster in maintenance mode. vMotion is configured and DRS is set to Fully Automated and all other advanced settings are their defaults.

The administrator uses this PowerCU command:

Set-VMHost -VMHost “esxi-hoat01.corp.local” -State “Maintenance”

What is the default behavior?

11. A solution architect is considering a vSAN Cluster with two hosts per rack. The design should be configured to minimize the potential exposure to rack failure with the capacity to automatically restore compliance with the configured vSAN storage policy.

Which design consideration would minimize potential risks?

12. A company has reserved the last Saturday of the month to conduct server maintenance. An administrator is allowed to perform maintenance from 5 AM to 12 PM. During the upcoming maintenance window, the administrator will upgrade the controller driver, controller firmware, and vSphere version.

Environment details:

• vCenter is already at the latest version

• 5 node vSAN cluster

• The VMs are using a mix of RAID-0, RAID-1, and RAID-5 policies

• Each node is storing 20 TBs worth of VMs

Which maintenance mode option will allow an administrator to successfully perform the required upgrades, while ensuring all VMs remain online?

13. A vSAN administrator wants to implement end-to-end prioritization of vSAN traffic across the network in a shared network infrastructure that is using vSphere Distributed Switches (VDS).

Which two can help achieve this objective? (Choose two.)

14. An infrastructure architect is submitting a proposal for a vSAN Cluster.

These are the customer’s requirements:

• Maximize the amount of usable capacity.

• Deduplication and compression will be enabled to help maximize usable capacity.

Which disk group configuration should the architect include in their design?

15. An administrator observes this health check warning:

Controller firmware is VMware certified

They proceed to update the latest firmware on the Storage Controller. After a successful firmware upgrade, the same health check alert continues to display.

Which statement is true?

16. As part of a security strategy for data, a company has elected to migrate to a new KMS system.

Existing vSAN clusters are configured for Data At Rest Encryption. Considering the scenario, which statement is true?

17. Which storage policy can be assigned to virtual machines In a 5-node, all flash vSAN cluster, to provide the highest level of redundancy?

18. Refer to the exhibit.

An administrator is managing a 4-node, hybrid vSAN cluster. One of the hosts in the cluster went offline.

Referencing the information displayed in the resyncing objects section of the vSAN UI, what is the current state of this cluster?

19. Which is true of the vSAN iSCSI target service?

20. Where would an administrator enable deduplication and compression in a vSAN environment?

21. A vSAN administrator is changing the number of stripes in the vSAN policy from 1 to 2 on a 3-node vSAN Cluster .

What is a possible impact of this policy change?

22. When designing a vSAN Cluster, which three should be considered when sizing a vSAN datastore? (Choose three.)

23. Which step can be avoided when replacing a capacity tier device on a controller with passthrough mode and support for hot-plug?

24. Refer to the exhibit:

There are three hosts in a vSAN cluster. All virtual machines in the cluster are assigned a

storage policy with failures to tolerate set to 1 failure – RAID-1 (Mirroring) .

What is the result of placing a host in maintenance mode using the options shown in the image?

25. An administrator arrives at work and begins their morning checks on a four node, all-flash vSAN Cluster. They notice the vSAN datastore reached 99% capacity due to a single node failure.

How can the administrator provide temporary relief?

26. Reference the exhibit.

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?

27. A customer has lost connectivity to one of their sites In a vSAN Stretched Cluster.

When connectivity is restored, what DRS setting will ensure VMs are not migrated back before resyncs are complete?

28. A failed storage controller has two vSAN disk groups attached. The components contained on the dnves in those disk groups are marked Degraded. vSAN reports that some objects do not comply with their assigned storage policy.

How is the compliance issue resolved?

29. 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?

30. During planned maintenance of a four-node vSAN cluster, an outsourced IT contractor accidentally removed a 2.5" SSD cache disk from one of the vSAN nodes. The storage policy has been configured with FTT=1 RAID 1, and the disk management UI marked the disk group as absent.

Which remediation steps should the administrator select to ensure VMs become compliant with the storage policy as soon as possible?