5V0-21.21 Real Exam Questions and Verified Answers

Question 1 Single choice

An architect is designing for a production vSAN cluster, and the customer introduced these requirements related to File Services: A minimum of 12 files shares. 30TB NFS capacity to mount workload VMs.

What should be the architect's recommendations?

A
Point out the risks regarding putting the hosts in maintenance mode in terms of FSVM.
B
Confirm on all of the requirements and move forward with the physical design.
C
Raise concerns regarding support when running VMs on an NFS share as risk.
D
Highlight the required number of nodes required for the vSAN cluster as a constraint.

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Correct answer: D

Question 2 Single choice

An architect collected the below technical requirements from the customer during a vSAN cluster design workshop:

Maximize the vSAN datastore usable capacity.
Deduplication and compression are required to help utilize available capacity efficiency.
Ensure the highest level of resiliency wherever possible.

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

A
One disk group per host, with one cache tier flash disk and four capacity tier flash disks.
B
Two disk groups per host, each with one cache tier flash disk and four capacity tier flash disks.
C
Two disk groups per host, each with one cache tier flash disk and six capacity tier flash disks.
D
Two disk groups per host, each with one cache tier flash disk and six capacity tier magnetic disks.

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Correct answer: D

Question 3 Single choice

An architect is designing a vSAN cluster.

Which storage controller option will yield optimal performance?

A
Hugh queue depth
B
Set caching to 50% read on the controller
C
Enable battery write-back caching
D
RAID 0

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Correct answer: D

Question 4 Single choice

An administrator is planning to change a vSAN Storage Policy to apply a Failures To Tolerate (FTT) of 2, using RAID-6.

What is the minimum number of vSAN nodes required?

A
6
B
4
C
5
D
8

Show answer and explanation

Correct answer: A

Explanation

References:
https://docs.vmware.com/en/VMware-Cloud-on-AWS/services/com.vmware.vsphere.vmc-aws-manage-data-center-vms.doc/GUID-EDBB551B-51B0-421B-9C44-6ECB66ED660B.html

Question 5 Single choice

An administrator has been tasked to reboot a node in an encrypted vSAN cluster. The vSAN disk groups on that node become locked after rebooting the node.

Which step should be performed to exit the locked state?

A
Manually replace the Host Encryption Key (HEK) of each affected host.
B
Restore the communication with the KMS server, and re-establish the trust relationship.
C
Replace the caching device in each affected disk group.
D
Run /etc/init.d/vsanvpd restart to rescan the VASA providers.

Show answer and explanation

Correct answer: B

Question 6 Multiple choice

Due to the success of the recently deployed developer-only private cloud solution, a company has a new requirement to at least double the usable capacity in their all-flash vSAN cluster.

The vSAN cluster is deployed into a co-located datacenter that is owned by a third-party hosting company.
The hosting company charges a fixed monthly cost for rack space and power consumption. The service owner has been given a limited budget for additional hardware purchases, but not for on-going co-location costs.

The current vSAN cluster has the following configuration: 10 vSAN Nodes with 2 CPUs (20 cores), 512 GB RAM

1 Disk Group per vSAN node
- 1 x 400 GB
- 4 x 1.8 TB

De-duplication and Compression is enabled.

vSAN Capacity is currently:
- Total: 72 TB
- Usable: ~40 TB (FTT1/RAID1) and ~60 TB (FTT1/RAID5).

As a result of any action taken, the service owner would like to ensure that overall availability of the vSAN cluster is increased.

Which two recommendations meet the requirement to increase capacity while maintaining service availability? (Choose two.)

A
Install an additional 400 GB SSD and 4 x 1.8 TB SSDs per vSAN node.
B
Update the existing Disk Group, and claim the newly installed drives for each node.
C
Create a new Disk Group, and claim the newly installed cache and capacity SSD drives for each node.
D
Install an additional 3 x 1.8 TB SSDs per vSAN node.
E
Replace existing SSDs with an 800 GB SSD and 4 x 3.8 TB SSDs per vSAN node.

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Correct answers: C, D

Question 7 Single choice

A 4-node vSAN cluster is configured with an erasure coding storage policy. The Ensure Accessibility maintenance mode was selected. While performing the maintenance, a second node fails.

What will be the impact on the vSAN cluster?

A
There will be no impact on performance.
B
The VMs will no longer be accessible.
C
The performance will be degraded.
D
The VMs will be in a suspended state.

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Correct answer: A

Explanation

References:
https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.virtualsan.doc/GUID-521EA4BC-E411-47D4-899A-5E0264469866.html

Question 8 Single choice

After a vSAN Witness Appliance network configuration, the vSAN administrator notices that vSAN traffic flows from vmk0 (Management Traffic) rather than vmk1 (vSAN Traffic).

Which step should be taken to resolve this issue?

A
Configure vmk0 with IP address on the same range as that of vmk1.
B
Tag the vmk0 for vSAN traffic.
C
Configure vmk1 with IP address on the different network than that of vmk0.
D
Tag the vmk1 for Witness traffic.

Show answer and explanation

Correct answer: A

Explanation

If both vmk0 and vmk1 are configured on the same range, a multihoming condition will occur and vSAN traffic will flow from vmk0, rather than vmk 1.

References:
http://www.vmwarearena.com/vsan-stretched-cluster-how-to-configure-vsan-witness-appliance/

Question 9 Multiple choice

An administrator has received an alert indicating that a single capacity device is close to failing within the production vSAN Cluster. The administrator must now complete preemptive maintenance on the vSAN Cluster without impacting the availability of workloads or vSAN File Services.

The following information is known about the vSAN Cluster: vSAN 7.x Cluster vSAN node count: 8
De-Duplication and Compression: Enabled.
Encryption: Disabled
Current Utilization: 45%
Disk Groups: 2
Devices per node: 2 x 400 GB SSD, 6 x 1.8 TB SSD

Which three steps should the administrator take to successfully complete the task? (Choose three.)

A
Remove the affected Disk Group from the vSAN Cluster, and choose Full Data Migration.
B
Replace the failed disk with a storage device that is identical in class and capacity.
C
Remove the affected Disk Group from the vSAN Cluster, and choose No Data Migration.
D
Replace the failed disk with a storage device that is identical in class but smaller in capacity.
E
Put the affected vSAN host into maintenance mode to physically replace the storage device.
F
Remove the affected Disk from the Disk Group, and choose Full Data Migration.

Show answer and explanation

Correct answers: A, B, F

Question 10 Single choice

A customer is planning to migrate their physical Microsoft SQL Server clustered workloads to vSAN enabled vSphere clusters.

The following requirements must be met:

Each MSSQL cluster is made up of 3 nodes Highest possible availability against node failures Some of the vSAN clusters will only consume storage

What should the architect recommend?

A
vSAN iSCSI Target Service
B
Stretched vSAN Cluster
C
vSAN Direct
D
vSAN File Services

Show answer and explanation

Correct answer: A

Explanation

References:
https://kb.vmware.com/s/article/2147661