[Aug 02, 2022] 100% Real & Accurate 5V0-21.21 Questions with Free and Fast Updates

Self-Study Guide for Becoming an VMware HCI Master Specialist Expert

NEW QUESTION 21
An architect is tasked to design a VMware Horizon Solution with vSAN. The architect needs to use a solution to host the user's profile shares in a highly available manner, and it must be guest OS independent.
Which solution will match these requirements?

• A. Cluster in a box
• B. iSCSI on vSAN
• C. NFS on vSAN
• D. Cluster out of the box

Answer: B

 

NEW QUESTION 22
An architect is working with vSAN and setting the fault domains to support FTT=1.
How many fault domains will be needed?

• A. 0
• B. 1
• C. 2
• D. 3

Answer: C

 

NEW QUESTION 23
Which statement accurately describes the result when proper VM Storage Policy Affinity Rules on a stretched vSAN cluster are set?

• A. Proper policies result in higher inter-site bandwidth utilization.
• B. When a site is disconnected, the VM will lose access to its VMDK.
• C. When a site is disconnected, the VM will continue to have access to its VMDK.
• D. Bandwidth is unnecessarily sent across the inter-site link.

Answer: B

 

NEW QUESTION 24
An architect is designing a vSAN cluster.
Which storage controller option will yield optimal performance?

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

Answer: C

 

NEW QUESTION 25
Upon checking the latency goal under vSAN performance diagnostics, the vSAN Administrator sees this message displayed:
The increase in latency in the vSAN stack might be beyond expected limits.
Which two root causes can be identified to help remediate the issue? (Choose two.)

• A. Incorrect sizing of the disk groups capacity disks
• B. Large packet losses and retransmissions on the network layer
• C. vSAN VMKemel portgroup is configured with the "Route based on IP hash" teaming policy
• D. One or more disk groups are congested
• E. vSAN encryption is enabled

Answer: B,D

 

NEW QUESTION 26
An architect is working with an All-Flash vSAN configuration and will be using the Flash Caching Devices in vSAN.
Which requirement is specifically needed for these devices?

• A. Read endurance
• B. IOPS
• C. Write endurance
• D. Capacity

Answer: C

 

NEW QUESTION 27
An administrator wants to enable encryption on an existing vSAN cluster that already contains virtual machines.
Which additional step should the administrator take to ensure no data is lost during the encryption process?

• A. Make vCenter Server trust the KMS, either by trusting the KMS or by uploading a KMS certificate.
• B. Select 'Erase disks before use' check box when enabling encryption on a vSAN cluster.
• C. Disable vSphere Distributed Resources Schedule (DRS) on the vSAN cluster.
• D. Ensure that the vSAN Encryption is enabled by default on the existing cluster to encrypt old and new data.

Answer: A

Explanation:
Reference:
You must have configured a standard key provider and established a trusted connection between vCenter Server and the KMS.

 

NEW QUESTION 28
An administrator is tasked with setting up Kerberos authentication only for the vSAN File services.
Which version of Kerberos must be selected if the NFS version is v4.1?

• A. krb4
• B. krb5i
• C. krb5
• D. krb5p

Answer: B

 

NEW QUESTION 29
In a stretched vSAN cluster, how is Read Locality established after fail over to the secondary site?

• A. 50% of the reads comes from vSAN hosts on the local site
• B. 50% of the reads comes from vSAN hosts on the remote site
• C. 100% of the reads comes from vSAN hosts on the local site
• D. 100% of the reads comes from vSAN hosts on the remote site

Answer: D

Explanation:
In the event of a failure or maintenance event, the virtual machine is restarted on the remote site. The 100% rule continues in the event of a failure. This means that the virtual machine will now read from the replica on the site to which it has failed over. One consideration is that there is no cached data on this site, so cache will need to warm for the virtual machine to achieve its previous levels of performance.

 

NEW QUESTION 30
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. Highlight the required number of nodes required for the vSAN cluster as a constraint.
• B. Raise concerns regarding support when running VMs on an NFS share as risk.
• C. Point out the risks regarding putting the hosts in maintenance mode in terms of FSVM.
• D. Confirm on all of the requirements and move forward with the physical design.

Answer: A

 

NEW QUESTION 31
An administrator is tasked with sharing storage from one vSAN cluster to another vSAN cluster. SPBM management must be preserved end-to-end, and the policy must be applied by the source vSAN cluster which is storing the dat a. Both vSAN clusters are managed by the same vCenter server.
What should the administrator configure?

• A. vVOLs on vSAN
• B. iSCSI targets on vSAN
• C. HCI Mesh on vSAN
• D. NFS volumes on vSAN

Answer: C

 

NEW QUESTION 32
Which statement accurately describes the result when proper VM Storage Policy Affinity Rules on a stretched vSAN cluster are set?

• A. Proper policies result in higher inter-site bandwidth utilization.
• B. When a site is disconnected, the VM will lose access to its VMDK.
• C. When a site is disconnected, the VM will continue to have access to its VMDK.
• D. Bandwidth is unnecessarily sent across the inter-site link.

Answer: C

 

NEW QUESTION 33
A cache disk failure marked a vSAN disk group as failed, and the data is being rebuilt on other disk groups.
Which action should the vSAN administrator take to reduce the negative impact on the VMs?

• A. Enabling automatic rebalance
• B. Enabling Maintenance mode with no data evacuation
• C. Setting the vSAN policy's IOPS limit for object value to 0 (unlimited)
• D. Enabling Resync Throttling

Answer: D

 

NEW QUESTION 34
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. Two disk groups per host, each with one cache tier flash disk and six capacity tier flash disks.
• B. Two disk groups per host, each with one cache tier flash disk and four capacity tier flash disks.
• C. One disk group per host, with one cache tier flash disk and four capacity tier flash disks.
• D. Two disk groups per host, each with one cache tier flash disk and six capacity tier magnetic disks.

Answer: A

 

NEW QUESTION 35
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. Tag the vmk1 for Witness traffic.
• B. Configure vmk1 with IP address on the different network than that of vmk0.
• C. Tag the vmk0 for vSAN traffic.
• D. Configure vmk0 with IP address on the same range as that of vmk1.

Answer: D

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 vmk1.

 

NEW QUESTION 36
An 8-Node vSAN Stretched Cluster (4+4+1) with a single disk group has a policy with PFTT=1 (mirrored across sites) and SFTT=1/FTM Mirroring (Local Protection) configured.
The administrator has been alerted that there is a problem with the cluster. The following has been observed:
* The vSAN Witness Host is offline.
* Two disk failures on two hosts have occurred in the preferred site.
This has resulted in a critical production virtual machine's vmdk becoming inaccessible.
Which step needs to be performed by the administrator to resolve the issue?

• A. Replace all failed disks on the preferred site.
• B. Replace only one failed disk on the preferred site.
• C. Replace access to the existing vSAN Witness Host
• D. Replace the vSAN Witness Host

Answer: C

 

NEW QUESTION 37
for a customer who is planning to use vRealize Automation to provision 600 virtual machines into that cluster, with expected growth up to 1,000 VM. Each VM has a 40GB thick-provisioned disk.
Which flash disk size is required for the cache tier per ESXi node to meet all requirements?

• A. 700GB
• B. 400GB
• C. 800GB
• D. 600GB

Answer: C

 

NEW QUESTION 38
An architect is working with an All-Flash vSAN configuration and will be using the Flash Caching Devices in vSAN.
Which requirement is specifically needed for these devices?

• A. Read endurance
• B. IOPS
• C. Write endurance
• D. Capacity

Answer: C

Explanation:
Reference:
In all-flash configurations, vSAN uses the cache layer for write caching only. The write cache must be able to handle high write activities. https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan-planning.doc/GUID-1D6AD25A-459A-43D6-8FF5-52475499D6A2.html

 

NEW QUESTION 39
A company has deployed a 12-node (6-6-1) vSAN 7.0 stretched cluster for all production workloads.
The customer currently uses four different vSAN storage policies for running the workloads depending on the applications requirements:
* Policy 1 - Site Disaster Tolerance=Dual Site Mirroring, FTT=Erasure Coding
* Policy 2 - Site Disaster Tolerance=Dual Site Mirroring, FTT=Mirroring
* Policy 3 - Site Disaster Tolerance=None - Keep Data on Preferred, FTT=Mirroring
* Policy 4 - Site Disaster Tolerance=None - Keep Data on Non-Preferred, FTT=Mirroring During the setup of the vSAN stretched cluster, the following VM/Host Rules were created:
* Preferred Site - Preferred Site workloads should run on DC1 hosts.
* Secondary Site - Secondary Site workloads should run on DC2 hosts.
Which two activities should the administrator complete to ensure that there is no impact to production services during the maintenance window in the Preferred Site? (Choose two.)

• A. Update vSphere DRS site affinity rules so that Preferred Site workloads must run on hosts in DC2.
• B. Update vSphere DRS site affinity rules so that Preferred Site workloads should not run on hosts in DC1.
• C. Change the Site Disaster Tolerance setting in Policy 3 to be "Dual Site Mirroring".
• D. Change the FTT setting in Policy 3 to be "Erasure Coding".
• E. Change the Site Disaster Tolerance setting in Policy 4 to be "None - Keep Data on Preferred".

Answer: A,E

 

NEW QUESTION 40
An administrator is tasked to create a custom storage policy for workloads and is including additional disk stripes while defining the storage policy.
What is the main purpose of this practice?

• A. To improve performance
• B. To increase available storage space
• C. To set a failure tolerance
• D. To reconstruct corrupted data

Answer: A

Explanation:
https://blogs.vmware.com/virtualblocks/2016/09/19/vsan-stripes/ Striping may help performance if certain virtual machines are I/O intensive and others are not.
The "number of disk stripes per object" storage policy rule attempts to improve performance by distributing data contained in a single object (such as a VMDK) across more capacity devices. https://blogs.vmware.com/virtualblocks/2021/01/21/stripe-width-improvements-in-vsan-7-u1/

 

NEW QUESTION 41
An organization has two vSAN clusters managed by the same vCenter Server, each providing 100TB of storage. The first cluster runs at 75% of its storage capacity, and the second cluster runs at 50% of its storage capacity.
The company also has the following:
* An iSCSI array of 300TB. which runs at 76% of its capacity
* A NAS system of 200TB, which runs at 10% of its capacity
* A Fiber channel (FC) array of 300TB, which runs at 80% of its capacity The administrator is asked to add an additional 25TB of storage to the first cluster. The administrator is also made aware that there is no budget to purchase new hardware and that the vSAN Storage Policy Based Management must be kept in place.
Which storage option will work for this use case?

• A. Obtain additional free capacity from the existing FC storage.
• B. Create an HCI Mesh using the first cluster's datastore.
• C. Create an HCI Mesh using the second cluster's datastore.
• D. Obtain additional free capacity from the existing NAS storage.

Answer: D

 

NEW QUESTION 42
A company has engaged a consultant to upgrade an existing vSAN cluster to vSAN 7.0 U1. The company wants to ensure that the same vSAN process can be used in the future.
During the discovery phase, the consultant found the following information about the existing environment:
* The vCenter Server is currently version 7.0.
* The vSAN Cluster has the following configuration:
- vSAN version: 7.0
- Number of vSAN nodes: 6
- Encryption: enabled
- Deduplication and Compression: enabled
- Fault Domains: 1
- vSAN Capacity Utilization: 60%
* Each vSAN node has the following configuration:
- ESXi version: VMware vSphere 7.0
- CPU: 2 processors, 20 cores
- RAM: 1024GB RAM.
- Disk: 2 Cache SSDs and 6 Capacity SSDs
- Network: 4 x 10GbE
* All current hardware (which is from a single vendor) is listed on the vSAN Compatibility Guide for vSAN 7.
Which three recommendations should the consultant make to ensure that the vSAN cluster upgrade is completed? (Choose three.)

• A. Choose the Allow reduced redundancy option.
• B. Set VMware Distributed Resource Scheduling (DRS) to partially automated.
• C. Upgrade to VMware vCenter Server 7.0 U1.
• D. Disable vSAN Encryption before starting the upgrade process.
• E. Upgrade all vSAN nodes to VMware vSphere 7.0 U1 using the baselines capability within VMware Update Manager (VUM).
• F. Upgrade all vSAN nodes to VMware vSphere 7.0 U1 using the images capability within VMware Update Manager (VUM).

Answer: A,C,F

 

NEW QUESTION 43
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 from the Disk Group, and choose Full Data Migration.
• D. Remove the affected Disk Group from the vSAN Cluster, and choose No Data Migration.
• E. Replace the failed disk with a storage device that is identical in class but smaller in capacity.
• F. Put the affected vSAN host into maintenance mode to physically replace the storage device.

Answer: A,B,C

 

NEW QUESTION 44
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. Replace the failed disk with a storage device that is identical in class and capacity.
• B. Put the affected vSAN host into maintenance mode to physically replace the storage device.
• C. Remove the affected Disk from the Disk Group, and choose Full Data Migration.
• D. Remove the affected Disk Group from the vSAN Cluster, and choose No Data Migration.
• E. Replace the failed disk with a storage device that is identical in class but smaller in capacity.
• F. Remove the affected Disk Group from the vSAN Cluster, and choose Full Data Migration.

Answer: A,B,C

Explanation:
If you upgrade the capacity device, verify the following requirements:
- Verify that the cluster contains enough space to migrate the data from the capacity device.
- Place the host in maintenance mode. See Place a Member of Virtual SAN Cluster in Maintenance Mode.
"Select the flash capacity device or magnetic disk, and click Remove selected disk(s) from disk group."
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-4E3390C1-6C50-49E5-AEB6-C9BC037979A1.html

 

NEW QUESTION 45
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