オンライン問題で最適な5V0-21.21試験練習問題（最新の112問題)
練習問題5V0-21.21素晴らしい練習用のVMware HCI Master Specialistテスト問題
質問 # 51
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. 100% of the reads comes from vSAN hosts on the remote site
- C. 50% of the reads comes from vSAN hosts on the remote site
- D. 100% of the reads comes from vSAN hosts on the local site
正解：B
解説：
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.
質問 # 52
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.
正解：B
質問 # 53
During a design workshop, the customer has security concerns about the vSAN data transfer between the vSAN nodes.
Which setting should the architect recommend enabling on the vSAN cluster to address this requirement?
- A. Data-in-transit encryption
- B. Data-at-rest encryption
- C. KMS Cluster
- D. TRIM/UNMAP
正解：A
質問 # 54
An administrator notes that the Data-At-Rest Encryption keys have expired.
Which action is needed to resolve this situation?
- A. Generate new encryptions keys at the vSAN cluster level
- B. Add a new Standard Key Provider at the vSAN cluster level
- C. Add an additional KMS at the vCenter server level
- D. Generate new encryptions keys at the vCenter server level
正解：A
質問 # 55
An administrator has been tasked with enabling encryption for existing virtual machines on a vSAN cluster.
Which three prerequisites must be satisfied before completing the task? (Choose three.)
- A. Verify if a role with privilege "Cryptographic operations.Encrypt new" is assigned
- B. Verify if a role with privilege "Cryptographic operations.Migrate" is assigned
- C. Enable Data-In-Transit encryption first
- D. Create an encryption storage policy
- E. Enable that the virtual machines are powered on
- F. Establish a trusted connection with the KMS
正解：A、D、F
解説：
Because Before you can create encrypted virtual machines, you must create an encryption storage policy. You create the storage policy once, and assign it each time you encrypt a virtual machine or virtual disk.
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.security.doc/GUID-
7DE1ED8F-880B-421E-B27B-5AAA58454AFA.html
質問 # 56
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. iSCSI on vSAN
- B. Cluster out of the box
- C. NFS on vSAN
- D. Cluster in a box
正解：A
質問 # 57
multiple data centers, the customer relayed the following information:
* Highest possible mitigation during a host failure in terms of capacity.
* A constraint in this year's IT budget.
What should the architect recommend?
- A. Enable performance services.
A minimum cluster of 6 vSAN nodes. - B. Enable operations reserve.
A minimum cluster of 3 vSAN nodes. - C. Enable IOInsight Metrics.
A minimum cluster of 2 vSAN ROBO nodes. - D. Enable host build reserve.
A minimum cluster of 4 vSAN nodes.
正解：D
解説：
Performance services and IOinsight Metrics used for performance analysis. Operation reserve for internal VSAN operations.
https://blogs.vmware.com/virtualblocks/2020/09/24/effective-capacity-management-with-vsan-7- update-1/
質問 # 58
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. Configure vmk0 with IP address on the same range as that of vmk1.
- D. Tag the vmk0 for vSAN traffic.
正解：B
質問 # 59
During a vSAN design workshop, an architect collected these customer requirements:
* Leverage vSAN storage policies with Erasure Coding.
* Enable Deduplication and Compression.
* Use the minimum number of hosts in the cluster.
* Maintain full storage policy compliance when two nodes are down.
Which vSAN cluster design meets the customer's requirements?
- A. Six nodes Hybrid vSAN cluster
- B. Five nodes All-Flash vSAN cluster
- C. Six nodes All-Flash vSAN cluster
- D. Five nodes Hybrid vSAN cluster
正解：C
解説：
Reference: https://www.vmware.com/files/pdf/products/vsan/vmware-vsan-62-space-efficiency- technologies.pdf
質問 # 60
An administrator managing a vSAN cluster of six-nodes with policy FTT-2/RAID-6 decided to put one of the nodes in maintenance mode using the "Full-data migration" option.
What will happen after this action is taken?
- A. The system will prompt to add an additional host to the cluster in order to preserve the policy compliance.
- B. The host will enter into maintenance mode if both components of a certain object are residing on that host, then one of the components will be moved to another available host.
- C. The host will enter in maintenance mode and only data with no redundancy will remain accessible.
- D. The host will enter in maintenance mode and the data will remain accessible until the host exits maintenance mode.
正解：A
解説：
Let's take a look at a few unique scenarios with regard to maintenance mode. First, let's see what will happen if you have 6 hosts within your cluster, you have applied a policy containing FTT=2/RAID-6, and you want to place a host in maintenance mode using the 'Full data migration' option. This means all the data residing on the host will be evacuated to another host within the cluster. With this type of data configuration, the system will prompt you to add an additional host to the cluster in order to preserve the policy compliance. The policy will always require there must be two failures that can be tolerated, even during cluster reduction due to maintenance mode removing a host. Note that a minimum of six hosts is required to support a storage policy with RAID-6(FTT=2) erasure coding.
https://blogs.vmware.com/virtualblocks/2020/02/06/what-happens-vsan-host-in-maintenance- mode/
質問 # 61
Upon investigating a workload performance issue, a vSAN administrator observed a high backend IOPs on a vSAN cluster.
Which two causes explain this behavior? (Choose two.)
- A. There is a vSAN node failure.
- B. The object repair timer value has been increased.
- C. The vSAN policy protection level has changed from FTT=0 to FTT=1.
- D. The cluster DRS threshold has been set to Aggressive.
- E. The vSAN Resync throttling is enabled.
正解：C、E
質問 # 62
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 from the Disk Group, and choose Full Data Migration.
- B. Replace the failed disk with a storage device that is identical in class but smaller in capacity.
- C. Remove the affected Disk Group from the vSAN Cluster, and choose Full Data Migration.
- D. Replace the failed disk with a storage device that is identical in class and capacity.
- E. Remove the affected Disk Group from the vSAN Cluster, and choose No Data Migration.
- F. Put the affected vSAN host into maintenance mode to physically replace the storage device.
正解：C、D、F
解説：
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
質問 # 63
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 reconstruct corrupted data
- B. To increase available storage space
- C. To improve performance
- D. To set a failure tolerance
正解：C
解説：
Striping may help performance if certain virtual machines are I/O intensive and others are not.
https://blogs.vmware.com/virtualblocks/2016/09/19/vsan-stripes/Striping 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/
質問 # 64
An administrator is tasked with setting up HCI mesh between the following two vSAN clusters:
- Cluster 1 uses FTT=1 via mirroring
- Cluster 2 uses FTT=1 via Erasure Coding
The administrator configures Cluster 2 as the cluster that is contributing storage to HCI mesh.
Which FTT applies to objects created on Cluster 1 when using the HCI Mesh shared storage?
- A. HCI mesh always uses FTT = 1.
- B. HCI Mesh always uses the default vSAN policy from the target site.
- C. HCI Mesh always uses the source vSAN cluster to set its policy.
- D. HCI mesh always uses FTT = 0.
正解：B
質問 # 65
A company hosts a vSAN 7 stretched cluster for all development workloads. The original sizing of a maximum of 250 concurrent workloads in the vSAN cluster is no longer sufficient and needs to increase to at least 500 concurrent workloads within the next six months. To meet this demand, the original 8-node (4-4-1) cluster has recently been expanded to 16 nodes (8-8-1).
Which three additional steps should the administrator take to support the current growth plans while minimizing the amount of resources required at the witness site? (Choose three.)
- A. Deploy a new extra large vSAN witness appliance at the witness site.
- B. Deploy a new large vSAN witness appliance at the witness site.
- C. Upgrade the vSAN stretched cluster to vSAN 7.0 U1.
- D. Configure the vSAN stretched cluster to use the new vSAN witness.
- E. Configure the new vSAN witness as a shared witness appliance.
- F. Add the new vSAN witness appliance to vCenter Server.
正解：B、D、F
解説：
Add the appliance to vCenter Server as a witness ESXi host. Make sure to configure the vSAN VMkernel interface on the host.
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan-
planning.doc/GUID-05C1737A-5FBA-4AEE-BDB8-3BF5DE569E0A.html
質問 # 66
An architect is designing a vSAN cluster.
Which storage controller option will yield optimal performance?
- A. Enable battery write-back caching
- B. Set caching to 50% read on the controller
- C. Hugh queue depth
- D. RAID 0
正解：D
質問 # 67
An administrator would like to upgrade a stretched vSAN cluster to vSAN 7.0 U1. The following information is known about the vSAN cluster:
- vSAN Version: 6.7 U3
- Total number of vSAN data nodes: 12
- Encryption: Enabled
- vSAN Total Used Capacity: 30%
- Single Hardware Vendor
Where possible, the administrator wants to ensure the latest management capabilities are used in order to ensure that any future vSAN upgrades are supported with minimal additional effort.
In preparation, the administrator has completed the following task:
- Upgraded vCenter Server to vCenter Server 7.0 U1.
Which two additional steps must the administrator complete? (Choose two.)
- A. Upgrade the vSAN data nodes to vSphere 7.0 U1 using a vSphere Lifecycle Manager (vLCM) image.
- B. Upgrade the vSAN witness host appliance to vSphere 7.0 U1 using a vSphere Lifecycle Manager (vLCM) image.
- C. Upgrade the vSAN witness host appliance to vSphere 7.0 U1 using a vSphere Lifecycle Manager (vLCM) baseline.
- D. Disable vSAN Encryption before attempting any vSAN upgrade.
- E. Upgrade the vSAN data nodes to vSphere 7.0 U1 using a vSphere Lifecycle Manager (vLCM) baseline.
正解：A、C
質問 # 68
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. iSCSI on vSAN
- B. NFS on vSAN
- C. Cluster out of the box
- D. Cluster in a box
正解：B
解説：
Os independent is the requirements and High Availability. So vSAN 7 enable NFS and SMB on s SPBM cluster in wich Windows, Linux and MAC could have user profile with business continuity. Ref: https://core.vmware.com/blog/redirecting-user-profiles-and-data-using-fslogix-and-vsan-file-services
質問 # 69
A customer is planning to deploy a vSAN cluster to host their in-house distributed ERP system.
The hardware specifications for their server nodes include:
* 2 x Intel Xeon CPU E5-2697 v3 @ 2.60GHz
* 1TB memory
Which boot device is supported for the vSAN ESXi nodes for this customer?
- A. A 16GB multiple-level cell (MLC) SATADOM device must be used.
- B. ESXi Hosts must boot from a PMEM device.
- C. A 4GB USB or SD device must be used.
- D. A 16GB single-level cell (SLC) SATADOM device must be used.
正解：D
解説：
If the memory of the ESXi host has 512 GB of memory or less, you can boot the host from a USB, SD, or SATADOM device.
If the memory of the ESXi host has more than 512 GB, consider the following guidelines.
You can boot the host from a SATADOM or disk device with a size of at least 16 GB. When you use a SATADOM device, use a single-level cell (SLC) device.
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan-
planning.doc/GUID-B09CE19D-A3F6-408C-AE69-35F65CBE66E1.html
質問 # 70
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. Change the FTT setting in Policy 3 to be "Erasure Coding".
- B. Change the Site Disaster Tolerance setting in Policy 3 to be "Dual Site Mirroring".
- C. Update vSphere DRS site affinity rules so that Preferred Site workloads should not run on hosts in DC1.
- D. Update vSphere DRS site affinity rules so that Preferred Site workloads must run on hosts in DC2.
- E. Change the Site Disaster Tolerance setting in Policy 4 to be "None - Keep Data on Preferred".
正解：B、D
質問 # 71
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. Confirm on all of the requirements and move forward with the physical design.
- B. Point out the risks regarding putting the hosts in maintenance mode in terms of FSVM.
- 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.
正解：D
質問 # 72
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 performance will be degraded.
- C. The VMs will be in a suspended state.
- D. The VMs will no longer be accessible.
正解：A
質問 # 73
During a design workshop for a stretched vSAN cluster, the requirement that some of the VMs be configured with no-mirror between sites was discussed. Which three recommendations should the architect provide to address an event of a network partition between two sites? (Choose three.)
- A. One of isolation addresses should reside in the site 2 data center
- B. The default gateway must be used as the only isolation address
- C. VMware vSphere DRS rules to force the VMs to run where the data resides
- D. One of isolation addresses should reside in the site 1 data center
- E. Host isolation response must exclude the VMs required
- F. One isolation address reachable only from the witness appliance in both sites
正解：A、C、D
解説：
Network Isolation Response and Multiple Isolation Response Addresses
In a Virtual SAN Stretched Cluster, one of the isolation addresses should reside in the site 1 datacenter and the other should reside in the site 2 datacenter. This would enable vSphere HA to validate complete network isolation in the case of a connection failure between sites.
https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/techpaper/VMware-Virtual- SAN-6.1-Stretched-Cluster-Guide.pdf/subassets/page38.pdf
質問 # 74
An architect needs to automate an infrastructure that supports VMware Horizon as well as VMware Tanzu.
Which solution mandates the use of VMware vSAN?
- A. VMware Horizon
- B. VMware Cloud Foundation
- C. VMware vRealize Automation
- D. VMware Tanzu
正解：B
解説：
https://docs.vmware.com/en/VMware-Cloud-Foundation/3.10/vcf-deploy/GUID-E493608B-D4B6-
4C98-96CA-5D2D723ACE55.html
質問 # 75
Due to an update in their security requirements, an organization is no longer compliant because the metadata traffic between hosts in their vSAN cluster is not being encrypted.
Which step must be taken by the administrator to meet the new security requirements?
- A. Enable Data-In-Transit Encryption on the vSAN cluster.
- B. Enable Data-At-Rest Encryption on the vSAN cluster.
- C. Enable virtual machine encryption on the vSAN cluster.
- D. Enable vMotion encryption on the vSAN cluster.
正解：A
質問 # 76
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