無料でゲット！2023年最新のに更新されたVMware 5V0-21.21試験問題と解答
5V0-21.21問題集PDFとテストエンジン試験問題
VMware 5V0-21.21認定を獲得することで、専門家がIT業界でのキャリアを促進するのに役立ちます。 VMwareのVSAN HCIテクノロジーの高レベルの専門知識を示しています。これは、データセンターの近代化を検討している組織の間でますます人気が高まっています。また、この認定は、世界中の雇用主によって認識され尊重されているため、より高い給与とより多くの雇用機会につながる可能性があります。
質問 # 54
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 data. Both vSAN clusters are managed by the same vCenter server.
What should the administrator configure?
- A. NFS volumes on vSAN
- B. iSCSI targets on vSAN
- C. vVOLs on vSAN
- D. HCI Mesh on vSAN
正解：D
解説：
HCI Mesh is a unique, software-based approach for disaggregation of compute and storage resources. HCI Mesh brings together multiple independent vSAN clusters for a native, cross- cluster architecture that disaggregates resources and enables utilization of stranded capacity.
Simply, vSAN allows one or more vSAN clusters to remotely mount datastores from other vSAN clusters (servers) within vCenter inventory. This approach maintains the essence and simplicity of HCI by not fundamentally changing the existing HCI model or requiring specialized hardware.
Now, a cluster with excess compute can mount excess storage from a remote vSAN cluster.
質問 # 55
A faulty disk was not cleanly removed from the vSAN cluster when being replaced.
Which action should be taken to resolve the problem and restore the vSAN cluster to a healthy state?
- A. Reboot the host to clear the lock.
- B. Ignore the errors, and add the new disk into the disk group.
- C. Rescan the SCSI adapter to clear the lock.
- D. Delete and recreate the disk group.
正解：D
質問 # 56
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. Capacity
- D. Write endurance
正解：D
解説：
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
質問 # 57
Following the deployment of a new all-flash vSAN 7.0 U1 stretched cluster, an administrator has been tasked with decommissioning the existing hybrid vSAN 6.7 U3 stretched cluster since the hardware is becoming end-of-life. In addition to Virtual Machine storage, the hybrid vSAN cluster also provides iSCSI target services.
The administrator has completed the following tasks:
- All workloads have been successfully migrated to the new vSAN stretched cluster.
- The iSCSI target service has been enabled on the new vSAN stretched cluster.
Which three additional tasks should the administrator complete to properly decommission the hybrid vSAN stretched cluster and ensure that all data is removed? (Choose three.)
- A. Convert the vSAN stretched cluster into a vSAN standard cluster.
- B. Run the Wipe-Disk PowerCLI command to securely wipe any data.
- C. Disable vSAN File Services.
- D. Disable the vSAN performance service.
- E. Ensure all data has been evacuated from the vSAN cluster.
- F. Remove any disk groups before decommissioning the vSAN data nodes.
正解：B、E、F
質問 # 58
A vSAN cluster recently experienced a network partition due to a major network outage. The system administrator noticed that:
- The virtual machines running on the vSAN cluster remained powered on all hosts.
- When the network was restored, some VMs were duplicated between the different ESXi hosts.
What should the administrator check to prevent this from happening again?
- A. vSphere DRS Advanced Parameters
- B. vSphere HA Admission Control
- C. Proactive HA Failures and Responses
- D. vSphere HA Advanced Parameters
正解：D
質問 # 59
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. Cluster in a box
- D. NFS on vSAN
正解：D
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 # 60
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. Highlight the required number of nodes required for the vSAN cluster as a constraint.
- D. Raise concerns regarding support when running VMs on an NFS share as risk.
正解：C
質問 # 61
In a vSAN stretched cluster, which value must be set in the vSAN policy if there is no requirement for data mirroring across sites?
- A. PFTT = 1
- B. SFTT = 0
- C. PFTT = 0
- D. SFTT = 1
正解：C
解説：
Primary level of failures to tolerate (PFTT). For stretched clusters, PFTT defines the number of site failures that a virtual machine object can tolerate. For a stretched cluster, only a value of 0 or
1 is supported.
Secondary level of failures to tolerate (SFTT). For stretched clusters, SFTT defines the number of additional host failures that the object can tolerate after the number of site failures defined by PFTT is reached. If PFTT = 1 and SFTT = 2, and one site is unavailable, then the cluster can tolerate two additional host failures.
The default value is 0, and the maximum value is 3.
So data mirroring across sites = PFTT
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan-
planning.doc/GUID-1BDC7194-67A7-4E7C-BF3A-3A0A32AEECA9.html
質問 # 62
An administrator wants to check the performance metrics for the workloads and their virtual disks that are running on a vSAN cluster, but no statistical charts are displayed in the vSphere client.
Why is this behavior being seen?
- A. vSAN proactive tests haven't been run yet.
- B. vSAN performance verbose mode is not enabled.
- C. vSAN network diagnostic mode is not enabled.
- D. vSAN performance service is turned off.
正解：D
解説：
Prerequisites
The vSAN performance service must be turned on before you can view performance charts.
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan-
monitoring.doc/GUID-EF27701E-7BAC-4E76-9D2F-E1C58CAAB06D.html
質問 # 63
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. Create a new Disk Group, and claim the newly installed cache and capacity SSD drives for each node.
- B. Install an additional 400 GB SSD and 4 x 1.8 TB SSDs per vSAN node.
- C. Replace existing SSDs with an 800 GB SSD and 4 x 3.8 TB SSDs per vSAN node.
- D. Install an additional 3 x 1.8 TB SSDs per vSAN node.
- E. Update the existing Disk Group, and claim the newly installed drives for each node.
正解：A、D
質問 # 64
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 IOInsight Metrics.
A minimum cluster of 2 vSAN ROBO nodes. - B. Enable host build reserve.
A minimum cluster of 4 vSAN nodes. - C. Enable operations reserve.
A minimum cluster of 3 vSAN nodes. - D. Enable performance services.
A minimum cluster of 6 vSAN nodes.
正解：B
質問 # 65
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 Site Disaster Tolerance setting in Policy 4 to be "None -Keep Data on Preferred".
- B. Change the FTT setting in Policy 3 to be "Erasure Coding".
- C. Change the Site Disaster Tolerance setting in Policy 3 to be "Dual Site Mirroring".
- D. Update vSphere DRS site affinity rules so that Preferred Site workloads must run on hosts in DC2.
- E. Update vSphere DRS site affinity rules so that Preferred Site workloads should not run on hosts in DC1.
正解：C、D
解説：
A: to replicate VMs on second site
E: to move compute for those VMs on second site
質問 # 66
An administrator wants to deploy a desktop and application virtualization solution on top of vSAN.
Which VMware product should the administrator install?
- A. VMware Horizon
- B. VMware Dynamic Environment Manager
- C. VMware Horizon Apps
- D. VMware Workspace One Access
正解：A
解説：
Reference: https://www.vmware.com/products/horizon/horizon-vsan.html
質問 # 67
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. krb5p
- B. krb5i
- C. krb5
- D. krb4
正解：B
質問 # 68
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 the vSAN Witness Host
- B. Replace only one failed disk on the preferred site.
- C. Replace access to the existing vSAN Witness Host
- D. Replace all failed disks on the preferred site.
正解：C
質問 # 69
Which three steps are required to decommission a stretched cluster and convert it to a standard vSAN cluster? (Choose three.)
- A. Delete the witness host VM
- B. Remove the Fault Domain configuration
- C. Reinstall the ESXi hosts
- D. Remove the vSAN partition schema on the disk groups
- E. Disable and remove the stretched cluster
- F. Repair the cluster objects
正解：B、E、F
解説：
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan-
planning.doc/GUID-1D3FE3B4-1BFE-4B0E-BDC3-3D388D2BEF61.html
質問 # 70
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. 100% of the reads comes from vSAN hosts on the local site
- D. 50% of the reads comes from vSAN hosts on the remote site
正解：C
質問 # 71
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?
- A. esxcli vsan cluster get
- B. esxcli vsan health cluster list
- C. esxcli vsan errands timemachine get
- D. esxcli vsan storage list
正解：B
解説：
esxcli vsan health cluster list command lists out the status of the each of the health test name for the vsan cluster.
http://www.vmwarearena.com/manage-vmware-vsan-using-esxcli-vsan-commands/
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan-
monitoring.doc/GUID-7799D2D7-2513-4372-92EA-4A1FB510E012.html
質問 # 72
Where would an administrator enable deduplication and compression in a vSAN environment?
- A. at the cluster level under vSAN services
- B. at the host level using ESXCLI commands
- C. at the object level using storage policies
- D. at the disk group level
正解：A
解説：
Consider these guidelines when you configure deduplication and compression in a vSAN cluster.
- Deduplication and compression are available only on all-flash disk groups.
- On-disk format version 3.0 or later is required to support deduplication and compression.
- You must have a valid license to enable deduplication and compression on a cluster.
- When you enable deduplication and compression on a vSAN cluster, all disk groups participate in data reduction through deduplication and compression.
You can enable deduplication and compression when you configure a new vSAN all-flash cluster.
質問 # 73
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：D
解説：
As 4 Node Eraser code is RAID 5 and can only tolerate one host offline, so if 2nd one fails then Some VMs will be inaccessible depending where the components are and once the host in maintenance mode is back online then depending if all components of vms are there then become accessible.
質問 # 74
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 IOInsight Metrics.
A minimum cluster of 2 vSAN ROBO nodes. - B. Enable host build reserve.
A minimum cluster of 4 vSAN nodes. - C. Enable operations reserve.
A minimum cluster of 3 vSAN nodes. - D. Enable performance services.
A minimum cluster of 6 vSAN nodes.
正解：B
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 # 75
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