最新 [2024年08月23日] VMware 5V0-21.21リアル試験問題集PDF
5V0-21.21練習テスト問題は更新された68問題あります
質問 # 33
An administrator of "vsan-prod" cluster noticed the witness components of VMs are flagged as absent after a failed attempt to replace the vSAN Witness Host. Which action should the administrator take to resolve this issue?
- A. Placing the vSAN Witness Host in Maintenance Mode and adding to the vSAN cluster
- B. Using the RVC command: vsan.resync_dashboard ~/computers/vsan-prod
- C. Upgrading the vSAN on-disk format
- D. Running the vSAN Skyline Health check to ensure there are vSAN Object Health errors and executing the Repair Object Immediately option
正解：D
解説：
vSAN Witness Host (so there is strech cluster) must reside in vcenter datacenter container and not be added in vSAN cluster.
質問 # 34
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. Put the affected vSAN host into maintenance mode to physically replace the storage device.
- 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 Full Data Migration.
- F. Remove the affected Disk Group from the vSAN Cluster, and choose No Data Migration.
正解：A、C、D
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 # 35
During a vSAN design workshop, a customer expressed a requirement to decommission an existing enterprise NAS device that provides iSCSI services for a clustered application.
Based on the current state analysis, the following information was noted:
- Current utilization is 500 LUNs.
- All clustered workloads are configured for Multiple Connections per Session.
- LUN sizes range between 10 TB to 30 TB.
What should the architect state regarding the requirements?
- A. The number of LUNs require additional licensing.
- B. All requirements can be satisfied without any change.
- C. It is a best practice to maintain a LUN size of 8 TB.
- D. Only single connection per session is supported.
正解：D
解説：
https://kb.vmware.com/s/article/57344
質問 # 36
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 3 x 1.8 TB SSDs per vSAN node.
- B. Replace existing SSDs with an 800 GB SSD and 4 x 3.8 TB SSDs per vSAN node.
- C. Install an additional 400 GB SSD and 4 x 1.8 TB SSDs per vSAN node.
- D. Update the existing Disk Group, and claim the newly installed drives for each node.
- E. Create a new Disk Group, and claim the newly installed cache and capacity SSD drives for each node.
正解：C、E
解説：
Adding one cache disk and capacity disks, and create a new diskgroup.
質問 # 37
A 30-minute power maintenance window has been approved on Sunday. Due to a delay, the maintenance took 20 minutes longer to finish.
During this time, the vSAN administrator noticed that one of the clusters nodes was affected by a power shortage, as it was connected to an affected power source. The default vSAN storage policy has been applied.
What will be the status of the vSAN objects on the affected host immediately after it is recovered?
- A. The cluster will be partitioned and the vSAN host will need to be rejoined.
- B. All objects will remain accessible.
- C. All objects on the affected host will be lost.
- D. A rebuild of the affected objects will occur.
正解：D
質問 # 38
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 operations reserve.
A minimum cluster of 3 vSAN nodes. - B. Enable IOInsight Metrics.
A minimum cluster of 2 vSAN ROBO nodes. - C. Enable host build reserve.
A minimum cluster of 4 vSAN nodes. - D. Enable performance services.
A minimum cluster of 6 vSAN nodes.
正解：C
質問 # 39
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. The vSAN Resync throttling is enabled.
- B. There is a vSAN node failure.
- C. The object repair timer value has been increased.
- D. The vSAN policy protection level has changed from FTT=0 to FTT=1.
- E. The cluster DRS threshold has been set to Aggressive.
正解：B、D
解説：
High backend IOPS can be caused by rebuild/resync tasks.
https://core.vmware.com/resource/troubleshooting-vsan-performance#_Toc536646878
質問 # 40
An architect is tasked with implementing a solution that allows the creation of an active-active datacenter that leverages a vSAN Stretched Cluster. The requirement is to automate deployment with the least administrative efforts.
Which product meets this requirement?
- A. vRealize Automation
- B. VMware VVD
- C. VMware Cloud Foundation
- D. vRealize Orchestrator
正解：C
質問 # 41
An administrator is troubleshooting vSAN performance issues, and the performance diagnostics reports:
"There are errors seen in one or more physical NICs on one or more hosts." Which two problems must be resolved to fix this issue? (Choose two.)
- A. A firewall is blocking ports.
- B. The vSAN version needs to be upgraded to 7.0.
- C. A 25 Gb/s NIC needs to be installed.
- D. There are incompatible firmware and driver versions.
- E. There is an incorrectly set MTU.
正解：D、E
質問 # 42
An administrator has noticed that a number of the virtual machines in the preferred site are showing as either failed or partitioned.
In which two ways would the administrator expect the virtual machines to respond? (Choose two.)
- A. They will be restarted at the preferred site.
- B. They will be removed from inventory.
- C. They will be restarted in the secondary site.
- D. They will be powered off.
- E. They will be disconnected.
正解：C、D
解説：
https://core.vmware.com/resource/vsan-stretched-cluster-guide#site-failure-or-network-partitions
質問 # 43
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. Replace existing SSDs with an 800 GB SSD and 4 x 3.8 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 400 GB SSD and 4 x 1.8 TB SSDs per vSAN node.
- E. Install an additional 3 x 1.8 TB SSDs per vSAN node.
正解：C、E
質問 # 44
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. Select 'Erase disks before use' check box when enabling encryption on a vSAN cluster.
- B. Disable vSphere Distributed Resources Schedule (DRS) on the vSAN cluster.
- C. Ensure that the vSAN Encryption is enabled by default on the existing cluster to encrypt old and new data.
- D. Make vCenter Server trust the KMS, either by trusting the KMS or by uploading a KMS certificate.
正解：D
解説：
Reference:
You must have configured a standard key provider and established a trusted connection between vCenter Server and the KMS.
質問 # 45
An administrator is tasked with setting up a disaster recovery solution on top of a standard vSAN cluster in the first site and a separate standard vSAN cluster in the secondary site. Costs are a constraint and should be kept to the absolute minimum.
Which solution fits this use case best?
- A. SRM and VMware vSphere Replication
- B. Storage replication and SRM
- C. VMware vSphere Replication
- D. vSAN stretched cluster and VMware vSphere Replication
正解：C
質問 # 46
An architect is designing a vSAN cluster where the hosts have more than 512 GB of memory.
Which two boot devices are recommended for these hosts? (Choose two.)
- A. USB
- B. PMEM
- C. SD
- D. Disk Device
- E. SATADOM
正解：D、E
質問 # 47
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. Upgrade all vSAN nodes to VMware vSphere 7.0 U1 using the images capability within VMware Update Manager (VUM).
- B. Upgrade all vSAN nodes to VMware vSphere 7.0 U1 using the baselines capability within VMware Update Manager (VUM).
- C. Set VMware Distributed Resource Scheduling (DRS) to partially automated.
- D. Upgrade to VMware vCenter Server 7.0 U1.
- E. Choose the Allow reduced redundancy option.
- F. Disable vSAN Encryption before starting the upgrade process.
正解：B
質問 # 48
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. Replace the failed disk with a storage device that is identical in class and capacity.
- D. Remove the affected Disk Group from the vSAN Cluster, and choose Full Data Migration.
- E. Put the affected vSAN host into maintenance mode to physically replace the storage device.
- F. Remove the affected Disk Group from the vSAN Cluster, and choose No Data Migration.
正解：A、C、D
質問 # 49
A customer has upgraded to vSAN 7, but there is still an existing legacy host which must be removed from the vSAN cluster.
Which three steps must an administrator take to successfully remove this host from the vSAN cluster? (Choose three.)
- A. Remove from vSAN cluster
- B. Place the host in maintenance mode with Full Data migration
- C. Place the host in maintenance mode with no data migration
- D. Delete the disk group(s) on the legacy host
- E. Disconnect from vCenter Server
- F. Place the host in maintenance mode with Ensure Accessibility
正解：A、B、D
質問 # 50
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 Tanzu
- B. VMware Cloud Foundation
- C. VMware vRealize Automation
- D. VMware Horizon
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 # 51
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. Highlight the required number of nodes required for the vSAN cluster as a constraint.
- C. Raise concerns regarding support when running VMs on an NFS share as risk.
- D. Point out the risks regarding putting the hosts in maintenance mode in terms of FSVM.
正解：C
解説：
https://core.vmware.com/resource/vsan-frequently-asked-questions-faq#section5
質問 # 52
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 # 53
An architect is designing a vSAN cluster where the hosts have more than 512 GB of memory.
Which two boot devices are recommended for these hosts? (Choose two.)
- A. USB
- B. PMEM
- C. SD
- D. Disk Device
- E. SATADOM
正解：D、E
解説：
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-07EFD36A-F844-4E7D-830D-3863E4AA617C.html#:~:text=Size%20the%20memory%20and%20the,based%20on%20the%20following%20considerations.&text=Hosts%20that%20have%20512%2DGB,a%20SATADOM%20or%20disk%20device..
質問 # 54
A vSAN administrator notices that all the applications on a vSAN cluster are suffering from performance degradation. The main applications on this cluster are very random write-intensive and generate a lot of i/o. De-staging seems to be going awfully slow.
Given the following information:
- Each host has a single disk group.
- Each disk group has 7 capacity disks.
- The size of each cache disk is 600 GB.
How should the administrator solve this problem?
- A. Add additional disk groups
- B. Increase the size of cache disks
- C. Add more cache disks
- D. Add more capacity disks
正解：B
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.Migrate" is assigned
- B. Verify if a role with privilege "Cryptographic operations.Encrypt new" is assigned
- C. Establish a trusted connection with the KMS
- D. Enable that the virtual machines are powered on
- E. Enable Data-In-Transit encryption first
- F. Create an encryption storage policy
正解：B、C、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
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