[2022年03月22日]5V0-21.21PDF問題とテストエンジンには52問があります
更新された試験エンジンは5V0-21.21試験無料お試しサンプル365日更新されます
VMware 5V0-21.21 認定試験の出題範囲：
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質問 20
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. 800GB
- C. 600GB
- D. 400GB
正解: B
質問 21
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. Enable that the virtual machines are powered on
- B. Verify if a role with privilege "Cryptographic operations.Encrypt new" is assigned
- C. Establish a trusted connection with the KMS
- D. Enable Data-In-Transit encryption first
- E. Create an encryption storage policy
- F. Verify if a role with privilege "Cryptographic operations.Migrate" is assigned
正解: A,B,C
質問 22
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 host build reserve.
A minimum cluster of 4 vSAN nodes. - B. Enable IOInsight Metrics.
A minimum cluster of 2 vSAN ROBO nodes. - C. Enable performance services.
A minimum cluster of 6 vSAN nodes. - D. Enable operations reserve.
A minimum cluster of 3 vSAN nodes.
正解: A
質問 23
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 vRealize Automation
- B. VMware Tanzu
- C. VMware Cloud Foundation
- D. VMware Horizon
正解: A
質問 24
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 performance service is turned off.
- B. vSAN proactive tests haven't been run yet.
- C. vSAN network diagnostic mode is not enabled.
- D. vSAN performance verbose mode is not enabled.
正解: A
解説:
Some tools allow for measuring latency peaks. This unfortunately isn't ideal, as it can unfairly represent statistical outliers, which may very well occur when there is little to no I/O activity. The best way to understand the actual behavior of VM and application latencies is to observe in time based performance graphs. Depending on the level of detail, you may need to measure at the individual VMDK level. Become familiar with these graphs to determine what is normal, and what is not for that given application. This is where you can use built-in functionality of vCenter and the vSAN performance service metrics to gather this information.
質問 25
A company has engaged a consultant to upgrade an existing vSAN cluster to vSAN 7.0 U1.
During the discovery phase, the consultant found the following information about the existing environment:
* The VMware vCenter Server has recently been upgraded from VMware vSphere 6.7 U3 to version 7.0 U1.
* The vSAN Cluster was recently expanded with identical hardware specification, but from a different hardware vendor.
* The hardware for each vSAN node is listed on the vSAN Compatibility Guide (VCG) for vSAN 7.
* The vSAN Cluster has the following configuration:
- vSAN version: 6.6.1
- Number of vSAN nodes: 10
- Encryption: enabled
- Deduplication and Compression: enabled
- vSAN Capacity Utilization: 60%
* Each vSAN node has the following configuration:
- VMware vSphere ESXi version: 6.5 Update 3
- CPU: 2 processors, 20 cores
- RAM: 768GB RAM.
- Disk: 2 Cache SSDs and 6 Capacity SSDs
- Network: 4 x 10GbE
Which three recommendations should the consultant make to ensure all data remains protected in the event of a vSAN failure? (Choose three.)
- A. The upgrade process should be completed using images in VMware vSphere Lifecycle Manager (vLCM).
- B. The vSAN nodes should be upgraded to vSphere ESXi 7.0 U1.
- C. The Ensure accessibility, migration maintenance mode option must be chosen to protect the data during the upgrade.
- D. The Full data migration maintenance mode option must be chosen to protect the data during the upgrade.
- E. The upgrade process should be completed using host upgrade baselines in VMware vSphere Lifecycle Manager (vLCM).
- F. The vSAN nodes should be upgraded to vSphere ESXi 6.7 U3.
正解: A,B,C
質問 26
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 NAS storage.
- B. Create an HCI Mesh using the second cluster's datastore.
- C. Create an HCI Mesh using the first cluster's datastore.
- D. Obtain additional free capacity from the existing FC storage.
正解: A
質問 27
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. Enable battery write-back caching
- D. Hugh queue depth
正解: A
質問 28
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. Running the vSAN Skyline Health check to ensure there are vSAN Object Health errors and executing the Repair Object Immediately option
- B. Using the RVC command: vsan.resync_dashboard ~/computers/vsan-prod
- C. Placing the vSAN Witness Host in Maintenance Mode and adding to the vSAN cluster
- D. Upgrading the vSAN on-disk format
正解: C
質問 29
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. Write endurance
- B. IOPS
- C. Read endurance
- D. Capacity
正解: A
質問 30
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 baselines capability within VMware Update Manager (VUM).
- B. Upgrade all vSAN nodes to VMware vSphere 7.0 U1 using the images capability within VMware Update Manager (VUM).
- C. Disable vSAN Encryption before starting the upgrade process.
- D. Upgrade to VMware vCenter Server 7.0 U1.
- E. Set VMware Distributed Resource Scheduling (DRS) to partially automated.
- F. Choose the Allow reduced redundancy option.
正解: A
質問 31
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. Establish a trusted connection with the KMS
- C. Enable Data-In-Transit encryption first
- D. Enable that the virtual machines are powered on
- E. Create an encryption storage policy
- F. Verify if a role with privilege "Cryptographic operations.Migrate" is assigned
正解: A,B,E
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 32
An administrator is planning to deploy workloads on a six node vSAN cluster, and all nodes are distributed equally across three racks.
Which action is required to ensure that the workload VMs remain compliant with the default vSAN policy after a complete rack failure?
- A. Add two additional hosts per rack, and configure vSAN with three fault domains and FTT=1.
- B. Add an additional rack with two hosts, and configure vSAN with four fault domains and FTT=1 (mirroring).
- C. Add an additional rack with two hosts, and configure vSAN with four fault domains and FTT=1 (erasure coding).
- D. Add an additional host per rack, and configure vSAN with three fault domains and FTT=2.
正解: B
質問 33
An administrator is tasked with preparing for a Cross vCenter migration in a stretched vSAN cluster where the virtual machines migration will be orchestrated via VMware Site Recovery Manager.
Which action should the administrator take so the migration is successful?
- A. Reconfigure vCenter HA Admission control
- B. Enable vCenter Single Sign-On Enhanced Linked Mode
- C. Disable vSAN Deduplication and Compression
- D. Make sure that Witness traffic is on the management NIC.
正解: B
質問 34
cluster 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. 800GB
- C. 600GB
- D. 400GB
正解: B
解説:
40GB x 1000VMs = 40 000 GB total max expected usage 40 000GB / 5 node cluster = 8000 GB per node cache should be 10% so 800GB SSD is needed. However this question is stupid from real life perspective. one host can run up to 200 VMs - so what with MM, any failure ? Cluster should be sized with 6 ESXi hosts minumim
質問 35
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. SFTT = 1
- B. PFTT = 0
- C. PFTT = 1
- D. SFTT = 0
正解: B
解説:
PFTT can be seen as "site failures", and you can always only tolerate 1 at most. SFTT can be seen as host failures, and you can define this between 0 and 3 https://www.yellow-bricks.com/2018/03/19/vsan-stretched-cluster-pftt-and-sftt-what-happens-when-a-full-site-fails-and-multiple-hosts-fail/
質問 36
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 in a box
- C. NFS on vSAN
- D. Cluster out of the box
正解: A
質問 37
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 Apps
- B. VMware Workspace One Access
- C. VMware Dynamic Environment Manager
- D. VMware Horizon
正解: D
質問 38
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 Resync Throttling
- B. Setting the vSAN policy's IOPS limit for object value to 0 (unlimited)
- C. Enabling automatic rebalance
- D. Enabling Maintenance mode with no data evacuation
正解: A
質問 39
An administrator is planning to deploy cloud-native workloads onto the vSAN Direct datastore.
Which storage policy structure rule is supported?
- A. Host-based rules
- B. vVOL storage rules
- C. Storage performance-based rules
- D. Tag-based placement rules
正解: D
解説:
https://docs.vmware.com/en/VMware-vSphere/7.0/vmware-vsphere-with-tanzu/GUID-40E5FD5C-E9A0-4D6D-8429-0DD5FE5F0E9F.html
https://4sysops.com/archives/how-to-configure-vmware-vsan-direct-on-vsphere-7-u1/
質問 40
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. Remove the affected Disk from the Disk Group, and choose Full Data Migration.
- C. Replace the failed disk with a storage device that is identical in class but smaller in capacity.
- 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: A,B,D
質問 41
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