[2023年12月17日] あなたを合格させる5V0-21.21無料最新問題集でVMware練習テスト
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質問 # 39
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. Create an HCI Mesh using the first cluster's datastore.
- B. Obtain additional free capacity from the existing NAS storage.
- C. Create an HCI Mesh using the second cluster's datastore.
- D. Obtain additional free capacity from the existing FC storage.
正解：C
解説：
https://blogs.vmware.com/virtualblocks/2020/09/16/introducing-vmware-vsan-hci-mesh/
質問 # 40
An administrator is setting up vSAN file services on a vSAN cluster.
Which two security policies on the distributed port groups are automatically enabled in the process? (Choose two.)
- A. Jumbo Frames
- B. Promiscuous Mode
- C. Forged Transmits
- D. MacLearning
- E. DVFiltering
正解：B、C
質問 # 41
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. Raise concerns regarding support when running VMs on an NFS share as risk.
- C. Highlight the required number of nodes required for the vSAN cluster as a constraint.
- D. Point out the risks regarding putting the hosts in maintenance mode in terms of FSVM.
正解：C
質問 # 42
While a vSAN administrator is deploying new VMs on a vSAN stretched cluster, the secondary site fails. The vSAN displays the following warning while trying to deploy those VMs:
'Datastore does not match current VM policy'.
Which step should be performed to provision the new VMs?
- A. Provision VMs with the 'Object space reservation' set to 50% reservation.
- B. Provision VMs with a vSAN Default Storage Policy.
- C. Provision VMs with 'Force Provisioning' rule enabled.
- D. Provision VMs with the 'Number of disk stripes per object' set to 2.
正解：C
質問 # 43
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. 400GB
- B. 800GB
- C. 700GB
- D. 600GB
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 # 44
An administrator wants to deploy Kubernetes on an end-to-end VMware stack, using VMware vSAN for storage.
Which VMware product should the administrator install as the Kubernetes platform choice?
- A. VMware Tanzu Data services
- B. VMware Tanzu Mission Control
- C. VMware Tanzu Kubernetes Grid
- D. VMware Tanzu Build service
正解：C
質問 # 45
As a part of a network hardware refresh project, all the network switches have been replaced with a newer, high-performance model. After the replacement, the company users started experiencing slowness on the applications hosted on their vSAN-backed VMs.
The vSAN administrator checked the vSAN Network Health status and noticed that the "Hosts large ping test" has failed.
What could be the cause of this performance degradation issue?
- A. MTU 9K is not configured on the hosts vSAN vMKernel ports.
- B. MTU 9K is not configured on the ToR switch.
- C. MTU 9K is not configured on the hosts VMnic ports.
- D. MTU 9K is not configured on the vDS switch.
正解：B
質問 # 46
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) baseline.
- B. Upgrade the vSAN witness host appliance to vSphere 7.0 U1 using a vSphere Lifecycle Manager (vLCM) baseline.
- C. Upgrade the vSAN witness host appliance to vSphere 7.0 U1 using a vSphere Lifecycle Manager (vLCM) image.
- 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) image.
正解：B、E
質問 # 47
Where would an administrator enable deduplication and compression in a vSAN environment?
- A. at the disk group level
- B. at the host level using ESXCLI commands
- C. at the object level using storage policies
- D. at the cluster level under vSAN services
正解：D
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 # 48
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. The VMs will be in a suspended state.
- B. There will be no impact on performance.
- C. The performance will be degraded.
- D. The VMs will no longer be accessible.
正解：B
質問 # 49
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 Full data migration maintenance mode option must be chosen to protect the data during the upgrade.
- B. The vSAN nodes should be upgraded to vSphere ESXi 7.0 U1.
- C. The vSAN nodes should be upgraded to vSphere ESXi 6.7 U3.
- D. The upgrade process should be completed using host upgrade baselines in VMware vSphere Lifecycle Manager (vLCM).
- E. The Ensure accessibility, migration maintenance mode option must be chosen to protect the data during the upgrade.
- F. The upgrade process should be completed using images in VMware vSphere Lifecycle Manager (vLCM).
正解：B、E、F
質問 # 50
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 increase available storage space
- B. To improve performance
- C. To set a failure tolerance
- D. To reconstruct corrupted data
正解：B
解説：
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/
質問 # 51
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 vRealize Automation
- C. VMware Tanzu
- D. VMware Cloud Foundation
正解：D
質問 # 52
An architect is designing a vSAN cluster.
Which storage controller option will yield optimal performance?
- A. RAID 0
- B. Enable battery write-back caching
- C. Hugh queue depth
- D. Set caching to 50% read on the controller
正解：C
質問 # 53
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 1 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 isolation address reachable only from the witness appliance in both sites
- E. One of isolation addresses should reside in the site 2 data center
- F. Host isolation response must exclude the VMs required
正解：C、E、F
質問 # 54
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