Practice Test for 5V0-21.21 Certification Real 2022 Mock Exam
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NEW QUESTION 29
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 dat a. Both vSAN clusters are managed by the same vCenter server.
What should the administrator configure?
- A. HCI Mesh on vSAN
- B. vVOLs on vSAN
- C. iSCSI targets on vSAN
- D. NFS volumes on vSAN
Answer: A
NEW QUESTION 30
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. Tag the vmk0 for vSAN traffic.
- C. Configure vmk0 with IP address on the same range as that of vmk1.
- D. Configure vmk1 with IP address on the different network than that of vmk0.
Answer: D
NEW QUESTION 31
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 network diagnostic mode is not enabled.
- B. vSAN proactive tests haven't been run yet.
- C. vSAN performance service is turned off.
- D. vSAN performance verbose mode is not enabled.
Answer: C
Explanation:
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.
NEW QUESTION 32
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 = 1
- C. SFTT = 0
- D. PFTT = 0
Answer: D
Explanation:
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/
NEW QUESTION 33
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. Put the affected vSAN host into maintenance mode to physically replace the storage device.
- B. Remove the affected Disk Group from the vSAN Cluster, and choose No Data Migration.
- 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. Replace the failed disk with a storage device that is identical in class but smaller in capacity.
- F. Remove the affected Disk from the Disk Group, and choose Full Data Migration.
Answer: A,D,F
Explanation:
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
NEW QUESTION 34
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 automatic rebalance
- B. Enabling Maintenance mode with no data evacuation
- C. Setting the vSAN policy's IOPS limit for object value to 0 (unlimited)
- D. Enabling Resync Throttling
Answer: D
NEW QUESTION 35
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
Answer: A
NEW QUESTION 36
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. Create an encryption storage policy
- D. Enable that the virtual machines are powered on
- E. Enable Data-In-Transit encryption first
- F. Verify if a role with privilege "Cryptographic operations.Migrate" is assigned
Answer: A,B,C
Explanation:
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
NEW QUESTION 37
Which statement accurately describes the result when proper VM Storage Policy Affinity Rules on a stretched vSAN cluster are set?
- A. When a site is disconnected, the VM will lose access to its VMDK.
- B. Proper policies result in higher inter-site bandwidth utilization.
- C. Bandwidth is unnecessarily sent across the inter-site link.
- D. When a site is disconnected, the VM will continue to have access to its VMDK.
Answer: D
NEW QUESTION 38
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. 800GB
- B. 700GB
- C. 600GB
- D. 400GB
Answer: A
Explanation:
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
NEW QUESTION 39
Upon checking the latency goal under vSAN performance diagnostics, the vSAN Administrator sees this message displayed:
The increase in latency in the vSAN stack might be beyond expected limits.
Which two root causes can be identified to help remediate the issue? (Choose two.)
- A. vSAN VMKemel portgroup is configured with the "Route based on IP hash" teaming policy
- B. vSAN encryption is enabled
- C. Incorrect sizing of the disk groups capacity disks
- D. One or more disk groups are congested
- E. Large packet losses and retransmissions on the network layer
Answer: D,E
NEW QUESTION 40
A customer is planning to migrate their physical Microsoft SQL Server clustered workloads to vSAN enabled vSphere clusters.
The following requirements must be met:
* Each MSSQL cluster is made up of 3 nodes
* Highest possible availability against node failures
* Some of the vSAN clusters will only consume storage
What should the architect recommend?
- A. vSAN File Services
- B. vSAN Direct
- C. Stretched vSAN Cluster
- D. vSAN iSCSI Target Service
Answer: D
Explanation:
Reference:
vSAN 6.7 expands the functionality of the vSAN iSCSI Target service to provide the SCSI-3 persistent reservations support for shared disks for windows failover cluster if using the SQL Server FCI, high availability mode is a requirement. The vSAN iSCSI Target service at the vSAN cluster level should be enabled for this purpose. VSAN streched cluster may be used to increase the data availability across data centres. https://blogs.vmware.com/virtualblocks/2019/03/26/considerations-for-running-microsoft-sql-server-workloads-on-vmware-vsan/
NEW QUESTION 41
An architect collected the below technical requirements from the customer during a vSAN cluster design workshop:
* Maximize the vSAN datastore usable capacity.
* Deduplication and compression are required to help utilize available capacity efficiency.
* Ensure the highest level of resiliency wherever possible.
Which disk group configuration should the architect include in the design?
- A. Two disk groups per host, each with one cache tier flash disk and six capacity tier magnetic disks.
- B. Two disk groups per host, each with one cache tier flash disk and six capacity tier flash disks.
- C. One disk group per host, with one cache tier flash disk and four capacity tier flash disks.
- D. Two disk groups per host, each with one cache tier flash disk and four capacity tier flash disks.
Answer: B
NEW QUESTION 42
A customer is planning to migrate their physical Microsoft SQL Server clustered workloads to vSAN enabled vSphere clusters.
The following requirements must be met:
* Each MSSQL cluster is made up of 3 nodes
* Highest possible availability against node failures
* Some of the vSAN clusters will only consume storage
What should the architect recommend?
- A. vSAN File Services
- B. vSAN Direct
- C. Stretched vSAN Cluster
- D. vSAN iSCSI Target Service
Answer: D
NEW QUESTION 43
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 = 1
- C. SFTT = 0
- D. PFTT = 0
Answer: C
NEW QUESTION 44
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. Make sure that Witness traffic is on the management NIC.
- B. Disable vSAN Deduplication and Compression
- C. Reconfigure vCenter HA Admission control
- D. Enable vCenter Single Sign-On Enhanced Linked Mode
Answer: D
NEW QUESTION 45
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. Read endurance
- C. IOPS
- D. Capacity
Answer: A
NEW QUESTION 46
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 host build reserve.
A minimum cluster of 4 vSAN nodes. - C. Enable operations reserve.
A minimum cluster of 3 vSAN nodes. - D. Enable IOInsight Metrics.
A minimum cluster of 2 vSAN ROBO nodes.
Answer: B
NEW QUESTION 47
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