[Aug-2021] 5V0-21.20 Pre-Exam Practice Tests | Exam Questions and Answers for Master Specialist HCI 2020 Study Guide
VMware HCI Master Specialist Certification Sample Questions
NEW QUESTION 27
An All-Flash vSAN cluster has 4-nodes with this disk group composition on each host:
* 1 x 800 GB SAS SSD
* 6 x 3.84 TB SATA SSD
An administrator observes that in an All-Flash cluster, the Write
Buffer Free Percentage is consistently low. As a result there is increased latency experienced by the workloads.
Which remediation steps will resolve this issue?
- A. Add a second disk group with a new cache device and distribute the capacity disks equally.
- B. Add a second cache device to the same disk group to increase the caching size.
- C. Replace the existing cache device with a larger cache device.
- D. Modify advanced vSAN configuration parameters to utilize the complete 800 GB for caching.
Answer: B
NEW QUESTION 28
A failed storage controller has two vSAN disk groups attached. The components contained on the dnves in those disk groups are marked Degraded. vSAN reports that some objects do not comply with their assigned storage policy.
How is the compliance issue resolved?
- A. Degraded components are repaired after CLOM Repair Delay Timer expires.
- B. Rebuilding of the degraded components starts immediately.
- C. Initiate a proactive rebalance to force component repairs.
- D. Storage policies must be reapplied to all affected objects.
Answer: B
NEW QUESTION 29
Three-months ago, an administrator deployed vReahze Operations Manager from vCenter to manage his newly deployed four-node vSAN 6.7 All-Flash cluster. What must the administrator do to continue using vRealize Operations Dashboards for vSAN?
- A. Reconfigure the vSAN cluster.
- B. Apply the correct license to the vSAN cluster.
- C. Reconfigure the vRealize Operations Manager.
- D. Upgrade vRealize Operation Manager.
Answer: B
NEW QUESTION 30
Refer to the exhibit.
An administrator is managing a 4-node, hybrid vSAN cluster. One of the hosts in the cluster went offline.
Referencing the information displayed in the section of the vSAN UI, what is the current state of this cluster?
- A. Objects will be resynchronized when the Object Repair Timer expires.
- B. Resync Throttling has caused data resynchronization scheduling.
- C. Metadata resynchronization is scheduled to occur every 60 minutes.
- D. Offline host reconnected to the cluster and all objects are synchronized.
Answer: C
NEW QUESTION 31
Which Kubernetes component must be configured to allow for dynamics provisioning of container volumes on vSAN?
- A. vSphere Cloud Storage Plugin
- B. vSphere Container Storage Interface driver
- C. Cinder
- D. glusterfs
Answer: B
Explanation:
Explanation/Reference: https://docs.vmware.com/en/VMware-vSphere/6.7/Cloud-Native-Storage/GUID-AD5AE35E-5209-
4775-988C-F86D0E4F0C29.html
NEW QUESTION 32
Which two statements are true about a vSAN Cluster when the vCenter Server managing it is offline? (Choose two.)
- A. vSAN continues to operate, but vSAN performance metrics will be lost.
- B. Use a Web browser to monitor vSAN through the vSphere Host Client.
- C. Manage and view vSAN health information using RVC commands.
- D. vSAN continues to operate and all VMs inherit the default vSAN storage policy.
- E. vSAN health information is available through esxcli commands.
Answer: A,C
NEW QUESTION 33
What is the key factor when sizing the Witness Host for a vSAN Stretched Cluster?
- A. number of maximum components supported
- B. size of the cache tier within the witness appliance
- C. number of vCPUs within the Witness appliance
- D. size of the ESXi boot drive to account for metadata
Answer: C
NEW QUESTION 34
An administrator wants to orchestrate the update of the controller driver and firmware in a vSAN cluster.
Which is a required step when using VMware vSphere Update Manager and vSAN Health Service to perform the updates?
- A. Manually create a vSAN system baseline.
- B. Install a vendor tool for the controller.
- C. Ensure all controllers are in pass-through mode.
- D. Upload an OEM provided vSphere ISO.
Answer: A
NEW QUESTION 35
A vSAN all-flash environment with these host specifications has reported high network latency, write latency, and faces degraded performance:
* One 1Gbps (vSAN, vMotion Traffic)
* One 1Gbps (Management, Fault Tolerance traffic)
Based on the specifications of each host, what is recommended to resolve the issue?
- A. collapse all traffic into one 1Gbps NIC
- B. change MTU to 9000
- C. change stripe width to 12
- D. collapse all traffic shared under two 10Gbps NICs
Answer: D
NEW QUESTION 36
Which must be configured by a Kubernetes user allow for dynamic provisioning of container volumes in vSAN using storage policies?
- A. StorageClass
- B. ReplicaSet
- C. ReplicationController
- D. Pod
Answer: A
NEW QUESTION 37
An administrator is designing a network for a vSAN cluster.
What is the recommendation for the cluster's network configuration?
- A. Create separate distributed switches for Management, vSAN, and vMotion.
- B. Create separate VMkernel ports for Management, vSAN, and vMotion.
- C. Set shares within Network I/O Control (NIOC) to prefer vMotion traffic over vSAN traffic.
- D. Set the Multicast filtering mode in the virtual distributed switch to IGMP/MLD snooping.
Answer: B
NEW QUESTION 38
Which must be configured by a Kubernetes user allow for dynamic provisioning of container volumes in vSAN using storage policies?
- A. StorageClass
- B. ReplicaSet
- C. ReplicationController
- D. Pod
Answer: A
Explanation:
Explanation/Reference: https://vmware.github.io/vsphere-storage-for-kubernetes/documentation/policy-based-mgmt.html
NEW QUESTION 39
An infrastructure architect is submitting a proposal for a vSAN Cluster. These are the customer's requirements:
*Maximize the amount of usable capacity.
*Deduplication and compression will be enabled to help maximize usable capacity.
Which disk group configuration should the architect include in their design?
- A. Three disk groups with one flash device for cache and two flash devices for capacity per disk group.
- B. Five disk groups with one flash device for cache and one magnetic device for capacity per disk group.
- C. One disk group with one flash device for cache and six magnetic devices for capacity.
- D. One disk group with one flash device for cache and six flash devices for capacity.
Answer: C
NEW QUESTION 40
An infrastructure architect is submitting a proposal for a vSAN Cluster. These are the customer's requirements:
*Maximize the amount of usable capacity.
*Deduplication and compression will be enabled to help maximize usable capacity.
Which disk group configuration should the architect include in their design?
- A. Three disk groups with one flash device for cache and two flash devices for capacity per disk group.
- B. Five disk groups with one flash device for cache and one magnetic device for capacity per disk group.
- C. One disk group with one flash device for cache and six magnetic devices for capacity.
- D. One disk group with one flash device for cache and six flash devices for capacity.
Answer: A
NEW QUESTION 41
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 storage list
- C. esxcli vsan errands timemachine get
- D. esxcli vsan health cluster list
Answer: A
NEW QUESTION 42
A vSAN administrator wants to implement end-to-end prioritization of vSAN traffic across the network in a shared network infrastructure that is using vSphere Distributed Switches (VDS).
Which two can help achieve this objective? (Choose two.)
- A. Configure CoS or DSCP with high priority tag at the VDS and equivalent in the physical network.
- B. Enable network resource pool at the VDS level to prioritize vSAN traffic
- C. Configure multiple vSAN VMkernel interfaces to load balance across multiple uplinks.
- D. Enable jumbo frames for vSAN VMkernel ports and configure LACP for optimal load balancing.
- E. Enable Network I/O Control and allocate higher shares for vSAN traffic.
Answer: D,E
NEW QUESTION 43
During planned maintenance of a four-node vSAN cluster, an outsourced IT contractor accidentally removed a
2.5" SSD cache disk from one of the vSAN nodes. The storage policy has been configured with FTT=1 RAID
1, and the disk management UI marked the disk group as
Which remediation steps should the administrator select to ensure VMs become compliant with the storage policy as soon as possible?
- A. remove disk group > enter host in maintenance > fully evacuate all data > exit maintenance
- B. replace the SSD cache disk > rescan > add disk back in disk group
- C. vSAN Health Check > retest > object health > repair objects immediately
- D. enter host in maintenance > remove from disk group > shutdown host > replace disk > power on host
Answer: B
NEW QUESTION 44
Which step can be avoided when replacing a capacity tier device on a controller with passthrough mode and support for hot-plug?
- A. Add the new disk to the disk group.
- B. Replace the physical drive.
- C. Remove the disk from the disk group.
- D. Shut down the host.
Answer: B
NEW QUESTION 45
Refer to the exhibit.
A vSAN Cluster stretched across Data Site 1 and Data Site 2 has a vSAN data network configured with an MTU of 9000. The witness node has been placed in a remote site across a WAN with an MTU of 1500. The vSAN health check, 'vSAN: MTU check (ping with large packet size)', reports a failed ping.
What two actions could resolve the issue? (Choose two.)
- A. Configure proper routing from data sites to the witness across the WAN.
- B. Reconfigure WAN link to support an MTU of 9000.
- C. Reconfigure the VLAN of the witness traffic to be identical to data nodes.
- D. Stretch L2 traffic from WAN to both data sites.
- E. Reduce the MTU from 9000 to 1500 on all vSAN VMkernel interfaces.
Answer: B,E
Explanation:
Explanation/Reference: https://kb.vmware.com/s/article/2141733
NEW QUESTION 46
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