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5V0-21.20 by VMware - Page 1 | ExamCademy

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Question 1

Question 2

Question 3

Which two storage policy changes require a full rebuild of all components for an object? (Choose two.)

A Increase the number of disk stripes for an object from 2 to 3.
B Increase the IOPS limit for an object.
C Reduce the Primary Failures to Tolerate from 2 to 1 for an object using a failure tolerance method of RAID-1 (Mirroring.)
D Disable object checksum on an object.
E Change the failure tolerance method of an object from RAID-1 (Mirroring) to RAID-5 (Erasure Coding).

Question 4

An architect has been asked to plan the impact of a storage policy change to one of the production All-Flash based vSAN datastores. The change will reduce the failures to tolerate value from 2 to 1 for objects with a RAID-1 (Mirroring) layout in the existing policy. This change will be applied to multiple VMs.
Which statement is correct in this scenario?

A FTT-2 requires another change to apply a RAID-6 configuration.
B The policy will need to be recreated and applied with an additional tag.
C There will be no objects rebuilt that impact performance.
D There will be an object rebuild impact on performance.

Question 5

Which storage policy can be assigned to virtual machines in a 5-node, all flash vSAN cluster, to provide the highest level of redundancy?

A 1 failure "" RAID-5 (Erasure Coding)
B 2 failures "" RAID-6 (Erasure Coding)
C 2 failures "" RAID-1 (Mirroring)
D 3 failures "" RAID-1 (Mirroring)

Question 6

An administrator observes this health check warning:
Controller firmware is VMware certified
They proceed to update the latest firmware on the Storage Controller. After a successful firmware upgrade, the same health check alert continues to display.
Which statement is true?

A Controller is not VMware certified and hence any firmware version displays a warning.
B The recently installed firmware is yet to be certified and included in VMware Compatibility Guide.
C The VMware vSAN Health Service needs to be restarted for changes to take effect.
D The alert can be ignored and silenced, since the firmware is newer than the recommended firmware.

Question 7

Which is true of the vSAN iSCSI target service?

A It is a VMware supported cost effective way to provide shared storage to another hypervisor.
B The vSAN default storage policy determines the characteristics of the vSAN iSCSI target service storage objects.
C Security is provided through the iSCSI CHAP & Mutual CHAP Authentication methods.
D It is a VMware supported solution to provide iSCSI targets to applications that require multiple connections per session (MCS).

Question 8

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 jumbo frames for vSAN VMkernel ports and configure LACP for optimal load balancing.
C Enable Network I/O Control and allocate higher shares for vSAN traffic.
D Configure multiple vSAN VMkernel interfaces to load balance across multiple uplinks.
E Enable network resource pool at the VDS level to prioritize vSAN traffic.

Question 9

A vSAN administrator is working on a 4 host homogenous vSAN Cluster that has 2 disk groups per host. One of the hosts needs to be permanently removed and repurposed for some other use.
These are the out of order steps which need to be completed:

Delete the disk group(s) that reside on the host you want to decommission.
Wait for resync traffic to complete and the host to enter maintenance mode.
Ensure there is sufficient capacity in the vSAN disk groups to decommission a node.
Put the host into maintenance mode with full data migration selected.
Move the ESXi host out of the cluster.
What is the correct order?

A 3, 1, 4, 2, 5
B 3, 4, 2, 1, 5
C 4, 3, 2, 5, 1
D 4, 3, 2, 1, 5

Question 10

Refer to the exhibit.

Question 11

Refer to the exhibit.

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Reference the exhibit.

A university campus has a site topology illustrated in the exhibit. Adjacent connected buildings are connected with a single 40gb layer 3 network with a RTT of
0.6ms as depicted by each line. An architect wants to configure a fault domain in each building.
What would the architect need change in order to implement a fully supported vSAN Cluster?

A Enable a single Layer 2 network across all buildings for vSAN connectivity.
B Decrease the existing RTT between the existing links by 0.1ms or more.
C Add an additional link to the existing adjacent links to make it redundant.
D Enable IPv6 networks across all buildings for vSAN connectivity.

Which two statements regarding networking are true for a vSAN Stretched Cluster? (Choose two.)

A A 5ms RTT or less is required between the data sites.
B The vSAN data network must communicate with the vSAN witness host.
C PIM is required for stretched vSAN clusters.
D A Stretched Cluster can use Layer 2 or Layer 3 communication for the vSAN network.
E A Stretched Layer 2 network is required at the vSAN data sites and at the witness site.

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 Reduce the MTU from 9000 to 1500 on all vSAN VMkernel interfaces.
B Reconfigure the VLAN of the witness traffic to be identical to data nodes.
C Configure proper routing from data sites to the witness across the WAN.
D Reconfigure WAN link to support an MTU of 9000.
E Stretch L2 traffic from WAN to both data sites.

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 resyncing objects section of the vSAN UI, what is the current state of this cluster?

A Offline host reconnected to the cluster and all objects are synchronized.
B Objects will be resynchronized when the Object Repair Timer expires.
C Resync Throttling has caused data resynchronization scheduling.
D Metadata resynchronization is scheduled to occur every 60 minutes.