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Question 1:

Which statement accurately describes cache tier sizing guidance for an all-flash vSAN cluster that will be supporting write-intensive workloads?

A. Multiple disk groups with larger cache devices should be used.

B. Multiple disk groups with two cache devices per disk group should be used.

C. A single disk group with a small cache device should be used to minimize de-staging write amplification.

D. Two cache devices per disk group should be configured for redundancy.

Correct Answer: A

While 1 to 5 disk groups per host are supported, we recommend a minimum of 2. Adding more disk groups can improve performance. Reference: https://storagehub.vmware.com/t/vmware-vsan/vmware-r-vsan-tm-design-and-sizing-guide/flash-cache-sizing-for-all-flash-configurations-2/


Question 2:

What are two ways to examine the storage policy compliance of a virtual machine? (Choose two.)

A. 1. Browse to the virtual machine in the vSphere Web Client navigator.

2. On the Summary tab, examine the value of the VM Storage Policy Compliance property under VM Storage Policies.

B. 1. Browse to the virtual machine in the vSphere Web Client navigator.

2. Right-click the virtual machine and select “Check storage policy compliance”.

C. 1. In the vSphere Web Client, navigate to the vSAN cluster.

2.

On the Storage tab, click vSAN and select Virtual Disks.

3.

Right-click on the virtual machine and select “Compliance status”.

D. 1. In the vSphere Web Client, navigate to the vSAN cluster.

2.

On the Monitor tab, click vSAN and select Virtual Objects.

3.

Select a virtual object.

4.

Examine the value in the Compliance Status property for the object.

Correct Answer: AB

https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.storage.doc/GUID-133B65D0-CE10-45E7-BFA5-74CAD19E0DFD.html


Question 3:

The following are the configuration details for a 10-node all-flash vSAN cluster:

All hosts contain one vSAN disk group.

Each disk group has 400GB for the cache tier and 1600GB for the capacity tier.

A host in the cluster is placed into maintenance mode. The maintenance mode option selected is “Ensure data accessibility from other hosts”.

How much is the vSAN datastore raw capacity reduced while the host is in maintenance mode?

A. 1600GB

B. 400GB

C. 0GB

D. 2000GB

Correct Answer: A

References: https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-73493C3C-0DEC-419D-9E36-801B2839A5A5.html


Question 4:

Which three statements are true regarding vSAN networking requirements? (Choose three.)

A. Each host must have minimum bandwidth dedicated to vSAN:

1.

Dedicated 1 Gbps for hybrid configurations.

2.

Dedicated or shared 10 Gbps for all-flash configurations.

B. vSAN supports both IPv4 and IPv6.

C. Each host in the vSAN cluster must have a VMkernel network adapter with vSAN traffic enabled.

D. Each host in a vSAN cluster must use NIC teaming with NetFlow enabled.

E. The vSAN port group must have Promiscuous Mode emabled.

Correct Answer: ABC

References: https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-AFF133BC-F4B6-4753-815F-20D3D752D898.html


Question 5:

Which two vSAN configurations require the use of a witness appliance? (Choose two.)

A. two-node configuration

B. all-flash configuration

C. stretched cluster configuration

D. hybrid configuration

Correct Answer: AC


Question 6:

When implementing vSAN stretched clusters, bandwidth requirements between the preferred and secondary sites are determined by which factors?

A. Total number of read operations and block size

B. Total number of components and block size

C. Total number of write operations and block size

D. Total number of read operations, total number of write operations and block size

Correct Answer: C


Question 7:

Which three of the listed objects types can be viewed in the vSAN Used Capacity Breakdown user interface? (Choose three.)

A. Swap objects

B. Disk groups

C. File system overhead

D. Virtual disks

E. Physical disks

Correct Answer: ACD

References: https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-6F7F134E-A6F7-4459-8C31-C021FF2B1F54.html


Question 8:

Which two statements are true about the vSAN health and performance services? (Choose two.)

A. The vSAN performance service must be enabled before the vSAN health service.

B. The vSAN health service is enabled by default.

C. The vSAN health service is disabled by default.

D. The vSAN performance service is disabled by default.

Correct Answer: BD

Reference: https://kb.vmware.com/s/article/2149406


Question 9:

What is required for enabling deduplication and compression in a vSAN cluster?

A. Host client cache enabled

B. At least two disk groups in every host

C. An all-flash configuration

D. More than three hosts

Correct Answer: C

References: https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-2285B446-46BF-429C-A1E7-BEE276ED40F7.html


Question 10:

A 12-node vSAN cluster has been deployed across three server racks in a data center.

There are four nodes in each server rack.

A vSAN fault domain has been configured for each server rack for a total of three fault domains.

All virtual machines in the cluster have the vSAN default storage policy assigned to them.

This policy has not been modified.

vSphere HA is enabled for the cluster.

One of the server racks loses power.

How does this affect virtual machines running on this cluster?

A. Since there are four nodes in each server rack, erasure coding is used to rebuild data that was lost due to the server rack power failure. vSphere HA monitors the rebuild process and powers on all affected virtual machines after the rebuild process is complete.

B. Virtual machine data in the failed server rack is rebuilt immediately using parity information. vSphere HA powers off and restarts all of the virtual machines to rebalance storage utilization across the cluster.

C. All virtual machine data remains accessible. Virtual machines running on nodes in the failed server rack are restarted on nodes in the other two server racks. Virtual machines in the other two server racks continue to run.

D. Virtual machines running on nodes in the failed server rack remain offline for 60 minutes. Virtual machines in the other two server racks continue to run and are marked “Degraded”.

Correct Answer: C


Question 11:

Which of the listed configurations is a valid and supported vSAN configuration?

A. Four physical hosts Every host has one vSAN disk group Each vSAN disk group contains one cache device and five capacity devices The vSAN service is enabled on a VMkernel adapter on every host

B. Three physical hosts Every host has one vSAN disk group Each vSAN disk group contains two cache devices and four capacity devices The vSAN service is enabled on a VMkernel adapter on every host

C. Four physical hosts Two of the host have one vSAN disk group, the other two hosts are “compute-only” nodes Each vSAN disk group contains one cache device and three capacity devices The vSAN service is NOT enabled on the “compute-only” nodes

D. Four physical hosts Two of the host have one vSAN disk group, the other two hosts are “compute-only” nodes Each vSAN disk group contains one cache device and three capacity devices The vSAN service is enabled on a VMkernel adapter on every host

Correct Answer: A


Question 12:

Which replication solution is supported with vSAN and Site Recovery Manager?

A. vSAN iSCSI synchronous replication

B. vSphere Replication

C. vSAN iSCSI asynchronous replication

D. vSphere Fault Tolerance

Correct Answer: B

References: https://docs.vmware.com/en/VMware-Site-Recovery/services/com.vmware.srmaas.admin.doc/GUID-5937A071-B1AA-4224-B508-4D244D252C52.html


Question 13:

View the exhibit.

The exhibit shows a single node of a vSAN cluster. All nodes have been configured identically.

Which statement is true about the information in the exhibit?

A. This is an invalid design. There are too many disk groups.

B. This is an invalid design. You CANNOT mix all-flash disk groups with hybrid disk groups.

C. This is a valid all-flash vSAN configuration.

D. This is a valid hybrid vSAN configuration.

E. This is an invalid design. There are too few capacity disks.

Correct Answer: B


Question 14:

Consider the following scenario in a vSAN cluster that contains six hosts:

All virtual machines are assigned the vSAN Default Storage Policy, which has not been modified.

Deduplication and compression are not enabled.

Every vSAN disk group in the cluster contains one cache device and five capacity devices

What happens when a capacity device transmits SCSI sense code errors and fails?

A. All components on the affected device are marked “degraded”. vSAN attempts to rebuild the components on other healthy devices in the cluster without delay.

B. All components on the affected device are marked “degraded”. The host containing the affected drive is placed into maintenance mode using the `ensure accessibility\’ option.

C. All components on the affected device are marked “offline”. vSAN attempts to rebuild the components on other healthy devices in the cluster after 60 minutes by default.

D. The host containing the affected drive is placed into maintenance mode using the “ensure accessibility” option. An administrator must log into the vSphere Web Client and click Repair Objects Immediately.

Correct Answer: A


Question 15:

Storage policies can be based on which two types of rules? (Choose two.)

A. Data services provided by hosts.

B. Datastore placement provided by Storage DRS.

C. Data services provided by datastores.

D. Data services provided by virtual machines.

Correct Answer: AC

References: https://www.virtualizationhowto.com/2017/10/using-vmware-vm-storage-policies/


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