VMware 2VB-601 Online Practice Questions and Exam Preparation

VMware 2VB-601 Online Questions & Answers

• Question 11:

  vSAN supports Microsoft Windows Server Failover Cluster (WSFC) with which configuration?

  A. File share witness quorum with Exchange Database Availability Groups, SQL Server AlwaysON Availability Groups (AAG)
  B. Virtual raw device mapping (RDM) with Exchange Database Availability Groups, SQL Server AlwaysOn Availability Groups (AAG)
  C. FCI witness quorum with Exchange Database Availability Groups, SQL Server AlwaysOn Availability Groups (AAG)
  D. NFS mount witness quorum with Exchange Database Availability Groups, SQL Server AlwaysON Availability Groups (AAG)
  C. FCI witness quorum with Exchange Database Availability Groups, SQL Server AlwaysOn Availability Groups (AAG)

• Question 12:

  A 16-node vSAN cluster has been deployed in a primary data center. All virtual machines are assigned a storage policy containing the rule Primary level of failures to tolerate = 1. A storage controller in one of the nodes produces several errors and eventually suffers a permanent failure.

  How does vSAN handle this issue?

  A. All components on the drives attached to the failed storage controller are marked "Stale". An administrator must log into the vSphere Web Client and click the Repair Objects Immediately button to restore redundancy.
  B. All components on the drives attached to the failed storage controller are marked "Stale". vSAN starts rebuilding the affected components on other healthy drives in the vSAN cluster after 60 minutes have elapsed.
  C. All components on the drives attached to the failed storage controller are marked "Absent". vSAN starts rebuilding the affected components on other healthy drives in the vSAN cluster after the affected host is put into maintenance node.
  D. All components on the drives attached to the failed storage controller are marked "Degraded". vSAN immediately starts rebuilding the affected components on other healthy drives in the vSAN cluster.
  D. All components on the drives attached to the failed storage controller are marked "Degraded". vSAN immediately starts rebuilding the affected components on other healthy drives in the vSAN cluster.

• Question 13:

  Which two factors affect storage performance? (Choose two.)

  A. Network connectivity type
  B. Boot storm delay factor
  C. RAID configuration
  D. Drive speed
  B. Boot storm delay factor
  C. RAID configuration

• Question 14:

  If a vSAN capacity device experiences a pattern of sustained high latency, how does vSAN attempt to remediate the issue?

  A. vSAN attempts to evacuate the data from the storage device.
  B. vSphere DRS migrates all virtual machines from the host containing the affected device
  C. Virtual machines with components on the affected device are rebooted if vSphere Proactive HA is enabled
  D. The host containing the storage device is automatically placed into maintenance mode and the "vSAN storage device failure" alarms is triggered.
  A. vSAN attempts to evacuate the data from the storage device.

  ---

  In vSAN 6.1 we introduced Dying Disk Handling to identify and remediate pro-actively disks that we detected high latency from. When failure of a device is anticipated, vSAN evaluates the data on the device. If there are replicas of the data on other devices in the cluster, vSAN will mark these components as "absent". "Absent" components are not rebuilt immediately as it is possible the cause of the issue is temporary. vSAN waits for 60 minutes by default before starting the rebuilding process. This does not affect the availability of a virtual machine as the data is still accessible using one or more other replicas in the cluster. If the only replica of data is located on a suspect device, vSAN will immediately start the evacuation of this data to other healthy storage devices.

  References:https://storagehub.vmware.com/export_to_pdf/vmware-vsan-6-6-technical-overview-1

• Question 15:

  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
  A. two-node configuration
  C. stretched cluster configuration

• Question 16:

  How many consecutive heartbeats of communication must be lost between master and the witness host for the witness host to be deemed to have failed?

  A. 5
  B. 7
  C. 3
  D. 10
  A. 5

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  If communication is lost for 5 consecutive heartbeats (5 seconds) between the master and the Witness, the Witness is deemed to have failed. References:https://storagehub.vmware.com/export_to_pdf/vsan-stretched-cluster-2-node-guide, page 51

• Question 17:

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

• Question 18:

  Which statement is true about vSAN three-node cluster configuration?

  A. Three-node clusters can tolerate a maximum of 2 host failures as long as there are at least 2 disk groups in each host.
  B. A storage policy with a RAID-5/6 erasure coding rule cannot be applied to a virtual machine object.
  C. A storage policy with a deduplication and compression rule can be applied to a virtual machine object.
  D. Three-node clusters can tolerate a maximum of 2 host failures.
  B. A storage policy with a RAID-5/6 erasure coding rule cannot be applied to a virtual machine object.
  C. A storage policy with a deduplication and compression rule can be applied to a virtual machine object.

  ---

  B ?It's true that RAID 5/6 erasure coding can only be enabled for all flash configurations. But the question does not specify if it's a hybrid or all flash configuration. Also erasure coding setting is not a vm base setting its cluster base setting. 3-Node Configurations While vSAN fully supports 2-node and 3-node configurations, these configurations can behave differently than configurations with 4 or greater nodes. In particular, in the event of a failure, there are no resources to rebuild components on another host in the cluster to tolerate another failure. Also with a 2-node and 3-node configurations, there is no way to migrate all data from a node during maintenance. In 2-node and 3-node configurations, there are 2 replicas of the data and a witness, and these must all reside on different hosts. A 2-node and 3-node configuration can only tolerate 1 failure. The implications of this are that if a node fails, vSAN cannot rebuild components, nor can it provision new VMs that tolerate failures. It cannot re-protect virtual machine objects after a failure until the failed components are restored.

  Design decision: Consider 4 or more nodes for the vSAN cluster design for maximum availability

  Multiple disk groups and 3-node clusters Another advantage of multiple disk groups over single disk group design applies to 3-node clusters. If there is only a single disk group per host in a 2-node and 3-node cluster, and one of the flash cache devices fails, there is no place for the components in the disk group to be rebuilt. However, if there were multiple disk groups per host, and if there is sufficient capacity in the other disk group on the host when the flash cache device fails, vSAN would be able to rebuild the affected components in the remaining disk group. This is another consideration to keep in mind if planning to deploy 2-node and 3-node vSAN clusters.

• Question 19:

  How does vSAN respond when a vSAN drive is pulled from a server chassis or a host if a vSAN cluster fails without warning?

  A. Components on the affected device(s) are marked as absent. vSAN will attempt to rebuild the components after the VSAN.ClomRepairDelay timer, which is set to 60 minutes by default, expires.
  B. Components on the affected device(s) are marked as inaccessible. vSAN will attempt to rebuild the components the next time a host enters maintenance mode.
  C. Components on the affected device(s) are marked as degraded. vSAN will attempt to rebuild the components the next time a host enters maintenance mode.
  D. Components on the affected device(s) are marked as healthy. vSAN will attempt to rebuild the components after the VSAN.ComponentRecovery timer, which is set to 60 minutes by default, expires.
  E. Components on the affected device(s) are marked as stale. vSAN will attempt to rebuild the components after the VSAN.ComponentRecovery timer, which is set to 90 minutes by default, expires.
  A. Components on the affected device(s) are marked as absent. vSAN will attempt to rebuild the components after the VSAN.ClomRepairDelay timer, which is set to 60 minutes by default, expires.

• Question 20:

  Which three of the listed items are monitored by the vSAN performance service? (Choose three.)

  A. VMkernel adapters at the cluster level
  B. Virtual machine consumption at the cluster level
  C. Disk group at the host level
  D. VMkernel adapters at the virtual disk level
  E. Backend traffic at the cluster level
  A. VMkernel adapters at the cluster level
  B. Virtual machine consumption at the cluster level
  E. Backend traffic at the cluster level

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  A:

  1.

  Navigate to the vSAN cluster in the vSphere Web Client Navigator, and select a host.

  2.

  Click the Monitor tab and click Performance.

  3.

  Select vSAN - VMkernel Adapters, and select a VMkernel adapter, such as vmk1. Select a time range for your query.

  4.

  vSAN displays performance charts for the VMkernel adapter, including throughput, packets per second, and packets loss rate.

  BE: When the performance service is turned on, the cluster summary displays an overview of Virtual SAN performance statistics, including Virtual SAN IOPS, throughput, and latency. At the cluster level, you can view detailed statistical charts for virtual machine consumption and the Virtual SAN back end.

  References: https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-93E95CA4-D7D1-4729-8FB4-385B55B85FCD.html