VMware 2VB-601 Online Practice Questions and Exam Preparation

VMware 2VB-601 Online Questions & Answers

• Question 41:

  What is storage latency?

  A. The maximum bandwidth provided by a Fiber Channel switch.
  B. The time required for a system to process a storage transaction.
  C. The level of availability in a storage sub-system
  D. The minimum bandwidth provided by an iSCSI initiator.
  B. The time required for a system to process a storage transaction.

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  Latency is a measure of the time required for a sub-system or a component in that sub-system to process a single storage transaction or data request. It's akin to the propagation delay of a signal through a discrete component and is typically a function of hardware. For storage subsystems, latency refers to how long it takes for a single data request to be received and the right data found and accessed from the storage media.

  References:https://storageswiss.com/2013/12/10/what-is-latency-and-how-is-it-different-from-iops/

• Question 42:

  If the Primary level of failures to tolerate policy is changed from 2 to 3 without shutting down the virtual machine, what will happen when the policy is applied?

  A. It will fail with an alert. Primary level of failures to tolerate=3 is not supported with mirroring.
  B. It will fail with an alert. The policy of a running VM cannot be dynamically changed.
  C. vSAN will try to create an additional mirror of the VM's disk components, as long as there is a sufficient number of fault domains and available capacity.
  D. vSAN will switch its failure to tolerate method for any VMs with that policy, to optimize for space. Primary level of failures to tolerate=3 can only be accomplished with erasure coding.
  C. vSAN will try to create an additional mirror of the VM's disk components, as long as there is a sufficient number of fault domains and available capacity.

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  Incorrect Answers:

  D: RAID 5 or RAID 6 erasure coding does not support a Primary level of failures to tolerate value of 3.

  Note: Primary level of failures to tolerate

  Defines the number of host and device failures that a virtual machine object can tolerate. For n failures tolerated, each piece of data written is stored in n+1 places, including parity copies if using RAID 5 or RAID 6.

  When provisioning a virtual machine, if you do not choose a storage policy, vSAN assigns this policy as the default virtual machine storage policy.

  If fault domains are configured, 2n+1 fault domains with hosts contributing capacity are required. A host, which is not part of any fault domain is considered its own single-host fault domain.

  Default value is 1. Maximum value is 3.

  References:

  https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-08911FD3-2462-4C1C-AE81-0D4DBC8F7990.html

• Question 43:

  Which statement is true regarding vSAN and vSphere high availability (HA) interoperability?

  A. The vSAN datastore must be configured as the heartbeat datastore for vSphere HA.
  B. vSphere HA must be disabled before enabling vSAN.
  C. vSphere HA host isolation must be set to disabled.
  D. The vSphere HA heartbeat object can only be assigned the default datastore storage policy.
  B. vSphere HA must be disabled before enabling vSAN.

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  References: https://docs.vmware.com/en/VMware-vSphere/6.0/com.vmware.vsphere.virtualsan.doc/GUID-D68890D8-841A-4BD1-ACA1-DA3D25B6A37A.html

• Question 44:

  A virtual machine named VM01 is running on Host01 on a four-node vSAN cluster. vSphere HA is enabled for the cluster. vSphere HA host isolation response is set to Power off and restart VMs. VM01 has a storage policy assigned to it that

  contains the rule Primary level of failures to tolerate = 1.

  A network failure occurs that causes a vSAN network partition. Host01 is isolated from the rest of the cluster. The other three nodes are NOT affected by the network failure.

  How does this network failure impact VM01?

  A. vSphere HA attempts to restart VM01 on Host01 after the number of minutes configured in the VSAN.ClomRepairDelay advanced setting has elapsed.
  B. vSphere HA immediately attempts to restart VM01 on Host01.
  C. vSAN rebuilds all components that belong to VM01 on other nodes in the cluster. After the rebuild is complete vSphere HA attempts to restart VM01 on a node other than Host01.
  D. vSphere HA powers off VM01 and attempts to restart it on a node other than Host01.
  C. vSAN rebuilds all components that belong to VM01 on other nodes in the cluster. After the rebuild is complete vSphere HA attempts to restart VM01 on a node other than Host01.

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  vSAN will wait for 60 minutes by default and then rebuild the affected data on other hosts in the cluster. The 60-minute timer is in place to avoid unnecessary movement of large amounts of data. As an example, a reboot takes the host offline for approximately 10 minutes. It would be inefficient and resource intensive to begin rebuilding several gigabytes or terabytes of data when the host is offline briefly. vSphere HA is tightly integrated with vSAN. The VMs that were running on a failed host are rebooted on other healthy hosts in the cluster in a matter of minutes. A click-through demonstration of this scenario is available here: vSphere HA and vSAN 50 VM Recovery.

  Recommendation: Enable vSphere HA for a vSAN cluster. Reference: vSAN Frequently Asked Questions (FAQ).pdf (Page 11)

• Question 45:

  What is the procedure for presenting an iSCSI LUN as a target for a VMFS datastore?

  A. Ensure that the ANY_INITIATOR is listed in the Allowed Initiators tab in vSAN iSCSI Target configuration.
  B. Add as a traditional VMFS datastore and connect using the vSAN iSCSI Target IQN.
  C. The use of the vSAN iSCSI Target for providing storage directly to vSphere is not currently supported.
  D. Use iSCSI vCenter Server Plugin on the target ESXi host.
  C. The use of the vSAN iSCSI Target for providing storage directly to vSphere is not currently supported.

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  Virutal SAN iSCSI Target for providing storage directly to vSphere is not currently supported.

• Question 46:

  Which services for vSAN are provided by NexentaConnect?

  A. Encryption and key management
  B. Apache and JavaScript
  C. NFS and SMB
  D. iSCSI and FC
  C. NFS and SMB

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  Reference: https://www.google.lk/url?sa=tandrct=jandq=andesrc=sandsource=webandcd=2andcad=rjaanduact=8andved=0ahUKEwig8OCcg6zaAhVEKlAKHZRLBrwQFggzMAEandurl=https%3A%2F%2Fnexenta.com%2Frs%2Fnexenta2%2Fimages% 2FNexentaConnect_vsan_Datasheet.pdfandusg=AOvVaw0RznW2485ZBfCWZutPUTSy

• Question 47:

  Which statement the describes the vSAN architecture?

  A. Redundant array of independent disks (RAID)
  B. Virtual Machine File System (VMFS) on local mirrored storage devices
  C. Local storage devices aggregated into a single datastore shared by all hosts in the cluster
  D. Block storage enabled through redundant virtual storage appliances
  C. Local storage devices aggregated into a single datastore shared by all hosts in the cluster

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  References: https://docs.vmware.com/en/VMware-vSphere/5.5/com.vmware.vsphere.storage.doc/GUID-ACC10393-47F6-4C5A-85FC-88051C1806A0.html

• Question 48:

  Which two statements are true about quorum and witness components in a vSAN cluster? (Choose two.)

  A. For an object to be available, a minimum of 50% of the component votes that make up the object must be accessible.
  B. The number of witness components created is directly related to how the components are distributed across the hosts and disks in a cluster.
  C. All components that make up an object must be accessible to achieve quorum.
  D. Every object requires two witness components for redundancy.
  A. For an object to be available, a minimum of 50% of the component votes that make up the object must be accessible.
  B. The number of witness components created is directly related to how the components are distributed across the hosts and disks in a cluster.

• Question 49:

  A cache tier device experiences a permanent disk failure.

  Which of the below represents a valid process for replacing the failed disk?

  A. 1. The hot spare disk replaces the failed disk immediately. 2. Physically replace the failed disk.
  B. 1. Using the vSphere Web Client, replace the failed disk with the hot spare disk. 2. Physically replace the failed disk.
  C. 1. Using the vSphere Web Client, delete the failed disk from the vSAN cluster. 2. Physically replace the failed disk. 3. Using the vSphere Web Client, re-create the disk group.
  D. 1. Physically replace the failed disk and vSAN automatically takes care of the rest of the process.
  C. 1. Using the vSphere Web Client, delete the failed disk from the vSAN cluster. 2. Physically replace the failed disk. 3. Using the vSphere Web Client, re-create the disk group.

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  When a flash device failure occurs, before physically removing the device from a host, you must decommission the device from Virtual SAN. The decommission process performs a number of operations in order to discard disk group memberships, deletes partitions and remove stale data from all disks.

  How to do it. Flash Device Decommission Procedure from the vSphere Web Client Log on to the vSphere Web Client Navigate to the Hosts and Clusters view and select the cluster object Go to the manage tab and select Disk management under the Virtual SAN section Select the disk group with the failed flash device Select the failed flash device and click the delete button

  References:https://blogs.vmware.com/storage/2014/12/02/vmware-virtual-san-operations-replacing-disk-devices/

• Question 50:

  Which are two characteristics of a RAID-5 storage configuration? (Choose two.)

  A. Data remains available with the loss of two storage devices.
  B. It uses less raw storage capacity than mirroring with the same level of availability.
  C. Data is striped across multiple storage devices.
  D. It requires a minimum of five storage devices.
  B. It uses less raw storage capacity than mirroring with the same level of availability.
  C. Data is striped across multiple storage devices.