VMware 2V0-621 Online Practice Questions and Exam Preparation

VMware 2V0-621 Online Questions & Answers

• Question 51:

  An administrator notices that there is an all paths down (APD) event occurring for the software FCoE storage.

  What is a likely cause?

  A. Spanning Tree Protocol is enabled on the network ports.
  B. Spanning Tree Protocol is disabled on the network ports.
  C. Spanning Tree Protocol is enabled on the storage processors.
  D. Spanning Tree Protocol is disabled on the storage processors.
  A. Spanning Tree Protocol is enabled on the network ports.

  ---

  : Configuration Guidelines for Software FCoE

  When setting up your network environment to work with ESXi software FCoE, follow the guidelines and best practices that VMware offers.

  Network Switch Guidelines

  Follow these guidelines when you configure a network switch for software FCoE environment:

  1.

  On the ports that communicate with your ESXi host, disable the Spanning Tree Protocol (STP). Having the STP enabled might delay the FCoE Initialization Protocol (FIP) response at the switch and cause an all paths down (APD) condition. The FIP is a protocol that FCoE uses to discover and initialize FCoE entities on the Ethernet.

  2.

  Turn on Priority-based Flow Control (PFC) and set it to AUTO.

  3.

  Make sure that you have a compatible firmware version on the FCoE switch.

  Reference: https://pubs.vmware.com/vsphere-60/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-60-storage-guide.pdf

• Question 52:

  An administrator is able to manage an ESXi 6.x host connected to vCenter Server using the vSphere Web Client but is unable to connect to the host directly.

  Which action should the administrator take to correct this behavior?

  A. Restart management agents on the ESXi host.
  B. Disable Lockdown Mode on the ESXi host through vCenter Server.
  C. Disable the ESXi firewall with the command esxcli network firewall unload.
  D. Reboot the ESXi host.
  B. Disable Lockdown Mode on the ESXi host through vCenter Server.

  ---

  ESXi 6.0:

  Starting with vSphere 6.0, you can select normal Lockdown mode or strict Lockdown mode, which offer different degrees of lockdown.

  Normal Lockdown mode:

  In normal lockdown mode the DCUI service is not stopped. If the connection to the vCenter Server is lost and access through the vSphere Web Client is no longer available, privileged accounts can log in to the ESXi host's Direct Console

  Interface and exit lockdown mode. Only these accounts can access the Direct Console User Interface:

  Accounts in the Exception User list for lockdown mode who have administrative privileges on the host. The Exception Users list is meant for service accounts that perform very specific tasks. Adding ESXi administrators to this list defeats the

  purpose of lockdown mode.

  Users defined in the DCUI.Access advanced option for the host. This option is for emergency access to the Direct Console Interface in case the connection to vCenter Server is lost. These users do not require administrative privileges on the

  host.

  Strict Lockdown mode:

  In strict lockdown mode the DCUI service is stopped. If the connection to vCenter Server is lost and the vSphere Web Client is no longer available, the ESXi host becomes unavailable unless the ESXi Shell and SSH services are enabled and

  Exception Users are defined. If you cannot restore the connection to the vCenter Server system, you have to reinstall the host.

  For more information on Lockdown mode in vSphere 6.0, see the Lockdown Mode section in the vSphere Security Guide.

  To enable or disable Lockdown mode from the DCUI:

  1.

  Log directly in to the ESXi host.

  2.

  Open the DCUI on the host.

  3.

  Press F2 for Initial Setup.

  4.

  Press Enter to toggle the Configure Lockdown Mode setting.

  To enable or disable Lockdown mode from the vSphere Web Client:

  1.

  Browse to the host in the vSphere Web Client inventory.

  2.

  Click the Manage tab and click Settings.

  3.

  Under System, select Security Profile.

  4.

  In the Lockdown Mode panel, click Edit.

  5.

  Click Lockdown Mode and select one of the lockdown mode options.

  Reference: https://kb.vmware.com/selfservice/microsites/search.do?language=en_USandcmd=displayKCandexternalId=1008077

• Question 53:

  An administrator tries to run esxtop to troubleshoot CPU performance issues, but no output is displayed.

  How can the issue be resolved?

  A. esxtop is deprecated in vSphere 6.x, resxtop must be used to produce the desired output.
  B. In esxtop, press f and place an asterisk next to each field that should be displayed.
  C. sudo should be run in front of esxtop to give the administrator the proper permissions.
  D. The esxtop command must be run from the /proc directory to produce output.
  B. In esxtop, press f and place an asterisk next to each field that should be displayed.

  ---

  Press F (Field Order) to modify fields which you want to display. Then hit Enter to validate.

  

  Reference: http://www.vladan.fr/storage-performance-troubleshooting-with-esxtop-guide/

• Question 54:

  Which two statements are true regarding VMFS3 volumes in ESXi 6.x? (Choose two.)

  A. Creation of VMFS3 volumes is unsupported.
  B. Upgrading VMFS3 volumes to VMFS5 is supported.
  C. Existing VMFS3 volumes are unsupported.
  D. Upgrading VMFS3 volumes to VMFS5 is unsupported.
  A. Creation of VMFS3 volumes is unsupported.
  B. Upgrading VMFS3 volumes to VMFS5 is supported.

  ---

  

  Reference: https://pubs.vmware.com/vsphere-60/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-60-storage-guide.pdf

• Question 55:

  Which three are requirements for configuring Storage I/O Control (SIOC)? (Choose three.)

  A. The datastore must consist of only one extent.
  B. The datastore is managed by a single vCenter Server.
  C. Auto-tiered storage must be compatable with SIOC.
  D. Auto-tiered storage must be SSD or SATA.
  E. The datastore must be VMFS.
  A. The datastore must consist of only one extent.
  B. The datastore is managed by a single vCenter Server.
  C. Auto-tiered storage must be compatable with SIOC.

  ---

  : Storage I/O Control Requirements Storage I/O Control has several requirements and limitations.

  1.

  Datastores that are Storage I/O Control-enabled must be managed by a single vCenter Server system.

  2.

  Storage I/O Control is supported on Fibre Channel-connected and iSCSI-connected storage. NFS datastores and Raw Device Mapping (RDM) are not supported.

  3.

  Storage I/O Control does not support datastores with multiple extents.

  4.

  Before using Storage I/O Control on datastores that are backed by arrays with automated storage tiering capabilities, check the VMware Storage/SAN Compatibility Guide to verify whether your automated tiered storage array has been

  certified to be compatible with Storage I/O Control.

  Automated storage tiering is the ability of an array (or group of arrays) to migrate LUNs/volumes or parts of LUNs/volumes to different types of storage media (SSD, FC, SAS, SATA) based on user-set policies and current I/O patterns. No

  special certification is required for arrays that do not have these automatic migration/tiering features, including those that provide the ability to manually migrate data between different types of storage media.

  Reference: http://www.vmware.com/pdf/vsphere4/r41/vsp_41_resource_mgmt.pdf

• Question 56:

  Which three statements are correct regarding Fibre Channel over Ethernet (FCOE)? (Choose three.)

  A. The network switch must have Priority-based Flow Control (PFC) set to AUTO.
  B. The network switch must have Priority-based Flow Control (PFC) set to ON.
  C. Each port on the FCoE card must reside on the same vSwitch.
  D. Each port on the FCoE card must reside on a separate vSwitch.
  E. The ESXi host will require a reboot after moving an FCoE card to a different vSwitch.
  A. The network switch must have Priority-based Flow Control (PFC) set to AUTO.
  D. Each port on the FCoE card must reside on a separate vSwitch.
  E. The ESXi host will require a reboot after moving an FCoE card to a different vSwitch.

  ---

  

  Reference: https://pubs.vmware.com/vsphere-60/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-60-storage-guide.pdf

• Question 57:

  What are two use cases for Fibre Channel Zoning in a vSphere environment? (Choose two.)

  A. Increases the number of targets presented to an ESXi host.
  B. Controls and isolates paths in a fabric.
  C. Controls and isolates paths to an NFS share.
  D. Can be used to separate different environments.
  B. Controls and isolates paths in a fabric.
  D. Can be used to separate different environments.

  ---

  : Using Zoning with Fibre Channel SANs

  Zoning provides access control in the SAN topology. Zoning defines which HBAs can connect to which targets. When you configure a SAN by using zoning, the devices outside a zone are not visible to the devices inside the zone.

  Zoning has the following effects:

  1.

  Reduces the number of targets and LUNs presented to a host.

  2.

  Controls and isolates paths in a fabric.

  3.

  Can prevent non-ESXi systems from accessing a particular storage system, and from possibly destroying VMFS data.

  4.

  Can be used to separate different environments, for example, a test from a production environment.

  Reference: https://pubs.vmware.com/vsphere-60/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-60-storage-guide.pdf

• Question 58:

  An administrator has been instructed to secure existing virtual machines in vCenter Server. Which two actions should the administrator take to secure these virtual machines? (Choose two.)

  A. Disable native remote management services
  B. Restrict Remote Console access
  C. Use Independent Non-Persistent virtual disks
  D. Prevent use of Independent Non-Persistent virtual disks
  B. Restrict Remote Console access
  D. Prevent use of Independent Non-Persistent virtual disks

  ---

  

  

  Reference: http://www.vmware.com/files/pdf/techpaper/VMW-TWP-vSPHR-SECRTY-HRDNG-USLET-101-WEB-1.pdf

• Question 59:

  An administrator has configured Network I/O Control to support bandwidth allocation to a group of virtual machines running on a vSphere 6.x HA/DRS Cluster.

  Which two conditions would cause DRS to migrate one of these virtual machines to another host in the cluster? (Choose two.)

  A. A physical adapter cannot supply the minimum bandwidth in accordance with the teaming policy.
  B. A reservation for a VM network adapter is less than the free quota in the network resource pool.
  C. A physical adapter that carries traffic from the virtual machines is offline.
  D. The reservation is changed to a value that the initial host can no longer satisfy.
  C. A physical adapter that carries traffic from the virtual machines is offline.
  D. The reservation is changed to a value that the initial host can no longer satisfy.

  ---

  Bandwidth Admission Control in vSphere DRS If you power on a virtual machine that is in a cluster, vSphere DRS places the virtual machine on a host that has the capacity to guarantee the bandwidth reserved for the virtual machine according to the active teaming policy. vSphere DRS migrates a virtual machine to another host to satisfy the bandwidth reservation of the virtual machine in these situations:

  1.

  The reservation is changed to a value that the initial host can no longer satisfy.

  2.

  A physical adapter that carries traffic from the virtual machine is offline. To use admission control in vSphere DRS, perform the following tasks:

  Reference: https://docs.vmware.com/en/VMware-vSphere/6.0/com.vmware.vsphere.networking.doc/GUID-7B131191-D989-431A-99F7-BA3C27BD4F64.html

• Question 60:

  An administrator is creating a new Content Library. It will subscribe to another remote Content Library without authentication enabled.

  What information from the published library will they need in order to complete the subscription?

  A. Subscription URL
  B. A security password from the publishing Content Library
  C. Publisher's Items.json file
  D. Username from the publishing Content Library
  A. Subscription URL

  ---

  Subscribed content library Creates a content library, which is subscribed to a published content library. You can only sync the subscribed library with the published library to see up-to-date content, but you cannot add or remove content from the subscribed library. Only an administrator of the published library can add, modify, and remove contents from the published library.

  Reference: https://pubs.vmware.com/vsphere-60/index.jsp?topic=%2Fcom.vmware.vsphere.vm_admin.doc%2FGUID-2A0F1C13-7336-45CE-B211-610D39A6E1F4.html