VMware 2V0-621 Online Practice Questions and Exam Preparation

VMware 2V0-621 Online Questions & Answers

• Question 141:

  An administrator is configuring Storage I/O Control. After enabling, the administrator notices high device latency and poor storage performance. Which two actions would likely reduce latency and improve functionality? (Choose two.)

  A. Ensure that each datastore uses shared spindles.
  B. Ensure that each datastore has independent spindles.
  C. Set the congestion threshold to 15ms.
  D. Set the congestion threshold value to 5ms.
  B. Ensure that each datastore has independent spindles.
  C. Set the congestion threshold to 15ms.

• Question 142:

  An administrator is using Auto Deploy to create several ESXi 6.x hosts that will be connected to a vSphere Distributed Switch. After the hosts are deployed, the administrator notices that LACP packets are not being sent between them.

  Which statement best describes why this issue is occurring?

  A. LACP is not enabled on the vCenter Server.
  B. The LACP support settings do not exist in the host profile.
  C. The LACP installation bundle is not included in the image profile.
  D. LACP has not been configured on the Auto Deploy server.
  B. The LACP support settings do not exist in the host profile.

  ---

  LACP Limitations on a vSphere Distributed Switch Link Aggregation Control Protocol (LACP) on a vSphere distributed switch allows network devices to negotiate automatic bundling of links by sending LACP packets to a peer. However, there are some limitations when using LACP with a vSphere distributed switch.

  1.

  LACP only works with IP Hash load balancing and Link Status Network failover detection.

  2.

  LACP is not compatible with iSCSI software multipathing.

  3.

  vSphere only supports one LACP group per distributed switch, and only one LACP group per host.

  4.

  LACP settings do not exist in host profiles.

  5.

  LACP between two nested ESXi hosts is not possible.

  6.

  LACP does not work with port mirroring.

  Reference: https://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vsphere.networking.doc%2FGUID-3FDE1E96-9217-4FE6-8B76-6E3A64766828.html

• Question 143:

  When attempting to place a datastore in Maintenance Mode, the task remains at 1%. What are two potential causes for this? (Choose two.)

  A. Storage DRS is disabled on one or more virtual machine(s) disk(s).
  B. Storage DRS rules prevent migration recommendations for the disk.
  C. Storage DRS datastores have insufficient space to accommodate failover.
  D. Storage DRS provisioning network has been limited with I/O control policies.
  A. Storage DRS is disabled on one or more virtual machine(s) disk(s).
  B. Storage DRS rules prevent migration recommendations for the disk.

  ---

  Datastore Cannot Enter Maintenance Mode

  You place a datastore in maintenance mode when you must take it out of usage to service it. A datastore enters or leaves maintenance mode only as a result of a user request.

  Problem

  A datastore in a datastore cluster cannot enter maintenance mode. The Entering Maintenance Mode status remains at 1%.

  Cause

  One or more disks on the datastore cannot be migrated with Storage vMotion. This condition can occur in the following instances.

  1.

  Storage DRS is disabled on the disk.

  2.

  Storage DRS rules prevent Storage DRS from making migration recommendations for the disk.

  Solution

  1.

  If Storage DRS is disabled, enable it or determine why it is disabled. See Storage DRS is Disabled on a Virtual Disk for reasons why Storage DRS might be disabled.

  2.

  If Storage DRS rules are preventing Storage DRS from making migration recommendations, you can remove or disable particular rules.

  a In the vSphere Client inventory, right-click the datastore cluster and select Edit Settings.

  b Select Rules and click the rule.

  c Click Remove.

  d Click OK.

  Alternatively, if Storage DRS rules are preventing Storage DRS from making migration recommendations, you can set the Storage DRS advanced option IgnoreAffinityRulesForMaintenance to 1.

  a In the vSphere Client inventory, right-click the datastore cluster and select Edit Settings.

  b Select SDRS Automation and click Advanced Options.

  c Enter 1 in the Value column for IgnoreAffinityRulesForMaintenance.

  d Click OK.

  Reference:

  https://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vsphere.troubleshooting.doc%2FGUID-91D4FBBC-0677-44DA-B0F2-43A3504F8CA0.html

• Question 144:

  An administrator suspects that the MTU value for a vSphere Standard Switch is misconfigured.

  Which two commands can determine the value? (Choose two.)

  A. esxcfg-vswitch -l
  B. esxcli network vswitch standard list
  C. esxcfg-vss -l
  D. esxcli network standard vswitch list
  A. esxcfg-vswitch -l
  B. esxcli network vswitch standard list

  ---

  To display a list of vSwitches on the host, and to check that the configuration of the vSwitch is correct:

  Run this command for ESX 3.5 and ESXi/ESX 4.x:

  # esxcfg-vswitch -l

  Run this command for ESXi 5.0:

  # esxcli network vswitch standard list

  Reference: https://kb.vmware.com/selfservice/microsites/search.do?language=en_USandcmd=displayKCandexternalId=1007654

• Question 145:

  Refer to the Exhibit.

  

  An administrator wishes to provide Load Balanced I/O for the device shown in the Exhibit. To meet this requirement, which setting should be changed?

  A. Storage Array Type Policy = VMW_NMP_RR
  B. Path Selection Policy = Round Robin (VMware)
  C. Storage Array Type Policy = VMW_SATP_RR
  D. Path Selection Policy = MRU (VMware)
  B. Path Selection Policy = Round Robin (VMware)

  ---

  Round Robin (RR): The VMW_PSP_RR policy uses an automatic path selection, rotating through all available paths, enabling the distribution of load across the configured paths.

  1.

  For Active/Passive storage arrays, only the paths to the active controller will be used in the Round Robin policy.

  2.

  For Active/Active storage arrays, all paths will be used in the Round Robin policy.

  Note: For logical units associated with Microsoft Cluster Service (MSCS) and Microsoft Failover Clustering virtual machines, the Round Robin pathing policy is supported only on ESXi 5.5 and later.

  Reference: https://kb.vmware.com/selfservice/microsites/search.do?language=en_USandcmd=displayKCandexternalId=1011340

• Question 146:

  What is the minimum Virtual Hardware version required for vFlash Read Cache?

  A. Version 8
  B. Version 9
  C. Version 10
  D. Version 11
  C. Version 10

  ---

  Virtual Machines vSphere Flash Read Cache is available only to virtual machines with hardware version 10 (VMX-10). All legacy virtual machine hardware must be upgraded to hardware version 10 to use Virtual Flash Read Cache.

  Reference:

  https://www.vmware.com/files/pdf/vSphere_55_Flash_Read_Cache_Whats_New_WP.pdf

• Question 147:

  Refer to the Exhibit.

  

  An administrator is attempting to enable Enhanced vMotion Compatibility (EVC), but receives the error shown in the Exhibit.

  Which condition would explain the error?

  A. The ESXi hosts are not licensed for EVC.
  B. The administrator does not have privileges to enable EVC.
  C. The ESXi host CPU has the Intel No-Execute feature disabled.
  D. The administrator has turned on Intel Virtualization Technology.
  C. The ESXi host CPU has the Intel No-Execute feature disabled.

  ---

  To resolve the issue, you must enable both No-Execute Memory Protection and Virtualization Technology features in order for EVC to function. Consult the documentation for your hardware for more information.

  To resolve this issue:

  1.

  Enter the BIOS setup (F9 on most systems at boot).

  2.

  Select Advanced Options.

  3.

  Select Processor Options.

  4.

  Change No-Execute Memory Protection to Enabled, if necessary.

  5.

  Change Intel Virtualization Technology to Enabled, if necessary.

  6.

  Reboot the host.

  7.

  Enable EVC in the cluster settings.

  Notes:

  1.

  Hardware Virtualization is called Intel VT on Intel processors and AMD-V on AMD processors.

  2.

  Execute Protection is called Intel eXecute Disable (XD) on Intel processors and AMD No eXecute (NX) on AMD processors.

• Question 148:

  An administrator needs to configure a storage solution for a vSphere 6.x implementation with these characteristics:

  1.

  Snapshot support

  2.

  vMotion Capability

  3.

  Clustering across multiple ESXi hosts

  4.

  Database application with high transaction count

  5.

  vFlash Read Cache

  Which solution meets all of the stated requirements?

  A. A vmdk located on a Shared VMFS datastore
  B. A Virtual Mode Raw Device Mapped LUN
  C. A Physical Mode Raw Device Mapped LUN
  D. A virtual SAN-based vmdk
  B. A Virtual Mode Raw Device Mapped LUN

  ---

  The requirement for this specific storage solution has snapshot support, and vFlash Read cache. For this you need a virtual mode raw device mapped LUN. RDM, which permits the use of existing SAN commands, is generally used to improve performance in I/O-intensive applications. RDM can be configured in either virtual compatibility mode or physical compatibility mode. Virtual mode provides benefits found in VMFS, such as advanced file locking and snapshots. Physical mode provides access to most hardware functions of the storage system that is mapped

• Question 149:

  Which two settings are required for Virtual Machine Component Protection (VMCP) to protect from All Paths Down (APD) and Permanent Device Loss (PDL)? (Choose two.)

  A. Host Monitoring
  B. VM Restart Priority
  C. Virtual machine Monitoring
  D. Response for Host Isolation
  A. Host Monitoring
  B. VM Restart Priority

  ---

  If either the Host Monitoring or VM Restart Priority settings are disabled, VMCP cannot perform virtual machine restarts. Storage health can still be monitored and events can be issued, Reference: https://pubs.vmware.com/vsphere60/index.jsp?topic=%2Fcom.vmware.vsphere.avail.doc%2FGUID-F01F7EB8-FF9D-45E2-A093-5F56A788D027.html

• Question 150:

  Which command shows the Physical Uplink status for a vmnic?

  A. esxcli network ip get
  B. esxcli network nic list
  C. esxcli network vmnic list
  D. esxcli network ifconfig get
  B. esxcli network nic list

  ---

  Command:

  network nic list

  Description:

  This command will list the Physical NICs currently installed and loaded on the system.

  Reference: https://pubs.vmware.com/vsphere-50/index.jsp?topic=%2Fcom.vmware.vcli.ref.doc_50%2Fesxcli_network.html