VMware VCP5-DCV Online Practice Questions and Exam Preparation

VMware VCP5-DCV Online Questions & Answers

• Question 391:

  Under which two conditions can vStorage APIs for Array Integration (VAAI) provide a performance benefit? (Choose two.)

  A. When a virtual disk has VMDK files stored on an NFS datastore.
  B. When a virtual disk is created using the New Virtual Machine wizard.
  C. When cloning a virtual machine with snapshots.
  D. When a virtual disk is deleted.
  A. When a virtual disk has VMDK files stored on an NFS datastore.
  D. When a virtual disk is deleted.

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  Explanation/Reference:

  A) With NFS, the default is alway thin provisioned. Provisioning there should not have much benefit from VAAI offloads, except when you are not creating a thin disk. In that case, you utilize the "space reservation" function of VAAI, which allows you to create an EZT disk, but that doesn't really mean I am creating the disk a lot faster. Actually, I'm not offloading the writing of zeroes at all via NFS, so performance is not the key part of this VAAI function.

  B) The answer doesn't tell met what option is selected, regardless of the option I choose, I can either use features like for example ATS or Write-Same, depending on which type of disk I'm provisioning (obviously this applies to block storage).

  C) VMware KB 1021976 clearly states "VAAI hardware offload cannot be used when: [..] Cloning a virtual machine that has snapshots (or doing a View replica or recompose), because this process involves consolidating the snapshots into the virtual disks of the target virtual machine". So this answer isn't correct in my opinion.

  D) You should distinguish between the deletion of an entire disk, and the space reclaim function for thin provisioning (TP Unmap) which is covered by Cormac here: . The Unmap primitive was http://cormachogan.com/2012/11/08/vaai-comparison-block-versus-nas/ actually introduced with vSphere 5.0, and did include the feature that, when a VM was vMotioned to a different disk, or a VM was deleted, Unmap would reclaim the space. Unfortunately, they noticed that this could cause a performance problem, and they disabled the primitive the vSphere 5.0 patch 2. They then re-enabled it, but as a manual process with vSphere 5.0U1. See: http://blogs.vmware.com/ vsphere/2012/03/vaai-thin-provisioning-block- reclaimunmap-is-back-in-50u1.html

• Question 392:

  Which methods can be used to migrate a VMkernel port from a vSphere Standard Switch to a vSphere Distributed Switch? (Choose two.)

  A. Use the Add Virtual Adapter wizard from the Manage Virtual Adapters window.
  B. Use the Manage Hosts wizard from the Configuration tab of the vDS.
  C. Use the Migrate Virtual Machine Networking option to select the port from a list.
  D. Edit the Network Adapter settings for the port and select a dvPort group from the list.
  A. Use the Add Virtual Adapter wizard from the Manage Virtual Adapters window.
  B. Use the Manage Hosts wizard from the Configuration tab of the vDS.

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  Explanation/Reference:

  Reference: http://www.dashvue.com/2011/04/migrating-to-vnetwork-distributed-switch/

• Question 393:

  Click the Exhibit button.

  

  An administrator is creating a vApp for a multi-tiered web application. The vApp has been configured as shown in the exhibit. Testing of the vApp indicates that attempts to communicate with the web server on Dev_Web_01 fail. The developer wants to be sure the database server OS is completely started before the other servers power on. The developer also wants to minimize recovery time.

  What changes to the vApp configuration will correct the issues?

  A. Move the Dev_Web_01 virtual machine to Group 3 and increase the time value
  B. Move the Dev_App_01 virtual machine to Group 1 and increase the time value
  C. Move the Dev_Web_01 virtual machine to Group 3, decrease the time value and check VMware Tools are ready
  D. Move the Dev_Web_01 virtual machine to Group 3, increase the time value and check VMware Tools are ready
  D. Move the Dev_Web_01 virtual machine to Group 3, increase the time value and check VMware Tools are ready

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  Explanation/Reference:

  By setting it up like D, the Web server is started first, then 120 seconds later SQL, and 120 seconds after that App. By selecting A, it will only affect when Dev_App_01 starts...either 120 seconds or when VMware Tools is ready which would only start the VM even sooner once it detects VMware tools on the first two servers...if VMware tools is even installed on them.

• Question 394:

  Which two precautions should a vSphere administrator take before increasing the size of a VMFS datastore? (Choose two.)

  A. Unmount the datastore
  B. Perform a rescan to ensure that all hosts see the most current storage
  C. Quiesce I/O on all disks involved
  D. Shut down all virtual machines stored in the datastore
  B. Perform a rescan to ensure that all hosts see the most current storage
  C. Quiesce I/O on all disks involved

• Question 395:

  Which installation method is not available for a new deployment of ESXi 5.x?

  A. Update Manager installation
  B. Text-based interactive installation
  C. Scripted installation
  D. Auto Deploy installation
  A. Update Manager installation

• Question 396:

  An administrator has deployed vCenter Data Recovery and wants the largest possible de- duplication store. Which three storage options can be used? (Choose three.)

  A. Two CIFS shares
  B. Two RDMs on a FCP array
  C. One NFS mount on the ESXi host and one RDMs on an iSCSI array
  D. One CIFS share and one FCP RDM
  E. Two NFS mounts on the ESXi host
  B. Two RDMs on a FCP array
  C. One NFS mount on the ESXi host and one RDMs on an iSCSI array
  E. Two NFS mounts on the ESXi host

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  Explanation/Reference:

  VDR supports deduplication stores that are up to one terabyte in size and each backup appliance is limited to using two deduplication stores per appliance ( 1 TB on VMDKs and RDMs and 500 GB on CIFS network shares). To get the largest possible dedup store, we must not use CIFS.

• Question 397:

  An organization has a HA/DRS cluster containing a mixture of ESXi 4.1 and 5.5 hosts in the cluster. An ESXi 5.5 host has failed and HA attempted but failed to restart the virtual machines on another host. HA admission control is disabled.

  What condition could result in this behavior?

  A. A virtual machine has an incompatible hardware version
  B. Insufficient resources exist on the remaining ESXi hosts
  C. vMotion migration is not supported between ESXi 5.5 and 4.1 hosts
  D. HA failover is not supported between ESXi 5.5 and 4.1 hosts
  A. A virtual machine has an incompatible hardware version

• Question 398:

  An ESXi 5.x host disconnects within 60 seconds after the administrator adds it to the vCenter Server inventory. The administrator determines that the issue could be related to a networking problem. Which networking port should the administrator check for connectivity from the host to vCenter Server?

  A. 902
  B. 903
  C. 443
  D. 9443
  A. 902

• Question 399:

  An administrator is creating a virtual machine that will be running Windows 2008 Enterprise (64-bit). The application to be installed in the virtual machine requires eight vCPUs to run effectively. During installation, the only available options are one, two, three, or four vCPUs.

  What condition explains the available vCPU selections?

  A. The virtual machine hardware version is 8.
  B. The guest operating system for the virtual machine is 64-bit.
  C. The ESXi host has two non hyperthreaded dual-core CPUs.
  D. The ESXi host has two hyperthreaded dual-core CPUs.
  C. The ESXi host has two non hyperthreaded dual-core CPUs.

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  Explanation/Reference:

  Reference: http://kb.vmware.com/selfservice/microsites/search.do? language=en_USandcmd=displayKCandexternalId=1010184

• Question 400:

  An administrator has just finished deploying a vApp for a web service. What three options are available to the administrator for IP allocation within the vApp? (Choose three.)

  A. Transient
  B. Fixed
  C. DHCP
  D. Bridged
  E. NAT
  A. Transient
  B. Fixed
  C. DHCP

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  Explanation/Reference:

  Option Description