2V0-621 Online Practice Questions and Answers

Correct Answer: A

Explanation: Please refer to this link to understand the situation and how to mitigate it: https:// kb.vmware.com/selfservice/microsites/search.do?language=en_USandcmd=displayKCandexternalId=2073021

Correct Answer: A

Explanation: You can use vCLI network commands to view network statistics and troubleshoot your networking setup. The nested hierarchy of commands allows you to drill down to potential trouble spots.

1. List all virtual machine networks on a host.

esxcli network vm list The command returns for each virtual machine the World ID, name, number of ports, and networks, as in the following example.

Reference: https://pubs.vmware.com/vsphere51/index.jsp?topic=%2Fcom.vmware.vcli.examples.doc% 2Fcli_manage_networks.11.4.html

Correct Answer: ABC

Explanation: Please find link to understand more about the connectivity issues https://kb.vmware.com/ selfservice/microsites/search.do?language=en_USandcmd=displayKCandexternalId=1003893

Correct Answer: AB

A and B Analyzing esxtop columns

Refer to this table for relevant columns and descriptions of these values: Column Description CMDS/s This is the total amount of commands per second and includes IOPS (Input/Output Operations Per Second) and other SCSI commands such as SCSI reservations, locks, vendor string requests, unit attention commands etc. being sent to or coming from the device or virtual machine being monitored. In most cases, CMDS/s = IOPS unless there are a lot of metadata operations (such as SCSI reservations) DAVG/cmd This is the average response time in milliseconds per command being sent to the device. KAVG/cmd This is the amount of time the command spends in the VMkernel. GAVG/cmd This is the response time as it is perceived by the guest operating system. This number is calculated with the formula: DAVG + KAVG = GAVG

Link: https://kb.vmware.com/selfservice/microsites/search.do? language=en_USandcmd=displayKCandexternalId=1008205 And, BIOS: https://kb.vmware.com/selfservice/microsites/search.do? language=en_USandcmd=displayKCandexternalId=1018206

Correct Answer: A

If you perform a fresh install that includes an external Platform Services Controller, install the Platform Services Controller first and replace the VMCA root certificate. Next, install other services or add ESXi hosts to your environment. If you perform a fresh install with an embedded Platform Services Controller, replace the VMCA root certificate before you add ESXi hosts. If you do, all certificates are signed by the whole chain, and you do not have to generate new certificates. Reference https://docs.vmware.com/en/ VMware-vSphere/6.0/com.vmware.vsphere.install.doc/GUID-4469A6D3-048A-471C-9CB4518A15EA2AC0.html

Correct Answer: B

Explanation: Procedure

1.

Connect to the DCUI of the host.

2.

From the Network Restore Options menu, select Restore vDS.

3.

Configure the uplinks and optionally the VLAN for the management network.

4.

Apply the configuration.

The DCUI creates a local ephemeral port and applies the values you provided for the VLAN and uplinks.

The DCUI moves the VMkernel adapter for the management network to the new local port to restore

connectivity to vCenter Server.

Next Steps:

After the connection of the host to vCenter Server is restored, correct the configuration of the distributed

port group and re-add the VMkernel adapter to the group. For information about networking rollback,

recovery, and restore, see the vSphere Networking documentation: Wait until vCenter Server applies the

settings within the next 24 hours.

Correct Answer: AC

: The upgrade of a NIOC to version 3 is disruptive. Certain functionality is available only in NIOC v2 and is removed during the upgrade to version 3: User-defined network resource pools including all associations between them and existing distributed port groups You can preserve certain resource allocation settings by transferring the shares from the user-defined network resource pools to shares for individual network adapters. Existing associations between ports and user-defined network resource pools In Network I/O Control version 3, you cannot associate an individual distributed port to a network resource pool that is different from the pool assigned to the parent port group. CoS tagging of the traffic that is associated with a network resource pool Network I/O Control version 3 does not support marking traffic that has higher QoS demands with CoS tags. After the upgrade, to restore CoS tagging of traffic that was associated with a user-defined network resource pool, use the traffic filtering and marking networking policy.

Reference: http://www.virten.net/2015/09/vcp6-delta-part-7-network-enhancements/

Correct Answer: A

Install vCLI or deploy the vSphere Management Assistant (vMA) virtual machine. See Getting Started with vSphere Command-Line Interfaces. For troubleshooting , run esxcli commands in the ESXi Shell. Procedure Reference: https://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vsphere.upgrade.doc %2FGUID-F0FE86AB-70B1-4E7E-A209-E5C5E0A4E57A.html

Correct Answer: ABC

Explanation: Before you upgrade the virtual hardware:

1. Create a backup or snapshot of the virtual machine. For more information, see:

1.

Take a Snapshot in the vSphere Web Client section in the vSphere 5.1 Virtual Machine Administration guide.

2.

Take a Snapshot in the vSphere Client section in the vSphere 5.1 Virtual Machine Administration guide.

2.

Upgrade VMware Tools. On Microsoft Windows virtual machines, if you upgrade the virtual hardware before you upgrade VMware Tools, the virtual machine might lose its network settings.

3.

Verify that all .vmdk files are available to the ESXi/ESX hosts on a VMFS 3, VMFS 5, or NFS datastore.

4.

Verify that the virtual machines are stored on VMFS 3, VMFS 5 or NFS datastores.

5.

Determine the version of the virtual hardware by selecting the virtual machine from the vSphere Client or vSphere Web Client and clicking the Summary tab. The VM Version label in the Compatibility field displays the virtual hardware version

Reference: https://kb.vmware.com/selfservice/microsites/search.do? language=en_USandcmd=displayKCandexternalId=1010675

Correct Answer: B

The vCenter Server installation or uninstallation process might fail or stop responding on Windows Server

2008 R1 SP2

The Windows Installer on Windows Server 2008 R1 SP2 has issues with handling multiple packages.

Because of these issues the vCenter Server installation might stop responding, or if you attempt to install

and uninstall vCenter Server a few times, the process might fail.

Workaround: Apply the patch from Microsoft KB 981669 which addresses the Windows Installer issue.

Reference: https://www.vmware.com/support/vsphere6/doc/vsphere-esxi-vcenter-server-60-releasenotes.html#compatibility