2V0-621 Online Practice Questions and Answers

Correct Answer: B

Explanation: When promiscuous mode is enabled at the portgroup level, objects defined within that portgroup have the option of receiving all incoming traffic on the vSwitch. Interfaces and virtual machines within the portgroup will be able to see all traffic passing on the vSwitch, but all other portgroups within the same virtual switch do not.

Reference: https://kb.vmware.com/selfservice/microsites/search.do? language=en_USandcmd=displayKCandexternalId=1002934

Correct Answer: AB

Storage DRS is Disabled on a Virtual Disk Even when Storage DRS is enabled for a datastore cluster, it might be disabled on some virtual disks in the datastore cluster. Problem

You have enabled Storage DRS for a datastore cluster, but Storage DRS is disabled on one or more virtual

machine disks in the datastore cluster.

Cause

The following scenarios can cause Storage DRS to be disabled on a virtual disk.

1.

A virtual machine's swap file is host-local (the swap file is stored in a specified datastore that is on the host). The swap file cannot be relocated and Storage DRS is disabled for the swap file disk.

2.

A certain location is specified for a virtual machine's .vmx swap file. The swap file cannot be relocated and Storage DRS is disabled on the .vmx swap file disk.

3.

The relocate or Storage vMotion operation is currently disabled for the virtual machine in vCenter Server (for example, because other vCenter Server operations are in progress on the virtual machine). Storage DRS is disabled until the relocate or Storage vMotion operation is re-enabled in vCenter Server.

4.

The home disk of a virtual machine is protected by vSphere HA and relocating it will cause loss of vSphere HA protection.

5.

The disk is a CD-ROM/ISO file.

6.

If the disk is an independent disk, Storage DRS is disabled, except in the case of relocation or clone placement.

7.

If the virtual machine has system files on a separate datastore from the home datastore (legacy), Storage DRS is disabled on the home disk. If you use Storage vMotion to manually migrate the home disk, the system files on different datastores will be all be located on the target datastore and Storage DRS will be enabled on the home disk.

8.

If the virtual machine has a disk whose base/redo files are spread across separate datastores (legacy), Storage DRS for the disk is disabled. If you use Storage vMotion to manually migrate the disk, the files on different datastores will be all be located on the target datastore and Storage DRS will be enabled on the disk.

9.

The virtual machine has hidden disks (such as disks in previous snapshots, not in the current snapshot). This situation causes Storage DRS to be disabled on the virtual machine.

10.

The virtual machine is a template.

11.

The virtual machine is vSphere Fault Tolerance-enabled.

12.

The virtual machine is sharing files between its disks.

13.

The virtual machine is being Storage DRS-placed with manually specified datastores

Reference: https://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vsphere.troubleshooting.doc% 2FGUID-B749AAA0-7B67-4A79-BEDC-395DFEC9FC60.html

Correct Answer: A

The default Hardware Version of the vRealize Operations Manager virtual machine is 7, limiting the maximum vCPUs selection to 8. You can upgrade the Hardware Version of the Analytics machine to increase the vCPU limit. Theoretically, the performance of PVM should be similar or better than HVM. But, this trend tends to break when the vCPU count increases from 20 vCPUS. This problem is counter intuitive and is only observed in case of vCPUs being greater than 20 physical cores. We classify this problem as sleepy lock anomaly, which occurs due to the usage of paravirtual interface in the ticket spinlock implementation that has been introduced to solve the Lock Holder Preemption problem without the architectural support (i.e. Pause Loop Exiting). Take steps to analyze the scalability behavior of VMs with high core count (till 80 core). Our preliminary study suggests that besides cache contention bottleneck, the usage of ticket spinlock is another culprit for the degradation. We will take a step further and will try to analyze the scalability characteristics of these monster VMs by running other benchsuites from Mosbench. https://www.vmware.com/support/pubs/vrealize-automation-pubs.htm

Correct Answer: C

Give the VMKernel port a label (e.g. iSCSI - if it will purley be used for iSCSI).

Enter the VLAN ID if the pNICs connected to the vSwitch are trunk ports and you have a specific VLAN for

this traffic (e.g. a dedicated storage VLAN).

Now if the port will only be used for storage services (iSCSI and NFS).

If the port will be used for all VMkernel services (iSCSI, NFS, vMotion and FT), tick the additional boxes to

allow this port to be used also for those services, Assigned the FT (IP Address)

Clustering is configured to give you, the administrator of an environment, a form of fault tolerance, and

VMware has taken this concept to a whole other level. Although VMware does not call FT clustering, it

functions the same in that FT will failover the primary virtual machine to a secondary virtual machine.

VMware Fault Tolerance (FT) is based on vLockstep technology and provides zero downtime, zero data

loss, and continuous availability for your applications.

Next,

?Always assign a reasonably high relative share for the Fault Tolerance

resource pool because FT is a very latency-sensitive traffic type.

Correct Answer: BD

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

Correct Answer: A

Configure SSO policies

Password Policy: You can configure the following parameters:

-Description ?Password policy description. Required.

-

Maximum lifetime ?Maximum number of days that a password can exist before it has to be changed.

-

Restrict re-use ?Number of the user's previous passwords that cannot be set again.

-

Maximum length ?Maximum number of characters that are allowed in the password.

-

Minimum length ?Minimum number of characters required in the password.

-

Character requirements ?Minimum number of different character types required in the password.

-

Identical adjacent characters ?Maximum number of identical adjacent characters allowed in the password.

Reference: http://davidstamen.com/certification/section-1-configure-and-administer-vsphere-6x-security/

Correct Answer: A

Correct Answer: ADE

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

Correct Answer: A

During a vCenter Upgrade the VMware HA Agent on all of the ESXi hosts will be updated. ... it's very likely that the HA agent will fail to initialize the first time when the host restarts. During a vCenter Upgrade the VMware HA Agent on all of the ESXi hosts will be updated. After this happens the "require reboot" flag is set on the hosts, as explained in VMware KB 2034945.

Correct Answer: BCD

Procedure

1 Navigate to the vSphere Web Client login page.

2 If the Use Windows session authentication check box is not available,

click Download the Client Integration Plug-in at the bottom of the login page.

3 If the browser blocks the installation by issuing certificate errors or by running a pop-up blocker,

follow the Help instructions for your browser to resolve the problem.

4 Close other browsers if you are prompted to do so.

After installation, the plug-in is available for all browsers.

5 Exit and restart your browser.

After the restart, you can select the Use Windows session authentication check box.

Reference:

https://pubs.vmware.com/vsphere-55/index.jsp?topic=%2Fcom.vmware.vsphere.security.doc%2FGUIDC7BF3BD5-76E6-406F-8CF1-309D31F1DEBA.html