VMware VMware Certifications 2V0-621 Questions & Answers

• Question 21:

  Which three parameters should be considered when calculating the bandwidth for vSphere Replication? (Choose three.)

  A. Data change rate

  B. Traffic rates

  C. Link speed

  D. Application type

  E. Hardware type

  Correct Answer: ABC

  Explanation: The amount of network bandwidth that vSphere Replication requires to replicate virtual machines efficiently depends on several factors in your environment.

  1.

  Network-based storage

  2.

  Size of dataset

  3.

  Data change rate

  4.

  Recovery point objective (RPO)

  5.

  Link speed

  Reference: https://kb.vmware.com/selfservice/microsites/search.do? language=en_USandcmd=displayKCandexternalId=2037268

• Question 22:

  When importing an existing SSL certificate into vSphere Replication Server, which file format is required?

  A. PKCS#12

  B. DER

  C. PEM

  D. PKCS#7

  Correct Answer: A

  Converting the signed certificate to PKCS#12 format After you receive the certificate (ending in .cer or .crt) from your certificate authority. It must be converted to the PKCS#12 format. To convert it requires key files you generated while generating the certificate request and the signed certificate:

  1.

  Copy the signed certificate file to the server where you generated the certificate signing request.

  2.

  Use OpenSSL to generate the PKCS#12 certificate: openssl pkcs12 -export -in protected.cer -inkey protected.key -name "vrprot" -passout pass:replication55 out protected.p12 openssl pkcs12 -export -in recovery.cer -inkey recovery.key -name "vrdr" -passout pass:replication55 -out recovery.p12

  Reference: https://kb.vmware.com/selfservice/microsites/search.do? language=en_USandcmd=displayKCandexternalId=2080395

• Question 23:

  A vSphere Replication user needs to connect a source site to a target site.

  What privilege is needed at both sites?

  A. VRM remote.Manage VRM

  B. VRM datastore mapper.Manage

  C. Host.vSphere Replication.Manage replication

  D. Virtual machine.vSphere Replication.Manage replication

  Correct Answer: A

  

  Reference: https://pubs.vmware.com/vsphere51/index.jsp?topic=%2Fcom.vmware.vsphere.replication_admin.doc% 2FGUID-A73BC0B8-CA53-4E0E-91F6-17451BB4CAE8.html

• Question 24:

  Which two capabilities does the vSphere Replication Client Plug-in provide? (Choose two.)

  A. Configure connections between vSphere Replication Sites.

  B. Deploy and register additional vSphere Replication Servers.

  C. Reconfigure the vSphere Replication Server.

  D. Configure an external database for a vSphere Replication Site.

  Correct Answer: AB

  Explanation: vSphere Replication Client Plug-In

  The vSphere Replication appliance adds a plug-in to the vSphere Web Client.

  You use the vSphere Replication client plug-in to perform all vSphere Replication actions.

  1.

  Configure connections between vSphere Replication sites.

  2.

  View all vCenter Server instances that are registered with the same SSO and status of each vSphere Replication extension.

  3.

  Deploy and register additional vSphere Replication servers.

  4.

  Configure the replication of individual or multiple virtual machines.

  5.

  View incoming and outgoing replications.

  6.

  Monitor and manage the status of the replications.

  7.

  Recover virtual machines.

  Reference: https://pubs.vmware.com/vsphere55/index.jsp?topic=%2Fcom.vmware.vsphere.replication_admin.doc% 2FGUID-DEFB63AE-C60C-4606-9F1C-E1B270CA408A.html

• Question 25:

  Refer to the Exhibit.

  

  -- Exhibit -

  An administrator has created the DRS cluster shown in the Exhibit.

  Based on the exhibit, which statement is true?

  A. Under CPU contention, Prod-VM1 receives four times the CPU resources than Test-VM1.

  B. The Prod-VM1 will always have more CPU resources than all other virtual machines.

  C. The Test-VM2 will always have less CPU resources than all other virtual machines.

  D. Under CPU contention, Test-VM1 will receive 25% of the total CPU resources.

  Correct Answer: A

  To understand limits and theory check the information given below:

  1.

  CPU is calculated like this: [Cluster CPU Cores] * [ 2,000 for High, 1,000 for Normal, 500 for Low ]

  2.

  For an example, Our DRS cluster has 100 CPU cores (see the blue section) and thus the math is: 100 *

  2,000 = 200,000 for High and 100 * 500 = 50,000 for Low.

  That's why PROD-VM1 : CPU shares High.

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

• Question 26:

  VMware vSphere Replication protects virtual machines from partial or complete site failures by replicating the virtual machines between which three sites? (Choose three.)

  A. From a source site to a target site.

  B. From within a single site from one cluster to another.

  C. From multiple source sites to a shared remote target site.

  D. From a single source site to multiple remote target sites.

  E. From multiple source sites to multiple remote target sites.

  Correct Answer: ABC

  Overview of VMware vSphere Replication VMware vSphere Replication is an extension to VMware vCenter Server that provides hypervisor-based virtual machine replication and recovery. vSphere Replication is an alternative to storage-based replication. It protects virtual machines from partial or complete site failures by replicating the virtual machines between the following sites:

  1.

  From a source site to a target site

  2.

  Within a single site from one cluster to another

  3.

  From multiple source sites to a shared remote target site

  Reference: https://pubs.vmware.com/vsphere55/index.jsp?topic=%2Fcom.vmware.vsphere.replication_admin.doc% 2FGUID-C987AD18-7C2D-4FA6-B6E4-6B0DDA915A7A.html

• Question 27:

  Refer to the Exhibit.

  

  An administrator has configured a vSphere 6.x DRS cluster as shown in the Exhibit.

  Based on the exhibit, which statement is true?

  A. A virtual machine can be powered on in the Test Resource Pool with a 6 GB Memory Reservation.

  B. A virtual machine can be powered on in the Dev Resource Pool with a 8 GB Memory Reservation.

  C. A virtual machine from both the Test Resource Pool and the Dev Resource Pool can be powered on with a 4 GB Memory Reservation.

  D. No more virtual machines can be powered on due to insufficient resources.

  Correct Answer: A

  A virtual machine can be powered on in the Test Resource Pool with a 6 GB Memory Reservation because: Total is 8GB 1Gb used by test resource pool VM which is powered on and 2gb by Test dev pool VM powered on hence distribution is less and expandable memory quota is more/left.

  To understand limits and theory check the information given below: Memory Maximums The ESXi host maximums represents the limits for ESXi host memory. Table 3-2. ESXi Host Memory Maximums Item Maximum RAM per host 6 TB 12 TB is supported on specific OEM certified platform. See VMware Hardware Compatibility Limits for guidance on the platforms that support vSphere 6.0 with 12 TB of physical memory. Number of swap files 1 per virtual machine

  And, Resource Pool Resource pools per host 1600 Children per resource pool 1100 Resource pool tree depth 8 Additional 4 resource pools are used by system internals. Resource pools per cluster 1600

  Configuration Maximums - vSphere 6.0 - VMware https://www.vmware.com/pdf/vsphere6/r60/vsphere-60-configuration-maximums.pdf

• Question 28:

  Which three statements are true when restoring a Resource Pool Tree? (Choose three.)

  A. Distributed Resource Scheduler must be set to manual.

  B. Restoring a snapshot can only be done on the same cluster from which it was taken.

  C. No other resource pools can be present in the cluster.

  D. Restoring a resource pool tree must be done in the vSphere Web Client.

  E. Enabling Enhanced vMotion Compatibility on the cluster is required.

  Correct Answer: BCD

  Restore a Resource Pool Tree in the vSphere Web Client

  You can restore a previously saved resource pool tree snapshot.

  Prerequisites

  1.

  vSphere DRS must be turned ON.

  2.

  You can restore a snapshot only on the same cluster that it was taken.

  3.

  No other resource pools are present in the cluster.

  Reference: https://pubs.vmware.com/vsphere51/index.jsp?topic=%2Fcom.vmware.vsphere.resmgmt.doc%2FGUID43B3A1EF-B7FF-421C-96FA-33FA230688BB.html

• Question 29:

  An administrator has created a resource pool named Marketing HTTP with a Memory Limit of 24 GB and a CPU Limit of 10,000 MHz.

  The Marketing HTTP resource pool contains three virtual machines:

  1.

  Mktg-SQL has a memory reservation of 16 GB.

  2.

  Mktg-App has a memory reservation of 6 GB.

  3.

  Mktg-Web has a memory reservation of 4 GB.

  What would happen if all three virtual machines are powered on?

  A. All three virtual machines can power on, but will have memory contention.

  B. All three virtual machines can power on without memory contention.

  C. Only two of the three virtual machines can power on.

  D. Only one of the virtual machines can power on.

  Correct Answer: C

  Applying a limit on a vCPU and memory will slow your VM down no matter what because of distribution of resources. Even if there are no other VMs running on that 4 socket quad core host. Powering on all the virtual machine will enables 100% resources to be used by VM hence, only few required VM's will powered "On" which requires the maximum utilization from the available resources. Example: When a single (or two) VM has a limit of 5000MHz and 16GB, 6 GB Memory = 22gb utilization will be high and is the only VM running on a host than it will run it full speed as it will be constantly rescheduled for 5000MHz and maximum memory (22-24 GB) Check: https://kb.vmware.com/selfservice/microsites/search.do? language=en_USandcmd=displayKCandexternalId=2032906 Or Resource Pool Metrics: https://pubs.vmware.com/.../GUID-6F436275-169F-4DE5-B393-3B771623C0F8.htm.

• Question 30:

  What command line utility can be used to upgrade an ESXi host?

  A. esxcli

  B. esxupdate

  C. vihostupdate

  D. esxcfg

  Correct Answer: A

  ESXi Command-line interface - esxcli

  Using the vSphere Command Line Interface (CLI), you can upgrade ESXi 5.x hosts to version 6.0.

  For more information about upgrading ESXi 5.x hosts using esxcli commands, see the Upgrading Hosts by

  Using esxcli Commands

  Reference: https://kb.vmware.com/selfservice/microsites/search.do?

  language=en_USandcmd=displayKCandexternalId=2109711