VMware VMware Certifications 3V0-624 Questions & Answers

• Question 21:

  A customer is virtualizing a mission-critical Microsoft SQL database and needs a configuration that provides optimal NUMA performance.

  1.

  There are two possible clusters that the database virtual machine could reside in: Cluster A is vSphere 6.0 and Cluster B is vSphere 6.5.

  2.

  All ESXi hosts contain dual Intel Xeon E5-2650 v3 processors (ie: 2 socket, 10 cores per socket) and 256Gb RAM with vNUMA in its default configuration. Given this scenario, which three statements are true? (Choose three.)

  A. Enabling CPU Hot Add on a virtual machine will disable vNUMA.

  B. Placing a 10 vCPU VM in Cluster A and configuring it with 2 Sockets and 5 Cores Per Socket will result in 2 vNUMA nodes.

  C. Placing a 10 vCPU VM in Cluster B and configuring it with 2 Sockets and 5 Cores Per Socket will result in 2 vNUMA nodes.

  D. Enabling Memory Hot Add on a virtual machine will disable vNUMA.

  E. Placing the VM in Cluster B and configuring it with 5 Sockets and 2 Cores Per Socket will result in 1 vNUMA node.

  Correct Answer: ABC

  Enabling CPU Hot-Add disables vNUMA: https://kb.vmware.com/s/article/2040375

  As for the vNUMA in ESXi 6.0 vs 6.5, there have been some major changes. Really good article explaining it here: https://blogs.virtualmaestro.in/2018/05/vnuma-vmware-vsphere-65.html. Essentially, in 6.0 you defined the vNUMA domain by specifying Cores and Sockets (As described in the example). In 6.5, it is abstracted (simply multiplies Sockets and Cores together) and vSphere automatically decides the optimal vNUMA setting. In the example above, the 10 vCPU's can fit on a single NUMA domain.

  https://kb.vmware.com/s/article/2040375 http://www.techspresso.com/vm-sizing-best-practices-in-vsphere/ https://blogs.vmware.com/performance/2017/03/virtual-machine-vcpu-and-vnuma-rightsizing-rules-of-thumb.html

• Question 22:

  A solution architect has been tasked with designing a new environment that meets the needs of a growing company, and has obtained this information:

  1.

  The current capacity will be exhausted in 180 days, and the new infrastructure must be deployed and in production prior to that.

  2.

  The new severs have a 90-day delivery time.

  3.

  A data center for disaster recovery has been selected, and it is 20 miles way and connected by MPLS.

  4.

  The security team will continue to utilize its current investments and VM Encryption for the new environment.

  5.

  The backup team currently uses Data Domain, and reports show an 8.1 compression and deduplication ratio for backups. Based on the information obtained, which two statements are assumptions for the new design? (Choose two.)

  A. MPLS will be used to connect the two data centers.

  B. There is 180 days left of current capacity.

  C. Data Domain will get an 8:1 compression and deduplication ratio with the new workloads.

  D. A disaster will NOT affect both data centers.

  Correct Answer: AD

  A is not an assumption as its clearly stated that "20 miles away and connected by MPLS"B is a risk, having 1/2 year left before you run out of space is a crisis

• Question 23:

  Which of the following needs to be considered when determining the amount and size of thehosts required for a virtual design?

  A. Aggregate CPU and memory requirements

  B. Future growth

  C. Number of vCPUs to be hosted per box

  D. All of the above

  Correct Answer: D

• Question 24:

  A company's CTO is very concerned about web server outages that are caused by server hardware failures. Which feature can protect the web server virtual machine from this kind of outage?

  A. vCenter High Availability

  B. Proactive High Availability

  C. High Availability Orchestrated Restart

  D. High Availability Admission Control

  Correct Answer: B

  "Proactive HA integrates with select hardware partners to detect degraded components and evacuate VMs from affected vSphere hosts before an incident causes a service interruption" https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.avail.doc/GUID-3E3B18CC-8574-46FA-9170-CF549B8E55B8.html https://www.altaro.com/vmware/vsphere-6-5-proactive-ha-works/

• Question 25:

  A company has requested that vSphere Virtual Machine Encryption be included in a vSphere 6.5 deployment design to meet the security requirements specified by its compliance team.

  Which three design considerations would apply in this case? (Choose three.)

  A. RDM virtual machine disk configurations are NOT supported.

  B. Suspend/resume operations for an encrypted virtual machine are NOT supported.

  C. OVF Export is NOT supported for an encrypted virtual machine.

  D. Encryption performance is independent of CPU and storage speed.

  E. Cloning of encrypted virtual machine is NOT supported.

  Correct Answer: BDE

• Question 26:

  The customer has two sites that must operate independently of each other in the event of a WAN failure. During normal operations, administrators from each site must be able to manage the other site through the vSphere Web Client.

  Which vCenter Server Appliance (VCSA) and Platform Services Controller (PSC) diagram shows the VMware-recommended design that satisfies these requirements?

  

  

  A. Exhibit A

  B. Exhibit B

  C. Exhibit C

  D. Exhibit D

  Correct Answer: D

  https://www.opvizor.com/understanding-the-impacts-of-mixed-version-vcenter-server-deployments/

• Question 27:

  A company has developers located in Eastern Europe (EE) and a QA Department in Bermuda.

  1.

  The company is planning to create an environment based on a blueprint of 4-8 virtual machines for each of the developers and one for every QA project.

  2.

  The proposed configuration will allow each developer to work independently and be able to collapse and re-create the environment as needed.

  3.

  QA Teams will be able to recreate the environment that is required for a specific application.

  4.

  Individual virtual machines in the blueprint are being continually updated with newly available software packages.

  5.

  The company is planning to use the vSphere Content Library to store images and synchronize them between sites.

  Which four supported configurations can the company implement? (Choose four.)

  A. EE and Bermuda libraries that are backed by an NFS file system.

  B. EE and Bermuda vCenter Servers with Enhanced Linked Mode.

  C. FTP protocol to transfer data between published in EE and subscribed in Bermuda libraries.

  D. Published library in EE backed by an NFS file system while subscribed library in Bermuda is backed up by datastore.

  E. A minimum 10 GbE connection between EE published and Bermuda subscribed libraries is required.

  F. EE and Bermuda vCenter Servers without Enhanced Linked Mode.

  Correct Answer: ABDF

  You can eliminate C and E as FTP isn't supported natively and without more information there is no need for a 10GbE connection. 1GbE may suffice. Not to mention a 10GbE connection between EE and Bermuda would be nearly impossible and if it even is that would be completely cost-prohibitive. At that point it's cheaper to move your entire QA team to EE ?or even better, move your whole operation to Bermuda.

  10Gbps is not a requirement, and you can only store the items either on VMFS or NFS: https://pubs.vmware.com/vsphere-6-5/index.jsp?topic=%2Fcom.vmware.vapi.progguide.doc%2FGUID-0B234875-EEEB-4982-9FC1-4DE6B071BDC9.htmlGreat link provided by Megalodon.

• Question 28:

  A ompany Is in the piocess of deploying a modern video news-streaming application.

  1.

  The application is capable of scaling (expanding and collapsing) its streaming nodes in the form of virtual machines, based on demand.

  2.

  To host the application, the company decided to implement a new VMware cluster with vSphere 6.5.

  3.

  The company wants to understand Network-Aware DRS and its ability to enhance the streaming application performance. How can Network-Aware DRS help in this scenario?

  A. Network-Aware DRS is a new low-level feature that will work in the background with very limited visibility to the administrator.

  B. Network-Aware DRS will only make sure that the host has sufficient network resources along with compute resources required by the virtual machine.

  C. Network-Aware DRS will display the host network load distribution under the Manage Tab in the vSphere Web Client.

  D. Network-Aware DRS will balance network load the same way as it manages the CPU and memory load.

  Correct Answer: D

• Question 29:

  A development team must provide layer 2 network isolation between virtual machines that are in the same VLAN. The solutions architect must provide additional security between the virtual machines on the same subnet. How can this be done without consuming more VLANs?

  A. Use Virtual Switch Tagging

  B. Use Private VLANs.

  C. Use Virtual Guest Tagging.

  D. Use External Switch Tagging.

  Correct Answer: B

  Private VLANs are used to solve VLAN ID limitations by adding a further segmentation of the logical broadcast domain into multiple smaller broadcast subdomains. Private VLANs are Promiscuous, Secondary VLANs can be either Isolated or Community?

• Question 30:

  A developer is tasked with building an application to process shipping requests. The developer is consulting the vSphere team to determine failover options and performance best practices.

  1.

  The development team is providing three physical ESXi hosts with 8 CPU cores and 256G8 of RAM per host.

  2.

  The developer does NOT know how many virtual machines they will require.

  Which virtual machine (VM) sizing strategy will provide the highest level of uptime, individual VM performance, and failover capacity?

  A. A few large 8 vCPU VMs per host protected by vSphere HA.

  B. Many small 1 vCPU VMs participating in an OS level clustered application protected by vSphere HA.

  C. A few large 8 vCPU VMs per host protected by vSphere Fault Tolerance.

  D. Many small l vCPU VMs participating in an OS level clustered application protected by vSphere Fault Tolerance.

  Correct Answer: A

  Matching vCPU with the physical CPU cores provides best performance. However, we don't know how many VMs are required, therefore there's a risk of a high CPU overcommitment (especially in case of failover), which will impact on performance. Also, if the application doesn't need/use 8 cores, their use will be scheduled anyway therefore wasting resources (we don't know that, but if 1 vCPU is enough for the application then it would be counterproductive to configure it with 8