VMware VMware Certifications 5V0-22.23 Questions & Answers

• Question 21:

  A customer wishes to host a new range of applications with high-performance needs, specifically, low latency.

  The applications are required to be hosted at company-owned edge locations, each with minimal rack space (three host slots per edge location for this project).

  Which deployment options would satisfy the customer's needs, while maximizing the amount of capacity available per deployment?

  A. A new three-node vSAN 8.0 All-Flash Cluster with OSA in each edge location Each application VM configured with a RAID-5 VM storage policy

  B. A new three-node vSAN 8.0 All-Flash Cluster with OSA in each edge location Each application VM configured with a RAID-1 VM storage policy

  C. A new three-node vSAN 8.0 All-Flash Cluster with ESA in each edge location Each application VM configured with a RAID-1 VM storage policy

  D. A new three-node vSAN 8.0 All-Flash Cluster with ESA in each edge location Each application VM configured with a RAID-5 VM storage policy

  Correct Answer: B

  Explanation: To satisfy the customer's needs for high-performance, low-latency applications at edge locations, the best deployment option is to use a new three-node vSAN 8.0 All-Flash Cluster with OSA in each edge location and configure each application VM with a RAID-1 VM storage policy. This option will provide the following benefits: All-flash clusters offer the highest performance and lowest latency for vSAN, as they use flash devices for both cache and capacity tiers. Flash devices have faster read and write operations than magnetic disks, and they also support advanced features such as deduplication, compression, and encryption. OSA stands for One Socket Architecture, which means that each host has only one CPU socket with multiple cores. This reduces the licensing cost and complexity of vSphere and vSAN, as well as the power consumption and cooling requirements of the hosts. OSA also improves the performance of vSAN by eliminating the NUMA effect, which is the latency caused by accessing memory or devices across different CPU sockets. RAID-1 is a mirroring technique that creates two copies of each data component and places them on different hosts. This provides high availability and fault tolerance for the application VMs, as they can survive the failure of one host or disk. RAID-1 also offers better performance than RAID-5 or RAID-6, as it does not incur any parity overhead or additional write operations. The other options are not optimal for the customer's needs, as they either sacrifice performance or capacity. Option A uses RAID-5, which is an erasure coding technique that splits each data component into three data segments and one parity segment, and distributes them across four hosts. This reduces the capacity consumption by 25%, but it also increases the write latency and network traffic, as each write operation requires four hosts to participate. Option C uses ESA, which stands for Enterprise Storage Architecture, which means that each host has two CPU sockets with multiple cores. This increases the licensing cost and complexity of vSphere and vSAN, as well as the power consumption and cooling requirements of the hosts. ESA also introduces the NUMA effect, which can degrade the performance of vSAN by adding latency to access memory or devices across different CPU sockets. Option D uses RAID-5 with ESA, which combines the disadvantages of both options A and C.

• Question 22:

  During yesterday's business hours, a cache drive failed on one of the vSAN OSA nodes. The administrator reached out to the manufacturer and received a replacement drive the following day. When the drive failed, vSAN started a resync to ensure the health of the data, and all objects are showing a healthy and compliant state. The vSAN administrator needs to replace the failed cache drive.

  Which set of steps should the vSAN administrator take?

  A. Physically replace the failed cache device, and vSAN will automatically create a new disk group. Then, remove the disk group with the failed device.

  B. Place the disk group into maintenance mode, and select Full Data Migration. Then, physically replace the failed cache device. Afterwards. vSAN will rebuild the disk group automatically.

  C. Remove the existing vSAN disk group and physically replace thedevice. Thencheck to verify that the ESXi host automatically detects the new device Afterwardsmanually recreate the Disk Group.

  D. Physically replace the failed cache device, and vSAN will automatically allocate the storage. Then, rebalance the cache layer.

  Correct Answer: C

  Explanation: To replace a failed cache drive in a vSAN OSA cluster, the vSAN administrator should remove the existing vSAN disk group and physically replace the device. Then check to verify that the ESXi host automatically detects the new device Afterwards manually recreate the Disk Group. This is because when a cache drive fails, it affects the entire disk group that contains it, and vSAN does not allow removing only the cache drive from a disk group. Therefore, the administrator must remove the whole disk group before replacing the cache drive, and then recreate it with the new cache drive and the existing capacity drives. The other options are not correct. Physically replacing the failed cache drive without removing the disk group first might cause errors or inconsistencies in vSAN configuration. vSAN will not automatically create a new disk group or allocate storage after replacing a cache drive, as these actions require manual intervention from the administrator. Rebalancing the cache layer is not necessary after replacing a cache drive, as vSAN will automatically distribute data across all devices in the disk group. References: Replace a Flash Caching Device on a Host; How to manually remove and recreate a vSAN disk group using esxcli

• Question 23:

  A vSAN administrator is investigating vSAN performance related problems but cannot find any vSAN performance statistics on the cluster summary page.

  Why is this situation occurring?

  A. The vRealize Operations Manager is not integrated with vSAN cluster.

  B. The administrator has read-only permissions on the cluster level.

  C. vSAN performance statistics are only available via CLI.

  D. vSAN performance service is not enabled.

  Correct Answer: D

  Explanation: The reason why the vSAN administrator cannot find any vSAN performance statistics on the cluster summary page is that the vSAN performance service is not enabled. The vSAN performance service is a feature that collects and analyzes performance metrics and displays them in graphical charts in vCenter. The vSAN performance service must be turned on manually for each vSAN cluster, as it is not enabled by default. The other options are not correct. The integration of vRealize Operations Manager with the vSAN cluster is not required to view vSAN performance statistics, as they are available in vCenter. The administrator's permissions on the cluster level do not affect the visibility of vSAN performance statistics, as they are accessible to any user who can view the cluster. vSAN performance statistics are not only available via CLI, as they can also be viewed in vCenter using the vSAN performance service. References: About the vSAN Performance Service; Enable or Disable the Performance Service

• Question 24:

  An administrator must choose between deploying a virtual witness or a physical witness for a vSAN Stretched Cluster. The administrator eventually decides to use a virtual witness.

  What is a benefit of selecting this approach?

  A. Increased vSAN datastore capacity

  B. Shared metadata between separate clusters

  C. Reduced vSphere licensing

  D. Additional compute capacity for running VMs

  Correct Answer: C

  Explanation: The correct answer is C, reduced vSphere licensing. This is because using a virtual witness appliance instead of a physical witness host can save on vSphere licensing costs, as the virtual witness appliance does not consume a

  vSphere license. The virtual witness appliance is a preconfigured virtual machine that runs ESXi and is distributed as an OVA file. It can be deployed on any ESXi host that has network connectivity to both data sites of the stretched cluster.

  The virtual witness appliance does not run any virtual machines other than itself and only hosts witness components of virtual machine objects. The other options are incorrect for the following reasons:

  A, increased vSAN datastore capacity, is incorrect because using a virtual witness appliance does not affect the vSAN datastore capacity. The witness appliance does not store any customer data, only metadata, such as the size and UUID of

  vSAN object and components. The witness appliance also does not contribute any storage devices to the vSAN datastore.

  B, shared metadata between separate clusters, is incorrect because using a virtual witness appliance does not enable sharing metadata between separate clusters. The witness appliance is dedicated to one stretched cluster and cannot

  serve as a witness for multiple clusters. The witness appliance maintains consistency between the two data sites of the stretched cluster by hosting witness components that act as tie-breakers in case of a site failure or network partition. D,

  additional compute capacity for running VMs, is incorrect because using a virtual witness appliance does not provide additional compute capacity for running VMs. The witness appliance does not run any VMs other than itself and does not

  participate in any compute operations of the stretched cluster. The witness appliance only hosts witness components that consume minimal CPU and memory resources. References:

  VMware vSAN Specialist v2 Exam Preparation Guide, page 11 Deploying a vSAN Witness Appliance

• Question 25:

  A customer wants to validate if Skyline online health is working for vSAN and finds out that Skyline is not fully configured yet.

  What two requirements must be met to make sure that Skyline online health will work? (Choose two.)

  A. Add the Skyline license into Virtual Center

  B. Enable Skyline Health on the vSAN Cluster

  C. Enable CEIP and join the program

  D. Have a working Internet connection

  E. Have vCenter on version 7 or higher

  Correct Answer: CD

  Explanation: To make sure that Skyline online health will work for vSAN, two requirements must be met: enable CEIP and join the program, and have a working Internet connection. CEIP stands for Customer Experience Improvement Program, which is a voluntary program that collects anonymous product usage data from customers who participate in it. By enabling CEIP and joining the program, customers can benefit from Skyline online health, which provides proactivenotifications and recommendations for software and hardware issues based on VMware Analytics Cloud. A working Internet connection is also required for Skyline online health to communicate with VMware Analytics Cloud and receive online notifications. The other options are not requirements for Skyline online health. References: About the vSAN Skyline Health; Skyline Health

• Question 26:

  An administrator has successfully deployed a vSAN Stretched Cluster and needs to ensure that any virtual machines that are created are placed in the appropriate site.

  Which two steps are needed to complete this task? (Choose two.)

  A. Create VM/Host groups for the two sites

  B. Create a single VM/Host group across both sites

  C. Put the VMs in a vSphere DRS group

  D. Put the VMs in the correct VM group

  E. Create a storage policy that includes site affinity rules and apply to VMs

  Correct Answer: AE

  Explanation: To ensure that any virtual machines that are created are placed in the appropriate site, the administrator needs to create VM/Host groups for the two sites and create a storage policy that includes site affinity rules and apply to VMs. VM/Host groups allow the administrator to group virtual machines and hosts based on their location or preference. Site affinity rules specify which site a virtual machine should be placed on or prefer to run on. A single VM/Host group across both sites would not allow the administrator to control the placement of virtual machines. Putting the VMs in a vSphere DRS group or in the correct VM group would not affect their site affinity. References: 1, page 12; 2, section 3.2

• Question 27:

  What is the maximum amount of capacity disks an administrator can have in disk groups on a single vSAN OSA host?

  A. 35

  B. 40

  C. 30

  D. 25

  Correct Answer: A

  Explanation: The maximum amount of capacity disks an administrator can have in disk groups on a single vSAN OSA host is 35. This is because a single host can have up to five disk groups, and each disk group can have up to seven capacity disks. Therefore, the maximum number of capacity disks per host is 5 x 7 = 35. The other options are not correct, as they are lower than the maximum number of capacity disks per host. References: Designing and Sizing vSAN Storage; [vSAN ReadyNode Hardware Guidance]

• Question 28:

  An administrator is troubleshooting a vSAN performance issue. In the vSAN performance monitor there is a high latency on the vSAN cluster.

  What is a possible cause of this?

  A. The Virtual Machines are using PVSCSI controllers.

  B. Erasure Coding is disabled in the storage policy.

  C. There is congestion in one or more disk groups.

  D. Jumbo frames are not enabled on the VMkernel adapters.

  Correct Answer: C

  Explanation: A possible cause of high latency on the vSAN cluster is that there is congestion in one or more disk groups. Congestion is a measure of how busy the storage devices are in handling I/O requests. When congestion is high, it means that the storage devices are overloaded and cannot process the requests fast enough, resulting in increased latency and reduced throughput. Congestion can be caused by various factors, such as insufficient cache capacity, disk failures, network issues, or heavy workload. The other options are not likely to cause high latency on the vSAN cluster. The Virtual Machines can use PVSCSI controllers without affecting latency, as they are optimized for high performance. Erasure Coding is a space efficiency feature that does not impact latency significantly. Jumbo frames are not required for vSAN, and enabling them does not guarantee lower latency. References: vSAN Performance Monitor; [vSAN Congestion Explained]

• Question 29:

  An administrator is tasked to create a Kerberos secured NFS v4.1 file share. Which information is minimally required during the configuration of the File Service?

  A. Organizational Unit, User Account, Password

  B. Active Directory Domain, User Account, Password

  C. Kerberos Server, User Account, Password

  D. Active Directory Domain. Organizational Unit, User Account. Password

  Correct Answer: B

  Explanation: To create a Kerberos secured NFS v4.1 file share, the administrator needs to provide the following information during the configuration of the File Service:

  Active Directory Domain: The domain name of the Active Directory server that provides Kerberos authentication service for the NFS server and clients. For example, example.com.

  User Account: The user name of the Active Directory account that has permissions to join the NFS server to the domain and create service principal names (SPNs) for the NFS server. For example, [email protected]. Password:

  The password of the Active Directory account that is used for authentication. For example, P@ssw0rd.

  These information are required to enable Kerberos security for NFS 4.1 and allow the NFS server to obtain a Kerberos ticket from the Active Directory server. The administrator also needs to specify the NFS share name, path, and access

  permissions1 References: 1:

  VMware vSphere Storage Guide, page 118

• Question 30:

  The vSphere Client reports that the state of some components stored on the vSAN datastore are in the reconfiguring state.

  Which situation causes components to enter this state?

  A. A host in the cluster enters maintenance mode.

  B. The cluster is recovering from a vSAN failure.

  C. The applied storage policy is modified.

  D. Additional storage capacity is added to the cluster.

  Correct Answer: C

  Explanation: The reconfiguring state indicates that some components stored on the vSAN datastore are being moved or resized to meet a new storage policy requirement. This state can occur when the applied storage policy is modified, such as changing the number of failures to tolerate, stripe width, or object space reservation. The other situations will not cause components to enter this state. References: [VMware vSAN Specialist v2 EXAM 5V0-22.23], page 31