3V0-23.25 Sample Questions & Answers
Deploying vSAN clusters, stretched clusters and two-node setups inside workload domains carries the most weight, next to telling HCI from traditional storage, vSAN OSA versus ESA components, sizing a storage solution, and monitoring and troubleshooting vSAN.
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- Question 1Intermediate
Install, Configure, Administrate the VMware Solution · Configure vSAN Encryption
An administrator needs to enable data-at-rest encryption on a new vSAN ESA cluster within VCF 9.0. The organization has strict security policies requiring the separation of key management from the virtualization platform. Which component must be configured before enabling vSAN data-at-rest encryption on the cluster?
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Correct answer: C
To meet the requirement of separating key management from the virtualization platform, the administrator must configure a Standard Key Provider that establishes a trust relationship with an external Key Management Server (KMS) compliant with KMIP. The Native Key Provider (NKP) runs within vCenter and does not meet the 'separation' requirement.
- Question 2Intermediate
Install, Configure, Administrate the VMware Solution · Deploy a VCF Workload Domain cluster with supported (non-vSAN) Storage
During the deployment of a new VCF 9.0 Workload Domain, an architect selects NFSv3 as the principal storage. Which prerequisite must be met in VCF for this configuration to succeed?
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Correct answer: C
Network pools automatically assign static IP addresses to vSAN, NFS, iSCSI and vMotion VMkernel ports. For NFS principal storage the network pool must contain the vMotion and NFS networks, and VCF docs state that to use external NFS or VMFS on FC storage you must create a new network pool. The network pool must exist and support the selected storage type before host commissioning. NFS v3 requires root access to the export (no_root_squash), and jumbo frames are recommended rather than prohibited.
- Question 3Advanced
Troubleshoot and Optimize the VMware Solution · Troubleshoot and Resolve Issues with VMware vSAN Storage
A VCF administrator is troubleshooting a vSAN ESA cluster that is reporting high latency. The cluster uses RAID-6 storage policies. Upon inspection, the administrator notices that the 'Congestion' metric in the vSAN Performance Service is consistently high. What is the most likely cause of this behavior in an ESA architecture?
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Correct answer: A
vSAN congestion is a backpressure signal from the local storage layer. The VOB esx.problem.vsan.lsom.congestionthreshold is defined as 'vSAN device memory or SSD congestion', and esxcli vsan debug disk list reports Congestion Health per device. Sustained high congestion therefore means the backend devices, or the resources that front them, cannot absorb the incoming write rate, so vSAN slows guest I/O. Network problems show up instead as network latency or packet loss in the performance and network health views, which the I/O Trip Analyzer can separate by layer.
- Question 4IntermediateSelect 2
Install, Configure, Administrate the VMware Solution · Configure the vSAN File Service
Which two statements accurately describe the implementation of vSAN File Services in a VCF 9.0 environment? (Select TWO)
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Correct answers: A, C
vSAN File Service in VCF 9.0 supports up to 500 file shares per vSAN ESA cluster (up from 250 in vSAN 8 U3 ESA; at most 100 of them SMB); vSAN OSA clusters remain at 100 shares. The service is delivered by containers deployed on each host (inside the File Service VM placed on every host) on top of the vSAN Distributed File System (vDFS). A single share cannot be exported by NFS and SMB simultaneously, and no external load balancer is required.
vSAN File Service in VCF 9.0 supports up to 500 file shares per vSAN ESA cluster (up from 250 in vSAN 8 U3 ESA; at most 100 of them SMB); vSAN OSA clusters remain at 100 shares. The service is delivered by containers deployed on each host (inside the File Service VM placed on every host) on top of the vSAN Distributed File System (vDFS). A single share cannot be exported by NFS and SMB simultaneously, and no external load balancer is required.
- Question 5Advanced
Install, Configure, Administrate the VMware Solution · Configure vSAN Cross-Cluster Capacity Sharing and vSAN Storage Clusters
A customer plans to deploy a stretched vSAN storage cluster (formerly vSAN Max) in VCF 9.0. What is the minimum number of data hosts required per site to support this configuration?
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Correct answer: A
The VCF 9.0 design requirement VCF-VSAN-SC-STG-CLU-REQD-CFG-001 for the vSAN Stretched Storage Cluster model is four vSAN nodes per availability zone (8 data nodes in total), because a vSAN storage cluster needs at least four nodes. This is an additional requirement beyond a standard vSAN stretched cluster, whose per-site minimum depends on the storage policy. Seven hosts per site is recommended to support RAID-6 as the secondary level of resilience with a spare host for rebuilds.
- Question 6Beginner
VMware Cloud Foundation (VCF) Products and Solutions · Differentiate Between vSAN OSA and vSAN ESA
True or False: In VCF 9.0, vSAN ESA supports the creation of multiple disk groups per host to isolate failure domains.
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Correct answer: B
False. vSAN ESA uses a single 'Storage Pool' architecture per host, not disk groups. All NVMe devices on a host contribute to this single pool, providing simplified management and improved performance compared to the OSA disk group construct.
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