VMware 2V0-15.25 Exam Dumps

In VMware Cloud Foundation 9.0 with vSAN ESA, storage policies must match the capabilities of the existing cluster. The scenario describes a 5-node vSAN ESA cluster where the vSAN Default Storage Policy is RAID-1 (FTT=1). The administrator attempts to apply a 2 Failures -- RAID-6 policy, which ESA supports only on clusters with at least 7 nodes. Because the cluster has only five nodes, the policy fails immediately---this is expected and documented in the vSAN ESA design specifications.

Since RAID-6 is not an option and capacity is low, the administrator must look for a method to reclaim storage usage without requiring additional nodes or unsupported policy changes. Converting VMs from thick provisioning to thin provisioning is a safe and effective mitigation approach. Thin provisioning reduces consumed space by allowing disks to grow only as needed, immediately recovering unused blocks. This is a standard vSAN-supported method to temporarily alleviate capacity pressure.

Enabling encryption (A) or compression (D) does not reduce capacity usage retroactively and may actually increase overhead. Using RAID-5 (B) is also not possible because RAID-5 requires at least 6 ESA-enabled hosts.

A vSAN cluster network partition occurs when vSAN nodes cannot communicate over the designated vSAN network. In VMware Cloud Foundation workload domains, the vSAN network relies on L2 adjacency, consistent VLAN configuration, and stable multicast/BUM behavior (in older versions). VCF 9.0 uses unicast-mode vSAN, so multicast-related issues (such as IGMP snooping configuration) are no longer relevant.

A network partition can occur when the VLAN ID on the physical switch port differs from the VLAN configured on the vSphere Distributed Switch (VDS) for the vSAN VMkernel adapters. The documentation emphasizes that consistent VLAN configuration across the physical and virtual network is required for proper vSAN cluster communication. If a switch port is reconfigured---intentionally or accidentally---to use a different VLAN, the node becomes isolated from the rest of the vSAN cluster, causing:

'vSAN cluster partition' warnings in vCenter

degraded performance

objects marked as non-compliant

resyncs that cannot complete

Option A (IGMP snooping) does not apply because modern vSAN uses unicast, not multicast. Option C (Jumbo frames) would cause packet loss only if inconsistently configured, but it does not cause a full network partition. Option D (vSAN Witness on vMotion) is relevant only for stretched clusters and does not cause a partition in a standard four-node cluster.

When troubleshooting NSX on an ESXi host, VMware requires verification that NSX VIBs (vSphere Installation Bundles) are installed and in the correct state. VIBs are responsible for NSX datapath, control-plane modules, and kernel extensions on ESXi. The authoritative and documented method to list VIBs on an ESXi host is the command:

esxcli software vib list

This command displays all installed kernel modules, version numbers, NSX packages, and their installation status. For NSX-T (now part of VCF networking), administrators expect to see VIBs such as nsx-aggservice, nsx-bridge, nsx-esx-datapath, and others. If any required NSX VIBs are missing or inconsistent, the ESXi host will fail to join NSX transport nodes or will show ''Not Ready.''

Option A (esxtop) is for performance monitoring and does not show VIB information. Option C (nsxcli get version) checks NSX version on Edge Nodes or host transport nodes but does not list VIBs. Option D (esxcfg software list) is an outdated and invalid command.

Before applying updates to a vCenter Server Appliance (VCSA), an administrator must validate that all vCenter services are healthy. VMware provides two supported and documented methods for checking vCenter service status:

1. Using the vCenter Appliance Shell

Running the command:

services-control --status

This command displays the status of all vCenter-related services (vmdird, vmcad, vpxd, vsan-health, etc.). It is the authoritative diagnostic tool embedded in the appliance for confirming whether services are running, stopped, or in a degraded state. This method is explicitly documented in vSphere 9.0 service management procedures.

This matches Option B.

2. Using the vCenter Server Management Interface (VAMI)

Accessed at:

https://<vcenter-fqdn>:5480

The VAMI console provides a graphical interface under Services, showing the real-time health, status, and start/stop controls for all vCenter services. VMware documentation instructs administrators to review service status here before performing upgrades or maintenance operations.

This matches Option C.

Incorrect Options Explained

A . vSphere performance charts These show workload data, not service health.

D . vim-top command Displays vSphere hosts' runtime metrics, not vCenter services.

E . Running services.sh on ESXi DCUI vCenter does not run ESXi services; this script is for ESXi hosts only.

In VMware Cloud Foundation, deletion of a workload domain requires that VCF Operations can correctly discover and process the NSX components attached to that domain. The workload domain delete workflow explicitly includes removal of the NSX Manager and NSX Edge components associated with the domain, unless those NSX components are shared.

In earlier and current VCF guidance, VMware state that NSX Edge clusters for a workload domain must be removed using the documented/VCF-aware method (for example, using the NSX Edge removal process referenced in KB 78635, not by deleting objects directly in NSX Manager). If an administrator deletes the NSX Edge cluster directly in NSX Manager, the VCF inventory and orchestration logic still ''believes'' the Edge cluster exists. When the workload domain delete workflow reaches the stage ''Gather input for deletion of NSX component'', it queries NSX / internal state for Edge cluster data. Because the underlying object has been manually removed, the returned structure is null, which results in an internal ''Cannot read the array length because '<locall9>' is null'' style error.

Using the NSX Edge Cluster Deployment Removal Tool as per documentation keeps VCF and NSX in sync and is the supported path, so option A is not the likely cause. Network pools and shared NSX Manager configurations do not match the specific NSX-component array/null condition described.