Free VMware 2V0-15.25 Exam Dumps July 2026

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 upgrading from VCF 5.0 to VCF 9.0, the upgrade workflow requires that the SDDC Manager be upgraded first before any other component bundles (vCenter, ESX, NSX) become visible. This is explicitly stated in the VMware Cloud Foundation upgrade process: the upgrade bundles for the management domain components are dependent on the SDDC Manager version. The online depot will not present the 9.0 upgrade bundles for vCenter, ESX, or NSX until the SDDC Manager itself has reached the target major version (in this case, 9.0).

This is because SDDC Manager contains the updated Lifecycle Management (LCM) engine and updated bundle manifests, which are required to understand, download, and orchestrate the remaining component upgrades. Attempting to download the other bundles without upgrading SDDC Manager first is not supported.

Options B and D (download tools) are incorrect because the issue is not that the bundles are missing from the depot, but that SDDC Manager 5.x cannot interpret 9.0 component bundles. Option C (upgrade to 5.2 first) is also incorrect because the VCF 5.x 9.x upgrade path is directly managed by the upgrade planner once SDDC Manager is upgraded.

Thus, the correct resolution is to upgrade the SDDC Manager to 9.0, after which the remaining component bundles will become available.

In VMware Cloud Foundation 9.0, a Provider Gateway in VCF Automation is always backed by an existing Tier-0 or Tier-0 VRF gateway in NSX. When the administrator launches the Create Provider Gateway workflow and no Tier-0 gateways appear for assignment, this indicates that VCF Automation cannot discover any valid Tier-0 gateways in the associated region.

The VMware Cloud Foundation 9.0 documentation explicitly states that before adding a Provider Gateway, an administrator must first create an Active-Standby Tier-0 Gateway in NSX Manager. The Provider Gateway workflow only lists Tier-0 gateways that already exist and are properly configured in NSX. If none are present, the list will be empty.

From the documentation: ''To add a provider gateway, first you must create an Active Standby tier-0 gateway in the NSX Manager associated with the region to back it.'' . Provider gateways in VCF Automation are discovered from these preexisting Tier-0 gateways and cannot be created until they exist.

Creating a Tier-1 gateway (Option B) does not satisfy the requirement because Provider Gateways must map specifically to Tier-0, not Tier-1. Retrying the workflow (Option D) will not resolve the issue because the Tier-0 backing resource is missing. Creating a new region (Option A) is unnecessary unless required for other organizational reasons, and it still would not produce a Tier-0 gateway.

Therefore, the correct and verified solution is to log in to NSX Manager and create the required Tier-0 gateway, after which it will appear in the Provider Gateway creation workflow.

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.

In VMware Cloud Foundation (VCF) 9.0, the management of appliance credentials and lifecycle operations is centralized within the VCF Operations Fleet Manager (which subsumes the roles of the legacy SDDC Manager Life Cycle Management).

The Problem: The administrator is unable to log in as root via the console or SSH. This indicates a credential synchronization issue or account lockout, which prevents them from manually enabling SSH via the console (the traditional method).

The Solution (Remediate Password): The 'Remediate Password' workflow in VCF Operations allows the administrator to reset and synchronize the root password for VCF components (like the VCF Ops instance itself) directly from the management plane.

By navigating to Fleet Management > Passwords (or similar path in VCF 9.0), the administrator can select the affected instance and choose Remediate.

This process updates the password in the centralized database and on the appliance, restoring the ability to log in.

Once the root access is restored via remediation, the administrator can then proceed to enable SSH (either via the VCF Operations settings UI or the console). Without the correct password (which 'Remediate' fixes), SSH cannot be enabled.

Note: Options A and B (Reset/Reboot) are legacy manual steps that do not ensure the VCF inventory database is updated, potentially leading to further 'configuration drift' or sync errors. Option C is unnecessary for a credential issue.

In vSAN ESA or OSA networking configured through a dedicated vSphere Distributed Switch (vDS), each vSAN vmkernel port must have at least one Active physical uplink available at all times. The scenario describes a vDS with two physical adapters and two uplinks, but after failure of the active uplink, vSAN traffic was lost. This only occurs when the second physical NIC is not actually assigned to the vSAN port group---typically because its uplink is set to ''Unused''.

In such a misconfiguration:

vSAN traffic only uses the single active uplink.

When that uplink fails, vSAN has no failover path, causing immediate connectivity loss.

Option A (storage policies) does not affect network uplink behavior. Option B (VLAN tagging) could cause connectivity failure but would not suddenly break only after an uplink failure. Option D (failover policy not allowing fallback) affects recovery order, not immediate redundancy.

In VMware Cloud Foundation 9.0, supplemental storage such as NFS is fully supported for workload domains when configured correctly. When an NFS datastore mounts successfully in vSphere but users cannot write data, the issue almost always lies in the export permissions on the NFS server. vSphere will allow mounting a read-only NFS export, but write operations will fail silently at the VM or guest OS level.

VCF documentation confirms that ESXi requires explicit read/write export permissions, typically configured per-host or by IP subnet, on the NFS server. Even if network connectivity and VM-level access appear healthy, incorrect server-side permissions prevent ESXi from executing write operations.

Option A is incorrect because NFS servers are not validated by the HCL for write capability. Option B (rebooting the host) is unnecessary and unrelated to permission enforcement. Option D (MTU mismatch) may cause performance issues, not write-access failures.

Thus, the next troubleshooting step is to verify that the ESXi hosts have read/write access on the NFS share, making C the correct answer.