2V0-15.25 Online Practice Questions

Explanation:
When an NSX Admin account becomes locked in NSX Manager, this occurs due to failed login attempts exceeding the lockout threshold for either:
CLI access, API access, or UI login, which is tied to API authentication.
Once locked, the only supported method to recover the NSX admin account is to log in to the NSX Manager console as the root user and manually clear the lockout counters. This is documented in NSX Manager password-recovery procedures and is the standard administrative recovery action.
The root console provides access to:
clear account-lockout admin
or the equivalent reset methods within NSX Manager.
Why the other options are incorrect:
A. SSH into NSX Manager as Admin
Impossible ― the admin account is locked and cannot be used to SSH.
B. Change password age policy in vCenter
NSX Manager accounts are not governed by vCenter password policy.
C. Rotate admin password in SDDC Manager
SDDC Manager rotates NSX passwords when unlocked; it cannot unlock a locked account.

Explanation:
vSphere High Availability (HA) depends on the FDM agent (Fault Domain Manager) that runs on every ESXi host in the cluster. When an administrator enables HA on a cluster, vCenter automatically installs or updates the vmware-fdm VIB on each participating ESXi host. This VIB contains the HA agent binaries and is mandatory for HA services to start.
The error encountered:
"A general system error occurred: Failed to start fdm service on host"
is a classic and well-documented symptom of a missing or corrupted vmware-fdm VIB. When vSphere HA is toggled off and on, vCenter attempts to reinstall or restart the FDM agent; if the VIB is not present, HA cannot deploy successfully, and the FDM service fails to start.
Why the other answers are incorrect:
A. The vmware-fdm service is disabled
ESXi does not allow manual disabling of this system service in normal operations. If the service fails to start, the root cause is usually the absence or corruption of the VIB―not a disabled service.
C. Admission Control settings not configured correctly
Admission Control errors affect VM failover capacity, not the ability to start FDM services.
D. HA startup policy not configured correctly
There is no per-host HA startup policy that prevents FDM from starting.

Explanation:
To collect detailed per-VM CPU metrics―especially CPU Ready (%RDY)―the correct command-line utility on an ESXi host is esxtop. This tool provides real-time, low-level performance data for CPU, memory, disk, and network usage, and is the authoritative method for diagnosing CPU contention issues in VMware environments.
When troubleshooting high CPU Ready times, esxtop allows administrators to:
View CPU contention at the VM level
Inspect co-stop, wait, and scheduling delays
Monitor NUMA distribution and pCPU saturation
Capture historical performance snapshots using batch mode
The other options do not provide the necessary VM-level CPU scheduling metrics:
A. vimtop: Only available on vCenter Server Appliance (VCSA), not ESXi; does not show VM CPU ready.
B. esxcli: Used for configuration and health checks; not for real-time CPU metrics.
C. vim-cmd: Used to manage VMs via vSphere API bindings; not a performance monitoring tool.

Explanation:
This issue stems from an incorrect role assignment during the user creation process in VMware Cloud Director (VCF Automation).
Organization Administrator Role (Option D): This role grants full control, including visibility of the Administration tab (to manage users, groups, and settings), Data Centers, and Monitor tabs. If the user were an Admin, they would see all tabs.
Organization Auditor Role (Option A): This is a read-only role, but by definition, an Auditor can view anything an Organization Administrator can see (including the Administration settings), just without edit rights. Therefore, an Auditor would still see the Administration tab.
Organization User Role (Option B): This is a consumer-level role designed for deploying and managing vApps. By default, this role does not have access to the Administration tab or high-level organization settings. If the organization is new and has no vApps or VDCs populated yet, a user with this role might see a very restricted view (effectively just a dashboard or "Overview") because they lack the rights to see the administrative configuration menus.
Conclusion: The fact that the "Administration" tab is missing (implied by "only Overview is visible") identifies the user as an Organization User (or a restricted Custom Role) rather than an Administrator or Auditor.

Explanation:
VMware Cloud Foundation 9.0 requires strict vSAN ESA hardware compatibility when creating a workload domain that uses vSAN Express Storage Architecture (ESA). During host validation, SDDC Manager and vSphere Client check whether each ESXi host meets ESA requirements, including CPU generation, storage controller type, and―most importantly―ESA-certified NVMe storage devices.
The validation errors provided:
“Failed to validate vSAN HCL status” for every host
indicate that the hosts do not meet the vSAN ESA HCL requirements.
VCF 9.0 documentation states that ESA uses a next-generation log-structured filesystem requiring certified NVMe devices only, with no RAID controller dependencies. Unlike OSA, ESA eliminates disk groups, but it requires certified devices listed on the vSAN ESA HCL to pass host validation. If non-certified or unsupported NVMe/SAS devices are present, validation fails exactly as described.
Option A is incorrect because RAID pass-through settings apply to OSA, not ESA.
Option C is incorrect because ESA compatibility validation is performed offline using the SDDC Manager BOM, not via internet lookup.
Option D is incorrect because ESA does not use tri-mode RAID controllers.
Therefore, the documented and verified cause is B: hosts are not using vSAN ESA certified storage devices.