Free VMware 2V0-21.23 Practice Test Questions 2026

Explanation:

When the snapshot was taken with Snapshot the virtual machine’s memory = false, no memory state (RAM contents, CPU state) was captured. Without memory, vSphere cannot restore the VM to a running state because it has no record of what was actively in memory at snapshot time. Therefore, upon revert, the VM always powers off to ensure disk consistency.

The "Revert to Latest Snapshot" operation moves the VM back to the parent snapshot (the state just before the current snapshot was taken). In this scenario, the parent snapshot is the pre-upgrade application state. The child snapshot is the post-upgrade failed state, which is discarded during revert.

Why other options are incorrect:

A (powered on state) – Impossible because memory wasn't snapshotted. Reverting would leave no running process state to restore.

C (child snapshot, powered off) – Revert to latest snapshot goes to parent, not child. The child is the current state being abandoned.

D (child snapshot, powered on) – Combines two errors: wrong snapshot (child instead of parent) and wrong power state (on instead of off).

The Quiesce guest file system = false setting is irrelevant here—quiescing only pauses file system I/O for application‑consistent backups and does not affect power state after revert.

References

VMware vSphere 8.x Documentation– "Take a Snapshot of a Virtual Machine" "If you deselect Snapshot the virtual machine's memory, the snapshot does not capture the memory state. After reverting, the virtual machine will be in a powered off state."

Explanation:

The remote secure location has no network connectivity to the outside world, meaning the migration method must produce a portable image (e.g., to external storage) that can be physically transported. Additionally, the database has a high number of transactions—this is critical because hot cloning captures a system while it is running, and ongoing database writes during the clone can lead to an inconsistent or corrupt database state.

Cold cloning involves booting the source physical machine from a VMware Converter Boot CD (or ISO) that contains its own operating system and the Converter application. The source operating system is not running during the clone, so no changes occur on the disks during the process. This creates an exact, consistent replica of the guest OS, application, and database—ideal for transaction-heavy databases. The cloned virtual machine files can be written directly to external storage (USB drive, portable SSD) and then physically moved to the remote SDDC. Because the source OS is offline, cold cloning leaves no footprint on the original server.

Why option A (hot clone) is incorrect:
Hot cloning copies data while the OS is running and applications are active. For a database with high transaction volume, ongoing writes during the clone cause the resulting virtual machine to have a non‑consistent database state (some transactions partially captured). Additionally, hot clones do not produce an image that is easily transportable without network connectivity.

Why option C (restore from backup) is incorrect:
This assumes a recent, valid backup exists and that the backup software can restore directly to the remote SDDC format. The question does not specify that backups are available, and restoring requires network or media movement—but more importantly, the backup may not capture the exact pre‑migration state with all recent transactions.

Why option D (storage replication) is incorrect:
Storage replication requires network connectivity between source and destination to replicate data continuously. The remote location has no network connectivity to the outside world, making this impossible.

References:

VMware vCenter Converter User Manual – Hot and Cold Cloning Comparison:"Cold cloning, also called offline cloning, entails cloning the source machine when it is not running its operating system. This cloning method allows you to create the most consistent copy of the source machine because nothing changes on the source machine during conversion."

Explanation:

The administrator needs near real-time statistics for all VMs to diagnose intermittent short bursts of CPU contention. Both esxtop and resxtop provide live, refreshable (default 5-second interval) performance metrics directly from the ESXi host kernel.

C – resxtop – This is the remote version of esxtop. It runs from a remote machine (e.g., administrator's workstation or a vCenter-connected shell) and connects to an ESXi host over the network using authenticated API calls. It displays the same real-time CPU, memory, disk, and network statistics for all VMs on that host.

E – esxtop – This runs directly in the ESXi host's local console (DCUI shell or SSH session). It provides identical real-time statistics as resxtop but requires direct or SSH access to the host. Both tools show per-VM metrics like %RDY (CPU ready time), %USED, %CSTP (co‑stop), which are critical for diagnosing CPU contention bursts.

Why the other options are incorrect:

A – Advanced Performance Charts – These are historical, not near real-time. They aggregate data in intervals (e.g., 5 minutes to 1 day) and refresh every few minutes. They cannot capture sub‑minute intermittent bursts.

B – esxcli – This is a command-line management tool for configuration, troubleshooting, and basic stats gathering (e.g., esxcli vm process list). It does not provide continuous, refreshable real-time performance metrics across all VMs.

D – Overview Performance Charts – Similar to Advanced Charts, these are historical views with lower granularity (typically 20-second or 5-minute averages). They are not designed for near real‑time burst detection.

References:

VMware vSphere 8.x Documentation – "Using esxtop and resxtop for Real-Time Performance" "Both esxtop and resxtop provide real-time performance data for ESXi hosts. resxtop can be run remotely and connects to an ESXi host via vCenter Server or directly."

Ensure a DNS A Record Is created for the VMware ESXI host on the corporate DNS servers,

Update the VMware ESXI Management Network DNS configuration to use the corporate DNS servers for name, resolution,

Set the value of the VMware ESXI Management Network VLAN ID to 10.

Explanation:

The administrator installed ESXi but made no additional configuration changes. The error “Server Not Found” when using the FQDN (esxi101.corp.local) indicates a name resolution failure—the client cannot resolve the hostname to an IP address. Additionally, the physical network expects the management traffic to be on VLAN 10, but the ESXi Management Network defaults to VLAN 0 (untagged). These three tasks are required at a minimum:

A – Ensure a DNS A Record is created for the VMware ESXi host on the corporate DNS servers
Without an A record, the FQDN cannot resolve to 172.16.10.101. Even with correct client-side DNS settings, resolution fails if the DNS server lacks the record.

B – Update the ESXi Management Network DNS configuration to use the corporate DNS servers
ESXi needs to know which DNS servers to use for its own outbound name resolution (though this matters less for incoming connections, it is required for full FQDN functionality and for vCenter discovery later). More critically, the ESXi host must register its own name with DNS if dynamic DNS is used, and must be able to resolve other names.

E – Set the value of the ESXi Management Network VLAN ID to 10
The management network is on VLAN 10, but the default ESXi Management Network has no VLAN tag (VLAN ID 0). Without setting VLAN ID 10, the host's management traffic stays on the native VLAN and never reaches the correct subnet, making the IP address 172.16.10.101 unreachable from the rest of the network.

Why the other options are incorrect:

C – Update to use a static IPv4 address
– The installation already assigned 172.16.10.101/24 with gateway 172.16.10.1 (manually or via script). The problem is not DHCP vs. static; it's name resolution and VLAN misconfiguration. No change to IPv4 addressing is needed.

D – Configure at least two network adapters for the Management Network
– There is no requirement for NIC teaming or redundancy to achieve basic FQDN-based login. A single active management adapter is sufficient.

F – Disable IPv6 for the Management Network
– IPv6 being enabled does not prevent IPv4 FQDN resolution or access. Disabling it is unnecessary and unrelated to the error.

References

VMware vSphere 8.x Documentation – "Configure Management Network Settings" "To use FQDNs, you must configure DNS servers and ensure forward and reverse DNS records exist. For tagged management VLANs, you must set the VLAN ID on the Management Network."

VMware KB 1003926 – "Troubleshooting ESXi host management network connectivity" "Failure to set the correct VLAN ID on the Management Network results in no network connectivity to the host even with a correct IP address."

Explanation:

When three vSphere zones are mapped to three vSphere clusters in a vSphere with Tanzu deployment, the relationship between the Supervisor and vSphere Namespaces follows these rules:

B – One Supervisor will be created across all zones
– In a three-zone deployment, all three vSphere clusters become one Supervisor. The Supervisor spans across all three zones as a single logical control plane, providing cluster-level high availability. Each zone represents an independent failure domain (one per cluster).

D – Individual vSphere Namespaces will be placed into a specific zone
– When you create a vSphere Namespace in a multi-zone Supervisor, you select which zone(s) the namespace will use. A namespace can be configured with up to three zones, but the placement decision is explicit—you place it into a specific zone (or multiple zones) based on your workload requirements. Resources are drawn equally from each underlying cluster in the ratio you specify.

Why other options are incorrect:

A (One Supervisor in a specific zone)
– False. A three-zone deployment creates a single Supervisor across all three zones, not confined to one specific zone.

C (Three Supervisors in Linked Mode)
– False. The architecture creates exactly one Supervisor that spans multiple zones, not three separate Supervisors.

E (Namespaces spread across all zones automatically)
– False. While a namespace can be configured to span multiple zones for HA, the question specifies "individual vSphere Namespaces will be placed into a specific zone" as the true statement. Namespace placement is explicit and configurable, not automatic.

References

VMware TechDocs:
"Supervisor Zonal and Cluster Deployments" – "In a three-zone deployment, all three vSphere clusters become one Supervisor."

VMware TechDocs: "What is a vSphere Namespace?" – "You can map up to three vSphere Zones to a vSphere Namespace for running workloads on them. The vSphere Namespace spreads across all vSphere clusters that are part of the vSphere Zones."

Explanation:

When virtualization-based security (VBS) is enabled on a Windows virtual machine, several advanced vSphere features become unsupported due to the way VBS uses nested virtualization and modifies memory access patterns. According to VMware's official documentation, three features in the answer choices remain supported while others are not.

Supported Features with VBS Enabled:

A – vSphere vMotion
– VBS-enabled VMs can be live migrated between hosts using vMotion. The migration preserves the VBS memory isolation and the nested hypervisor configuration.

C – vSphere High Availability (HA)
– HA continues to function normally, restarting VBS-enabled VMs on surviving hosts in case of host failure. The VBS configuration is preserved during HA events.

E – vSphere Distributed Resource Scheduler (DRS)
– DRS can automatically balance VBS-enabled VMs across cluster hosts based on resource demand, including initial placement and ongoing load balancing. Note that "D" in the question was listed twice (Fault Tolerance appears twice with "D" for both), but vSphere Fault Tolerance is explicitly unsupported.

Why Other Options Are Incorrect:

B – PCI passthrough
– Not supported with VBS. Direct device assignment conflicts with VBS's memory isolation and nested virtualization requirements.

D – vSphere Fault Tolerance (FT)
– Not supported with VBS. The continuous replication and lockstep execution required by FT is incompatible with VBS's memory protection mechanisms.

F – Hot Add of CPU or memory
– Not supported with VBS. Adding CPU or memory while the VM is running would disrupt the secure memory regions VBS maintains. The VM must be powered off to add resources.

The question contains a duplicate "D" option, but vSphere Fault Tolerance is the unsupported feature.

References

Broadcom TechDocs – vSphere Virtualization-based Security Best Practices – Lists unsupported features: "Fault tolerance, PCI passthrough, Hot add of CPU or memory"

BDRSuite Blog – Implementing VBS in vSphere – Confirms "Unsupported VMware Features with Virtual Machines that have VBS enabled: Fault tolerance, PCI passthrough, Hot add of CPU or memory"

Explanation:

According to official VMware documentation, when VMware Tools has a known problem that requires immediate upgrading, the status reported in the vSphere Client is "Version Unsupported" .

The vSphere Lifecycle Manager status definitions state that "Version Unsupported" applies to three specific scenarios :
VMware Tools is installed, but the version is old
VMware Tools is installed, but the version has a known issue and must be immediately upgraded
VMware Tools is installed, but the version is too new to work correctly

Since the administrator performed the status check using vSphere Lifecycle Manager with VMware Tools already installed, the system correctly identifies the problematic version and reports it as "Version Unsupported" to alert the administrator of the urgent upgrade requirement.

Why Other Options Are Incorrect

B – Guest Managed – This status indicates that the guest operating system manages VMware Tools (e.g., open-vm-tools on Linux or OSP Tools). It does not indicate a known problem requiring upgrade .

C – Unknown – This status appears when vSphere cannot detect the VMware Tools state, typically due to missing "tools-light" VIBs on the ESXi host or file permission issues with GuestStore. It does not indicate a detected known problem .

D – Upgrade Available – This status appears when the installed version is simply older than the version available on the ESXi host, but the version is still supported. It indicates a routine upgrade is available, not an immediate mandatory upgrade due to a known issue .

References

Broadcom TechDocs – VMware Tools Status (vSphere 8.0): "Version Unsupported – VMware Tools is installed, but the version has a known issue and must be immediately upgraded"

Exam 2V0-21.23 Discussion – Verified answer from official VMware documentation confirming "Version Unsupported" for known problem scenarios

Proactive HA

Explanation:

Proactive HA is the vSphere cluster feature designed specifically to monitor host hardware health and automatically migrate virtual machines (VMs) when a host becomes degraded . Unlike traditional vSphere HA, which reacts after a host failure by restarting VMs on another host (causing downtime), Proactive HA takes action before a failure occurs by leveraging hardware health monitoring from OEM providers (such as Dell iDRAC or HPE iLO) .

Why other options are incorrect

A – Predictive DRS
– This feature uses historical data from vRealize Operations (Aria Operations) to predict future resource usage and proactively balance workloads for performance reasons. It does not monitor host hardware health status and does not respond to degradation events .

C – vSphere HA Orchestrated Restart
– This is a reactive feature that restarts VMs on another host only after a host has completely failed. It does not perform live migration and incurs downtime during the restart process .

D – vSphere Fault Tolerance
– This provides continuous availability by maintaining a live secondary copy of a VM with zero downtime, but it is designed for individual critical VMs and does not automatically migrate VMs based on host hardware degradation. It is resource-intensive and not a cluster-wide migration solution.

References

VMware TechDocs – Configure Proactive HA:"When a provider has notified vCenter of its health degradation indicating a partial failure of that host... Automated: Virtual machines are migrated to healthy hosts and degraded hosts are entered into quarantine or maintenance mode"