1V0-21.20 Practice Test Free – 50 Real Exam Questions to Boost Your Confidence

Preparing for the 1V0-21.20 exam? Start with our 1V0-21.20 Practice Test Free – a set of 50 high-quality, exam-style questions crafted to help you assess your knowledge and improve your chances of passing on the first try.

Taking a 1V0-21.20 practice test free is one of the smartest ways to:

• Get familiar with the real exam format and question types
• Evaluate your strengths and spot knowledge gaps
• Gain the confidence you need to succeed on exam day

Below, you will find 50 free 1V0-21.20 practice questions to help you prepare for the exam. These questions are designed to reflect the real exam structure and difficulty level. You can click on each Question to explore the details.

During a virtual machine migration, which VMkernel networking layer handles the traffic?

A. vSphere vMotion
B. vSAN
C. IP storage
D. Fault Tolerance
 

An administrator is trying to create an alarm action that runs a batch file on a specific VM.

Which alarm action should the administrator use?

A. Send SNMP traps
B. Run a PowerCLI command
C. Run script
D. Send email notifications
 

An administrator wants to ensure that a copy of a virtual machine can still power up on another data center during a disaster.

Which feature meets this requirement?

A. vSphere High Availability
B. vMotion
C. Fault Tolerance
D. vSphere Replication
 

Which configuration setting prevents a packet sniffing program from analyzing network packets on the virtual switch?

A. Forged Transmits set to Accept
B. Forged Transmits set to Reject
C. Promiscuous Mode set to Reject
D. Promiscuous Mode set to Accept
 

Which feature must be enabled to use vSphere Fault Tolerance?

A. vSphere HA
B. vSphere DRS
C. vSphere Replication
D. vSAN
 

A VSphere administrator sees the alarm:

vSphere HA virtual machine failed to failover

This occurred for virtual machines (VMs) in a cluster with vSphere High Availability (HA) enabled. The guest operating system on the VMs did not report a power failure.

What is a possible cause of this event?

A. The VMs cloning operations did not complete.
B. A reboot of vCenter Server impacted vSphere HA.
C. The host is still running but has disconnected from the network.
D. The VMs encountered an error during migration using vSphere vMotion.
 

A system administrator needs to configure a virtual machine to guarantee that it always gets the appropriate resources even if the host is overloaded and overcommitted.

Which setting on the virtual machine does the administrator need to configure?

A. vSphere High Availability Admission Control
B. High Performance Power Policy
C. CPU and Memory Shares to High
D. CPU and Memory Reservations
 

Refer to the exhibit:

 

After the "Service 1.5" snapshot is deleted, which snapshot will be the current state for the virtual machine?

A. Service 2
B. Service 1
C. Photon-01
D. Service 1.5
 

Which two vSphere features help address an organization's business availability challenges? (Choose two.)

A. vSphere Pod Service
B. vSphere Trust Authority
C. vSphere DPM
D. vSphere High Availability
E. vSphere Fault Tolerance
 

Which software-defined, object-based storage solution provides shared storage for vSphere clusters without using traditional external storage?

A. NFS
B. vVOLs
C. iSCSI
D. vSAN
 

An alarm is triggered in vSphere Client due to a failure of a host in a cluster. The host has not returned to normal state, but the administrator wants to clear the alarm.

Which sequence of steps should the administrator take to accomplish this goal?

A. Host > Monitor > Skyline Health
B. Host > Configure > Alarm Definitions > select an alarm > Delete alarm
C. Host > Monitor > Issues and Alarms > Triggered Alarms > select alarm > select Acknowledge
D. Host > Monitor > Issues and Alarms > Triggered Alarms > select alarm > select Reset to Green
 

An administrator is trying to configure EVC on a cluster that has both AMD and Intel hosts, but the configuration is failing.

What is causing this failure?

A. The administrator did not configure vMotion on all hosts prior to enabling EVC.
B. The administrator did not remove all passthrough devices prior to enabling EVC.
C. The administrator did not separate out the hosts by processor type prior to enabling EVC.
D. The administrator did not configure vSphere HA prior to enabling EVC.
 

A vSphere administrator needs to create an exact replica of a virtual machine as a safeguard prior to changing the virtual machine configuration.

Which vSphere feature accomplishes this requirement?

A. vSphere Fault Tolerance
B. Snapshots
C. vSphere vMotion
D. Cloning
 

Which two characteristics describe vSphere HA? (Choose two.)

A. When vCenter Server experiences downtime, vSphere HA restarts VMs on unaffected hosts.
B. vSphere HA restarts VMs if their host becomes isolated in the management network.
C. In response to datastore accessibility failures, vSphere HA restarts VMs on unaffected hosts.
D. vSphere HA performs load balancing across the hosts in a cluster to prevent resource contention.
E. By keeping a secondary VM running at all times, vSphere HA protects VMs from data loss.
 

A vSphere operator finds this error message:

Device or filesystem with identifier [naa.1234567890] has entered the All Paths Down state.

What should the operator conclude from this error message?

A. A host failed, and automated recovery of affected VMs is expected.
B. A storage device is inaccessible and is expected to become available.
C. A host is inaccessible, and migration of affected VMs is expected.
D. A storage device has failed and is not expected to become available.
 

An administrator is asked to copy a single hard disk from one datastore to another.

Which virtual machine file type should the administrator select?

A. vmss
B. vswp
C. vmdk
D. vmx
 

Which VMware feature would an administrator configure to migrate VMs using vSphere vMotion between ESXi hosts with different underlying CPU architectures?

A. vSphere Storage DRS
B. Enhanced vMotion Compatibility (EVC)
C. vSphere HA
D. VMware Fault Tolerance
 

Which piece of information does vSphere DRS consider when making decisions about which host to place a virtual machine?

A. Storage bandwidth on the host
B. Network usage by the virtual machine
C. Network bandwidth on the host
D. Disk usage by the virtual machine
 

Which configuration setting ensures that virtual networks on a virtual switch are isolated from each other?

A. VLAN ID
B. Port ID
C. Network Label
D. Security Policy
 

Which vSphere feature protects against host hardware failures by restarting virtual machines (VMs) on hosts that are running in the cluster?

A. vSphere vMotion
B. vSphere Fault Tolerance
C. vSphere DRS
D. vSphere HA
 

Which feature must an administrator use to revert back to the previous version of a VM template?

A. Content Library
B. VM Snapshots
C. Storage vMotion
D. VMware Tools
 

Which two guest operating systems are supported when a virtual machine must be deployed? (Choose two.)

A. T/TOS (Tandem Transactional OS)
B. Android
C. MacOS
D. Microsoft Windows
E. iOS
 

A company has a few virtual machines running software XYZ that only support the current CPU type. With hardware refresh, the company wants to leverage the new processor features for all VMs except for VMs running software XYZ.

Which feature meets this requirement?

A. Cluster-Level EVC
B. vSphere High Availability
C. Per-VM EVC
D. vSphere vMotion
 

Which DRS score indicates that the virtual machine (VM) is experiencing severe resource contention?

A. 95%
B. 70%
C. 15%
D. 50%
 

An administrator has observed an alert message in the vSphere UI related to a host's storage sensor hardware.

Where should the administrator look for more information related to this alert?

A. Host > Monitor > Hardware Health > System Event Log
B. Host > Monitor > Hardware Health > Storage Sensors
C. Menu > Lifecycle Manager > Baselines
D. Host > Monitor > Skyline Health
 

A vSphere administrator wants to monitor the CPU usage of all virtual machines (VMs) in a specific host cluster using alarms.

Which sequence of actions should the administrator use?

A. Click on the VMs folder and add an alarm.
B. Click on the cluster and add an alarm.
C. Click on the ESXi host and add an alarm.
D. Click on individual VMs and add an alarm.
 

An administrator needs to migrate a powered off virtual machine to another cluster with no shared storage.

Which option should the administrator select for a successful migration?

A. Change compute resource only
B. Change both compute resource and storage
C. Migrate virtual machine(s) to a specific datacenter
D. Change storage only
 

On a vSphere Standard Switch, which setting should an administrator configure to improve the networking efficiency by increasing the amount of payload data transmitted with a single packet?

A. VLAN
B. NIC Teaming
C. LACP
D. MTU (Bytes)
 

Which two storage protocols can a virtual infrastructure operator use to create a VMFS datastore? (Choose two.)

A. SMB
B. iSCSI
C. Fibre Channel
D. NFS
E. CIFS
 

An administrator is working on a cloud migration project. The project has a requirement to check the EVC mode for virtual machines (VMs) hosting an application.

How can the administrator find the EVC details for these VMs?

A. Right click VM > Migrate > Change storage only > Select Datastore > Next > Finish
B. Select Host > VMs > Show/Hide Column > EVC Mode
C. Right click VM > Migrate > Change compute resource only > Select Host > Next > Finish
D. Power off VM > Configure > VMware EVC
 

An administrator has applied a Service 2 patch after taking a snapshot. The administrator then realizes that a Service 1.5 patch should have been applied before the Service 2 patch.

Refer to the exhibit:

 

Which series of actions should be taken to manage this issue?

A. Remain at Service 2, take a snapshot, and apply Service 1.5 patch.
B. Delete Service 1, take a snapshot, and apply Service 1.5 patch.
C. Delete all the snapshots, take a snapshot, and apply Service 1.5 patch.
D. Revert to Service 1, take a snapshot, and apply Service 1.5 patch.
 

An administrator must configure vSphere HA to act upon virtual machines when a host is disconnected from the management network.

Which option should the administrator use?

A. Admission Control
B. VM Monitoring
C. Host Failure Response
D. Response for Host Isolation
 

A vSphere administrator is unable to remove an ESXi host from a vSphere Distributed Switch (VDS).

Which two reasons could have caused this issue? (Choose two.)

A. Virtual machine network adapters on the host are connected to the switch.
B. The ESXi host is connected to another VDS.
C. Virtual machine network adapters are faulty.
D. The VDS is configured with ingress traffic shaping.
E. The ESXi host has VMkernel adapters assigned to the switch.
 

Which problem is solved by migrating virtual machines (VMs) using vSphere vMotion?

A. The names of the VM files that do not match the inventory name of the VM.
B. A vSphere cluster that needs to be upgraded without any VM downtime.
C. A problem that occurred during VM patching and a roll-back is needed.
D. Heavy storage traffic and latency that are concentrated in a few datastores.
 

An administrator is migrating 100 virtual machines from one ESXi Host to another. The current 1GigE network cards are only migrating four virtual machines simultaneously.

Which action should the administrator take to increase that number to eight?

A. Add more memory to the ESXi hosts
B. Configure port mirroring
C. Add a 10GigE network card to each ESXi host
D. Configure Load Balancing
 

What is the purpose of the VMware Tools balloon driver?

A. To provide a high-resolution display for the VM's console
B. To improve a VM's network performance
C. To provide fast and efficient communication between VMs
D. To improve a VM's memory management capabilities
 

A system administrator is preparing a host in a vSphere DRS cluster in partially automated mode for firmware patching and puts a host into maintenance mode.

After several minutes, the host still has not entered maintenance mode.

How should the system administrator resolve this problem?

A. The system administrator needs to schedule DRS to run again.
B. The system administrator needs to migrate virtual machines using vSphere vMotion.
C. vSphere Lifecycle Manager and DRS integration need to be configured.
D. vSphere HA admission control needs to be enabled on the cluster.
 

Which feature must be enabled to configure vSphere Proactive HA?

A. vSphere HA
B. Cluster EVC
C. vSphere DRS
D. Fault Tolerance
 

What is a benefit of VMware vSphere Storage APIs - Data Protection?

A. It allows backup of a virtual machine with a backup agent in the guest OS.
B. It facilitates decentralized, on-host, LAN-free backup of vSphere virtual machines.
C. It increases ESX host resources to do backup processing.
D. It enables centralized, off-host, LAN-free backup of vSphere virtual machines.
 

An administrator needs to separate traffic of virtual machine live migrations from all other traffic.

Which TCP/IP stack meets this requirement?

A. Provisioning TCP/IP stack
B. vMotion TCP/IP stack
C. Fault Tolerance logging TCP/IP stack
D. Management TCP/IP stack
 

Which vSphere component centralizes automated patch and version management for clusters, ESXi, drivers and firmware, Virtual Hardware, and VMware Tools?

A. vSphere Lifecycle Manager
B. vSphere DRS
C. Content Library
D. VMware Cloud Foundation
 

Which name identifies a VMkernel port in a virtual networking configuration?

A. vSwitch1
B. VM Network
C. vmnic1
D. vmk1
 

A system administrator opened a technical support trouble ticket and was asked to provide the suspended virtual machine's memory contents.

Which file from the virtual machine directory will the system administrator need to upload to technical support?

A. vm.vmdk
B. vm.log
C. vm.vmss
D. vm.vmx
 

Which two improvements to the management of a VM are gained when VMware Tools are used? (Choose two.)

A. Synchronizes time between the guest and the host
B. Adds VM alarms to the inventory
C. Performs a clone of the VM
D. Makes a graceful shutdown of the VM possible
E. Allows a snapshot before the guest OS is upgraded
 

Refer to the exhibit:

 

Which statement is true about the access privileges of User 1?

A. User 1 has administrator privileges to all objects in the Test and Dev folder.
B. User 1 has administrator privileges to all VMs in the Production folder.
C. User 1 has read-only privileges to all objects in the Production folder.
D. User 1 has read-only privileges to the Dev01 VM in the Test and Dev folder.
 

A vSphere administrator has multiple virtual machines running on a VMFS datastore.

Which setting prioritizes the disk access for the virtual machines?

A. Disk Shares
B. Disk Mode
C. Hard disk
D. Disk type
 

A vSphere cluster running a virtual machine with VMware HA and DRS enabled in fully automated mode is experiencing a catastrophic host failure.

Which action can the administrator expect DRS to take?

A. It will pro-actively move the virtual machine to a different cluster.
B. It will pro-actively move the virtual machine to a different host.
C. It will move the VM to a host in the same cluster with enough resources after the HA restart.
D. It will move the VM to a host in a different cluster with enough resources after the HA restart.
 

Which hypervisor is a type-1 hypervisor?

A. VMware Fusion
B. VMware Workstation
C. Oracle VM VirtualBox
D. VMware ESXi
 

Which object-based storage can be used to store virtual machines?

A. NFS
B. VMFS
C. RDM
D. vVols
 

Which vSphere feature provides continuous availability, allowing users to protect any virtual machine from a host failure with no loss of data or connectivity?

A. vSphere Fault Tolerance
B. vSphere vMotion
C. Enhanced vMotion Compatibility
D. vSphere HA