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1V0-21.20 Practice Questions Free

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  • 1V0-21.20 Practice Questions Free – 50 Exam-Style Questions to Sharpen Your Skills
  • Free Access Full 1V0-21.20 Practice Questions Free

1V0-21.20 Practice Questions Free – 50 Exam-Style Questions to Sharpen Your Skills

Are you preparing for the 1V0-21.20 certification exam? Kickstart your success with our 1V0-21.20 Practice Questions Free – a carefully selected set of 50 real exam-style questions to help you test your knowledge and identify areas for improvement.

Practicing with 1V0-21.20 practice questions free gives you a powerful edge by allowing you to:

  • Understand the exam structure and question formats
  • Discover your strong and weak areas
  • Build the confidence you need for test day success

Below, you will find 50 free 1V0-21.20 practice questions designed to match the real exam in both difficulty and topic coverage. They’re ideal for self-assessment or final review. You can click on each Question to explore the details.

Question 1

A system administrator has to configure several virtual machines for different business units. The administrator needs to enable features that allow overcommitment of resources while adhering to the business requirements and different department performance SLAs.
Which two features should the administrator enable to achieve this goal? (Choose two.)

A. vSphere Fault Tolerance

B. vSphere Resource Pools

C. vSphere High Availability

D. vSphere Storage I/O Control

E. vSphere Distributed Power Management

 


Suggested Answer: BD

Community Answer: BD

 

Question 2

Which feature must be enabled to configure vSphere Proactive HA?

A. vSphere HA

B. Cluster EVC

C. vSphere DRS

D. Fault Tolerance

 


Suggested Answer: C

Community Answer: C

Reference:
http://www.vmwarearena.com/vsphere-6-5-high-availability-new-features-proactive-ha/

Question 3

Which vSphere feature mitigates common optimization challenges?

A. vSphere Trust Authority

B. vSphere High Availability

C. vSphere DRS

D. vSphere Fault Tolerance

 


Suggested Answer: C

Community Answer: C

Reference:
https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/techpaper/vmware-drs-white-paper.pdf

Question 4

What is the purpose of an alarm?

A. It keeps records of system actions and the frequency at which they occur.

B. It notifies about events or conditions that occur with an object in vCenter Server.

C. It represents system activities that do not complete immediately, such as migrating a virtual machine.

D. It records user actions or system actions that occur on objects in vCenter Server or on a host.

 


Suggested Answer: B

Community Answer: B

Reference:
https://geek-university.com/vmware-esxi/alarms-in-vsphere/

Question 5

An operator needs to take a snapshot of a VM before an upgrade. The application team needs the ability to restore the VM with a consistent state of the guest file system while keeping the VM online.
How can the operator accomplish this task?

A. Right click VM > Migrate > Change Compute resource > Select Host > Finish

B. Right click VM > Power > Power Off > Actions > Compatibility > Upgrade VM Compatibility > OK

C. Power Off VM > right click VM > Snapshots > Take Snapshot > OK

D. Right click VM > Snapshots > Take Snapshot > Choose option to quiesce guest file system > OK

 


Suggested Answer: D

Community Answer: D

Reference:
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vm_admin.doc/GUID-64B866EF-7636-401C-A8FF-2B4584D9CA72.html

Question 6

An administrator needs to upgrade the guest operating system installed in a virtual machine.
The administrator wants to safely ensure that the selected operating system is supported by ESXi.
Which action should the administrator take to meet this goal?

A. Snapshot the VM before performing the operating system upgrade.

B. Perform a guest OS and product search in the VMware Compatibility Guide.

C. Check the web page of the guest operating system vendor.

D. Look in the guest OS version drop-down menu of the VM.

 


Suggested Answer: A

Community Answer: B

 

Question 7

Which cluster file system is used by ESXi hosts to store virtual machines?

A. SMB

B. VMFS

C. NFS

D. SCSI

 


Suggested Answer: B

Community Answer: B

Reference:
https://geek-university.com/vmware-esxi/virtual-machine-file-system-vmfs/#:~:text=VMFS%20(Virtual%20Machine%20File%20System,device%20at%

20the%20same%20time

Question 8

Which two configuration options can only be enabled on distributed switches? (Choose two.)

A. Port Mirroring

B. VLAN IDs

C. NetFlow

D. NIC Teaming

E. Load Balancing

 


Suggested Answer: DE

Community Answer: AC

Reference:
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.networking.doc/GUID-B15C6A13-797E-4BCB-B9D9-5CBC5A60C3A6.html

Question 9

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.

 


Suggested Answer: A

Community Answer: C

 

Question 10

Which vSphere DRS setting determines how aggressive vSphere DRS will be when recommending migrations to improve VM happiness?

A. Automation Level

B. Migration Threshold

C. Virtual Machine Automation

D. Predictive DRS

 


Suggested Answer: B

Community Answer: B

 

Question 11

Refer to the exhibit:
 Image
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

 


Suggested Answer: B

Community Answer: D

Reference:
https://kb.vmware.com/s/article/1023657#:~:text=Deleting%20a%20snapshot%20removes%20the,virtual%20machine%20or%20other%20snapshots

Question 12

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

 


Suggested Answer: D

 

Question 13

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

 


Suggested Answer: C

 

Question 14

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

 


Suggested Answer: A

Community Answer: B

Reference:
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vcenterhost.doc/GUID-EA3B742B-6675-4ECB-B386-7B9E95026AF8.html

Question 15

A developer is concerned about a virtual machine's CPU usage over the past month.
How can an administrator show the CPU usage over this time period to the developer?

A. Select the VM’s Summary tab, then view the VM Hardware pane.

B. Select the VM’s Summary tab, then view CPU Usage.

C. Select the VM’s Monitor tab, then select Overview.

D. Select the VM’s Monitor tab, then select Events.

 


Suggested Answer: B

Community Answer: C

Reference:
https://searchitchannel.techtarget.com/feature/Monitoring-vSphere-CPU-and-memory-usage

Question 16

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

 


Suggested Answer: D

Community Answer: D

 

Question 17

An administrator has been tasked with associating multiple uplink adapters with a single switch that will share the load of traffic.
Which networking feature should the administrator configure?

A. VLAN

B. Distributed Port Group

C. NIC Teaming

D. Host Proxy Switch

 


Suggested Answer: C

Community Answer: C

Reference:
https://docs.vmware.com/en/VMware-vSphere/7.0/vsphere-esxi-vcenter-server-70-networking-guide.pdf

Question 18

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

A. vSphere vMotion

B. vSAN

C. IP storage

D. Fault Tolerance

 


Suggested Answer: C

Community Answer: A

 

Question 19

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

 


Suggested Answer: BC

Community Answer: BC

 

Question 20

Which sequence of steps must a vSphere operator take to create an NFS datastore for a host, a cluster, or a data center?

A. From the Datastores tab, select NFS > New Datastore

B. Select an ESXi host, click the Configure tab > Storage Devices

C. From the Actions drop-down menu, select NFS > New Datastore

D. Right-click on an ESXi host, select Storage > New Datastore

 


Suggested Answer: C

Community Answer: D

Reference:
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.storage.doc/GUID-B52657D0-248D-4A99-99CC-D35B350461D5.html

Question 21

Which two block storage protocols are supported on vSphere? (Choose two.)

A. SAN

B. SMB

C. NFSv4.1

D. iSCSI

E. NFSv3

 


Suggested Answer: BD

Community Answer: AD

Reference:
https://searchservervirtualization.techtarget.com/answer/Which-storage-protocol-should-I-use-for-VMware-vSphere

Question 22

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

 


Suggested Answer: D

Community Answer: D

Reference:
https://kb.vmware.com/s/article/2034571

Question 23

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

 


Suggested Answer: D

Community Answer: C

 

Question 24

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

A. 95%

B. 70%

C. 15%

D. 50%

 


Suggested Answer: C

Community Answer: C

 

Question 25

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

 


Suggested Answer: A

Community Answer: A

Reference:
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vm_admin.doc/GUID-43C5C345-716F-41F4-AEEA-9C20B44852D3.html

Question 26

An administrator has been asked to keep domain controllers running on separate ESXi hosts.
Which type of VM/Host rule must be configured to meet this requirement?

A. Virtual Machines to Hosts

B. Virtual Machines to Virtual Machines

C. Keep Virtual Machines Together

D. Separate Virtual Machine

 


Suggested Answer: D

Community Answer: D

Reference:
https://dirteam.com/sander/2020/07/03/keeping-virtual-domain-controllers-apart-on-trusted-vmware-vsphere-hosts/

Question 27

A group of VMs is experiencing high latency on a portgroup in an ESXi host.
Which option can a vSphere administrator use to move some of the VMs to another portgroup?

A. Network Port Binding

B. vSphere vMotion

C. IP hash

D. Network I/O Control

 


Suggested Answer: B

Community Answer: B

 

Question 28

Which two physical resources are abstracted by the hypervisor and presented to virtual machines? (Choose two.)

A. Libraries

B. CPU

C. Application

D. Desktop

E. Memory

 


Suggested Answer: CD

Community Answer: BE

 

Question 29

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

 


Suggested Answer: A

Community Answer: D

Reference:
https://www.computerweekly.com/feature/Virtualisation-and-disaster-recovery-DR-features-in-VMware

Question 30

Which feature allows an administrator to implement master copies of virtual machines to create ready-for-use virtual machines?

A. Custom Attributes

B. Snapshots

C. Templates

D. Resource Pools

 


Suggested Answer: C

Community Answer: C

 

Question 31

Which virtual machine (VM) problem is solved using vSphere Storage vMotion?

A. The vSphere Client shows that a VM needs to be consolidated.

B. VMs are running on one ESXi host that presents high CPU resource contention.

C. The storage array on which a VM is running requires to enter maintenance mode.

D. The ESXi host on which a VM is running requires to enter maintenance mode.

 


Suggested Answer: D

Community Answer: C

 

Question 32

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.

 


Suggested Answer: C

Community Answer: C

 

Question 33

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.

 


Suggested Answer: B

Community Answer: B

 

Question 34

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.

 


Suggested Answer: AE

Community Answer: AE

Reference:
https://kb.vmware.com/s/article/2015435

Question 35

What is the default encrypted vSphere vMotion state for virtual machines that are not encrypted?

A. Opportunistic

B. Disabled

C. Required

D. Enabled

 


Suggested Answer: A

Community Answer: A

 

Question 36

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

 


Suggested Answer: C

Community Answer: B

 

Question 37

Which hardware is required to support Fibre Channel storage?

A. NIC

B. HBA

C. CNA

D. iSCSI adapter

 


Suggested Answer: B

Community Answer: B

 

Question 38

An administrator has noticed an increase in network latency when powered-off virtual machines are migrated.
Which VMkernel adapter can the administrator use to reduce this latency?

A. vSAN

B. vMotion

C. Provisioning

D. vSphere Replication

 


Suggested Answer: C

Community Answer: C

Reference:
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.troubleshooting.doc/GUID-6F893381-BD0B-4825-B4CD-414854A9D9D9.html

Question 39

Which feature helps maintain zero data loss when a VM on an ESXi server fails unexpectedly?

A. Fault Tolerance

B. vSphere High Availability

C. Storage vMotion

D. vMotion

 


Suggested Answer: B

Community Answer: A

 

Question 40

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.

 


Suggested Answer: AB

Community Answer: BC

 

Question 41

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)

 


Suggested Answer: D

Community Answer: D

 

Question 42

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

 


Suggested Answer: A

Community Answer: D

Reference:
https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.avail.doc/GUID-53F6938C-96E5-4F67-9A6E-479F5A894571.html

Question 43

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

 


Suggested Answer: CD

Community Answer: CD

Reference:
https://www.vmware.com/resources/compatibility/pdf/VMware_GOS_Compatibility_Guide.pdf

Question 44

What does it mean if a virtual machine (VM) has a high DRS score?

A. Its resource requirements are met most of the time.

B. It has poor performance in the current host.

C. It is in conflict over access to a shared resource.

D. It requires access to more resources as soon as possible.

 


Suggested Answer: A

Community Answer: A

Reference:
https://wuchikin.wordpress.com/2020/08/08/drs-in-vsphere-6-x-and-vsphere-7/

Question 45

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

A. NFS

B. VMFS

C. RDM

D. vVols

 


Suggested Answer: B

Community Answer: D

Reference:
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.storage.doc/GUID-5EE84941-366D-4D37-8B7B-767D08928888.html

Question 46

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

 


Suggested Answer: A

Community Answer: B

 

Question 47

A vSphere operator discovers a storage problem with the following PDL error message:
Permanently inaccessible device :naa.1234567890 has no more open connections.
What should the operator conclude from this error message?

A. A storage device is disconnected, but it can be reconnected by a host reboot.

B. A storage device has failed and is expected to become available.

C. A storage device has failed and is not expected to become available.

D. A storage device is disconnected, but it is treated as a transient issue.

 


Suggested Answer: C

Community Answer: C

Reference:
https://kb.vmware.com/s/article/2009306

Question 48

Which vSphere component provides continuous availability for mission-critical virtual machines so users experience no loss of data and no interruption in service during a host failure?

A. vSphere Fault Tolerance

B. vSphere vMotion

C. vSphere Replication

D. vSphere HA

 


Suggested Answer: A

Community Answer: A

Reference:
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.avail.doc/GUID-623812E6-D253-4FBC-B3E1-6FBFDF82ED21.html

Question 49

Which action should an administrator use to restore a virtual machine to a previous state?

A. Take snapshot

B. Revert to the latest snapshot

C. Delete all snapshots

D. Consolidate snapshot

 


Suggested Answer: B

Community Answer: B

Reference:
https://vdc-repo.vmware.com/vmwb-repository/dcr-public/8f96698a-0e7b-4d67-bb6c-d18a1d101540/ef536a47-27cd-481a-90ef-76b38e75353c/doc/

GUID-EFA0F8CF-4221-45A7-AD9E-350B1467E845.html

Question 50

An administrator wants to deploy virtual machines on Windows 10 desktop.
Which option accomplishes this goal?

A. Add an additional CD-ROM

B. Install Windows patches

C. Install a Type-2 hypervisor

D. Add additional network interface

 


Suggested Answer: C

Community Answer: C

Reference:
https://phoenixnap.com/kb/what-is-hypervisor-type-1-2

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