1V0-21.20 Vsphere Practice Questions
The free 1V0-21.20: Associate VMware Data Center Virtualization questions that deal with vsphere, with answers and explanations. The full bank and the timed practice test cover every topic the exam asks about.
Question #2
Refer to the exhibit: Which piece of information should a vSphere operator conclude about iSCSI-01?

Correct answer: C
Question #3
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?
Correct answer: C
Explanation
Cloning produces an independent exact copy of the virtual machine, including its configuration and virtual disks, which is the safeguard needed before changing the configuration; a snapshot stays dependent on the original VM.
Question #4
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?
Correct answer: A
Explanation
If a host is still running but has lost network connectivity, it cannot communicate with the master and its VMs cannot be failed over, while the guest operating systems keep running and report no power failure.
Question #5
Which vSphere component centralizes automated patch and version management for clusters. ESXi. drivers and firmware. Virtual Hardware, and VMware Tools?
Correct answer: D
Explanation
vSphere Lifecycle Manager manages the desired state of a cluster from a single image, covering ESXi version, drivers, firmware, virtual hardware and VMware Tools.
Question #9
An administrator is concerned that a VM has high ballooning activity and needs to check the default display of the Advanced Performance pane in the vSphere Client to confirm this activity. Which view should the administrator choose in the default display?
Correct answer: C
Explanation
Ballooning is a memory reclamation technique, so the Memory view of the Advanced Performance pane displays balloon and swapped memory counters for the VM. The Network, Power and Virtual disk views do not report ballooning.
Question #10
Which feature must be enabled to use vSphere Fault Tolerance?
Correct answer: C
Explanation
Fault Tolerance requires the host to be in a vSphere HA-enabled cluster, because HA provides the failover infrastructure FT uses to restart the secondary VM. DRS, Replication and vSAN are not prerequisites.
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