VMware : 5V0-21.21 Questions & Answers

Last Updated: Nov 06, 2026

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VMware 5V0-21.21 Practice Q&A's

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The 5V0-21.21 exam doesn't reward recognition; it rewards recall under a ticking clock. That is why ActualTorrent builds its VMware HCI Master Specialist questions to be worked, not just read — and why 2026 candidates keep coming back to the test engines.

VMware 5V0-21.21 Exam Syllabus Topics:

SectionObjectives
HCI Architecture and Concepts- Hyper-Converged Infrastructure Fundamentals
  • 1. Compute Resources
  • 2. Storage Virtualization
  • 3. Networking Components
- vSAN Architecture
  • 1. Cluster Design
  • 2. Storage Policies
  • 3. Data Services
Management and Operations- Lifecycle Management
  • 1. Updates and Patching
  • 2. Health Checks
- Monitoring
  • 1. Performance Monitoring
  • 2. Capacity Management
Deployment and Configuration- HCI Mesh
  • 1. Resource Disaggregation
  • 2. Cross-Cluster Storage Sharing
- vSAN Deployment
  • 1. Cluster Creation
  • 2. Disk Group Configuration
  • 3. Network Configuration
Troubleshooting and Optimization- Performance Troubleshooting
  • 1. Network Bottlenecks
  • 2. Storage Performance Issues
- Availability and Recovery
  • 1. Data Protection
  • 2. Failure Scenarios

VMware 5V0-21.21 Exam: Your Questions, Answered

You're looking at 66-100 questions in 100 minutes. Do the math early, not in the exam room: decide your per-question pace, practice skipping hard items without panic, and finish at least two full timed mock tests — the ActualTorrent engine grades them automatically in about a minute, so you get instant feedback on where your time goes.

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The vendor's blueprint for the VMware HCI Master Specialist has 4 domains, led by HCI Architecture and Concepts, Deployment and Configuration, Troubleshooting and Optimization. The weighting is a study plan in disguise — heavy domains deserve heavy hours. You'll find every domain and subtopic in the complete outline above.

Passing the 5V0-21.21 exam earns the VMware Certified Master Specialist certification — a Specialist-level credential — issued directly by VMware. It is proof of ability that travels well across employers and borders. The credential also links to VMware Certified Master Specialist - HCI, so it can be a first step rather than a final destination.

Yes — the free PDF demo shows the real question quality before any payment. And the value continues after purchase: 365 days of free updates come standard, with a 50% renewal discount if your update period ever expires.

Recommended experience with VMware vSphere, vSAN, and Hyper-Converged Infrastructure solutions. These rules do get revised, so before you book, double-check the current requirements on the official 5V0-21.21 exam page — what the vendor publishes is what counts.

VMware HCI Master Specialist Sample Questions:

Question #1

An administrator wants to check the performance metrics for the workloads and their virtual disks that are running on a vSAN cluster, but no statistical charts are displayed in the vSphere client.
Why is this behavior being seen?

  • A. vSAN performance service is turned off.
  • B. vSAN performance verbose mode is not enabled.
  • C. vSAN network diagnostic mode is not enabled.
  • D. vSAN proactive tests haven't been run yet.
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

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Question #2

An administrator is troubleshooting vSAN performance issues, and the performance diagnostics reports:
"There are errors seen in one or more physical NICs on one or more hosts." Which two problems must be resolved to fix this issue? (Choose two.)

  • A. There are incompatible firmware and driver versions.
  • B. A firewall is blocking ports.
  • C. A 25 Gb/s NIC needs to be installed.
  • D. The vSAN version needs to be upgraded to 7.0.
  • E. There is an incorrectly set MTU.
Reveal Solution  Discussion  0

Correct Answer: A,E  🗳️

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Question #3

During a maintenance action on a vSAN node, a vSAN administrator noticed that the default repair delay time is about to be reached.
Which two commands must be run to extend the time? (Choose two.)

  • A. /etc/init.d/vsanmgmtd restart
  • B. esxcli system settings advanced set -o /VSAN/ClomRepairDelay -i 80
  • C. /etc/init.d/clomd restart
  • D. /etc/init.d/vsanobserver restart
  • E. esxcli system settings advanced set -o /VSAN/ClomRepairDelay -i 50
Reveal Solution  Discussion  0

Correct Answer: B,C  🗳️

Question #4

An architect is tasked to design a VMware Horizon Solution with vSAN. The architect needs to use a solution to host the user's profile shares in a highly available manner, and it must be guest OS independent.
Which solution will match these requirements?

  • A. Cluster in a box
  • B. iSCSI on vSAN
  • C. NFS on vSAN
  • D. Cluster out of the box
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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Question #5

An administrator of "vsan-prod" cluster noticed the witness components of VMs are flagged as absent after a failed attempt to replace the vSAN Witness Host.
Which action should the administrator take to resolve this issue?

  • A. Placing the vSAN Witness Host in Maintenance Mode and adding to the vSAN cluster
  • B. Using the RVC command: vsan.resync_dashboard ~/computers/vsan-prod
  • C. Running the vSAN Skyline Health check to ensure there are vSAN Object Health errors and executing the Repair Object Immediately option
  • D. Upgrading the vSAN on-disk format
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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