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1V0-21.20 Exam Questions & Answers

Associate VMware Data Center Virtualization  •  VMware

103 Questions 90 min Updated Jul 2026 99% Pass Rate
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About 1V0-21.20 Exam

The 1V0-21.20 Associate VMware Data Center Virtualization certification exam is a foundational credential designed to validate your expertise in VMware vSphere environments and data center virtualization technologies. This exam covers essential topics including vSphere architecture, virtual machine management, storage configuration, networking fundamentals, and resource optimization. Candidates will demonstrate proficiency in deploying, configuring, and managing virtual infrastructure components that are critical to modern data center operations. The certification serves as an ideal starting point for IT professionals seeking to establish their VMware credentials and advance their careers in virtualization and cloud infrastructure.

This exam is ideal for IT professionals, systems administrators, support engineers, and junior virtualization specialists who want to validate their foundational knowledge of VMware technologies. To maximize your chances of success, utilizing updated exam dumps and comprehensive practice tests is essential for effective preparation. These resources help you identify knowledge gaps, familiarize yourself with the exam format and question types, and build confidence before test day. Practice tests simulate real exam conditions and allow you to assess your readiness, while detailed exam dumps provide in-depth coverage of all exam objectives, ensuring you're thoroughly prepared to earn your 1V0-21.20 certification and boost your professional credentials in data center virtualization.

Exam Topics & Objectives

Architecture and Technologies
VMware Products and Solutions
Planning ana Designing
Installing, Config uring, ana Setup
Performance-tuning, Optimization, Upgrades
Troubleshooting ana Repairing
Administrative and Operational Tasks

4-Week Study Plan for 1V0-21.20

Week 1: Foundation and Architecture

  • Study VMware vSphere 7.0 architecture components (ESXi, vCenter Server, virtual machines)
  • Learn CPU and memory management concepts in virtual environments
  • Review storage architecture: block storage, file storage, and vSAN basics
  • Understand networking fundamentals: vSwitches, vmnics, and port groups
  • Study VMware product portfolio and licensing models
  • Practice identifying architectural components from scenario questions

Week 2: Planning, Design, and Installation

  • Learn capacity planning methodologies and resource requirements
  • Study vSphere infrastructure design best practices
  • Review ESXi installation requirements and installation procedures
  • Understand vCenter Server deployment options and configuration
  • Study virtual machine creation and configuration standards
  • Practice designing solutions based on business requirements scenarios
  • Complete hands-on labs for ESXi and vCenter deployment

Week 3: Configuration, Performance-Tuning, and Optimization

  • Master resource pool configuration and management
  • Study vSphere DRS, HA, and FT cluster features
  • Learn performance tuning techniques for CPU, memory, and storage
  • Review upgrade procedures for ESXi hosts and vCenter Server
  • Study vSAN configuration and optimization
  • Practice identifying performance bottlenecks from metrics
  • Learn administrative tasks: user roles, permissions, and policies

Week 4: Troubleshooting and Exam Preparation

  • Study common troubleshooting scenarios and diagnostic tools
  • Learn vSphere logs and how to interpret error messages
  • Review ESXi and vCenter Server connectivity issues
  • Study virtual machine performance and operational problems
  • Practice administrative tasks: backup, snapshots, and templates
  • Take full-length practice exams and review weak areas
  • Review all seven exam domains with focus on real-world scenarios

Sample 1V0-21.20 Questions

Practice with real exam-style questions. Reveal answers to verify your knowledge.

Q1 MultipleChoice

A vSphere administrator has migrated a virtual machine between two ESXi hosts using vSphere vMotion and notices that the VM can no longer be pinged.

What caused this situation?

Q2 MultipleChoice

Which feature provides a mechanism for a virtual machine to revert to

a previous configuration state?

Q3 MultipleChoice

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

Q4 MultipleChoice

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

Q5 MultipleChoice

A VMware administrator monitoring a project has been advised to run

the compute health check using the vSphere 7 client to monitor the ESXi

hosts health.

How should the administrator approach this task?

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Frequently Asked Questions

The exam covers core virtualization concepts including vSphere architecture, virtual machines, networking, storage, resource management, and security. It also includes hands-on knowledge of vCenter Server, ESXi hosts, and basic troubleshooting of VMware environments.

The exam is 130 minutes long and contains approximately 65-70 multiple-choice and drag-and-drop questions. You need to complete all questions within the time limit to receive a score.

The passing score for the 1V0-21.20 exam is 300 out of 500 points, which typically translates to approximately 60% correct answers. VMware does not publicly disclose the exact percentage due to question weighting variations.

VMware recommends having foundational knowledge of data center concepts and ideally 6-12 months of hands-on experience with vSphere environments. However, there are no formal prerequisites, and the exam is designed as an entry-level certification for IT professionals new to VMware virtualization.

VMware offers official training courses, practice exams, study guides, and documentation through their learning platform. Additionally, hands-on lab experience with vSphere, community forums, and third-party study materials can help reinforce your understanding of the exam objectives.
Exam Details
  • Exam Code1V0-21.20
  • VendorVMware
  • Total Questions103
  • Duration90 min
  • LanguageEnglish
  • Last UpdatedJul 21, 2026
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