Introduction to 5V0-21.20: VMware HCI Master Specialist Exam

Candidates for this 5V0-21.20: VMware HCI Master Specialist Exam are seeking to prove core HTML5 client application development skills that will run on today's touch-enabled devices (PCs, tablets, and phones). Although HTML is usually considered as a web technology that is rendered in a browser to generate a UI, this exam targets using HTML5, CSS3, and JavaScript to develop client applications.

Before taking the 5V0-21.20 exam test, candidates should have a solid foundational knowledge of the topics outlined in the preparation guide, including CSS and JavaScript. It is suggested that exam aspirants be familiar with the concepts of the application life cycle, Debug and test an HTML5-based have some hands-on experience with the related technologies, either by taking relevant training courses or by working with tutorials and samples accessible on MSDN and in VMware Visual Studio.

Reference: https://www.vmware.com/education-services/certification/vmware-ms-hci-exam.html

Topics of 5V0-21.20: VMware HCI Master Specialist Exam

Candidates must know the exam topics before they start preparation. Because it will help them in hitting the core. Our 5V0-21.20 exam dumps will include the following topics:

Section 1 - Architecture and Technologies Section 2 - VMware Products and Solutions

• Objective 2 1 - Configure vSphere replication (effects of storage policies)
• Objective 2.2 - Deploy vRealize Operations with vSAN

Section 3 - Planning and Designing

• Objective 3 3 - Use vSAN design and sizing tools (sizing cache tier for workload; no of nodes, VM sizing, Live Optics, HCI Bench, etc.
• Objective 3.1- Define and demonstrate vSAN design considerations (policies; fault domains; disc groups; kernel traffic; VCG; networking etc.)
• Objective 3 2 - Design a vSAN cluster (availability, capacity tier; failure to tolerate; etc.)

Section 4 - Installing, Configuring, and Setup

• Objective 4 1 - Configure and validate a vSAN configuration (networking vSAN Health; Cluster QuickStart, fault domains)
• Objective 4.5 - Configure Cloud-Native storage (CNS) with appropriate policies (Ensure container volumes are mapped to correct policies, datastore and are compliant)
• Objective 4.4 - Configure vSAN stretched cluster and 2-node configurations
• Objective 4.3 - Configure and validate vSAN services (iSCSI Target service, vSAN Encryption; vSAN fault domains; Health Service; dedupe/compression, etc.)
• Objective 4.2 - Create and manage disk groups

Section 5 - Performance-tuning, Optimization, Upgrades

• Objective 5.7 - Manage firmware and driver versions using vSAN Health, VUM, and Compatibility Guide
• Objective 5.5 - Evaluate the use case and apply the appropriate maintenance mode option.
• Objective 5.4 - Add and remove hosts from a cluster (capacity: compute, storage, etc.)
• Objective 5.6 - Create, expand, reconfigure, and remove disk groups
• Objective 5.2 - Apply patches using vSphere Update Manager (VUM) Objective 5.3 - Upgrade an HCI environment using VUM (Air Gap environments)
• Objective 5.8 - Set VUM baseline preferences
• Objective 5.1 - Determine upgrade requirements

Section 6 - Troubleshooting and Repairing

• Objective 6.2 - Interpret vSAN Health warnings (disk rebalance; congestion; hardware compatibility; object states etc.)
• Objective 6.3 - Determine vSAN Health using the vSphere Host Client, ESXCLI
• Objective 6.8 - Resolve capacity issues using storage policies (Proper way to return to a healthy capacity How to free capacity when an out-of-capacity situation, Capacity behavior best practices vs version-specific)
• Objective 6.7 - Identify and remove unassociated objects to reclaim capacity
• Objective 6.9 - Resolve object compliance issues
• Objective 6.1- Identify failure scenarios (firmware and hardware compatibility; ESXi host failure; disk, hardware, network failures; vSAN failure recovery; DDH, etc.)
• Objective 6.4 - Evaluate performance information in the UI and using stop
• Objective 6.5 - Manage hardware replacement (device failure; disk replacement; replace a host} Objective 6.6 - Monitor resync impact

Section 7 - Administrative and Operational Tasks

• Objective 7.4 - Monitor storage Policy compliance
• Objective 7.7 - Identify cluster configuration inconsistency and remediate through health check (Initiate remediation workflow from Health check)
• Objective 7 2 - Evaluate vSAN performance metrics (IOPS, congestion, latency, throughput, vsantop, resync)
• Objective 7.3 - Describe the effects of maintenance mode options (UI and CLI, new features and functionality)
• Objective 7.6 - Identify the impact of policy changes (capacity, fault tolerance, IOPS limit)
• Objective 7.1 - Describe vSAN data placement changes (stretched clusters, fault domains)
• Objective 7.5 - Interpret Health Check (actioning alerts, resolving alerts, configuring on-line Health; evaluate vSAN object health.)

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