1V0-21.20
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1V02120 DCV Associate (1V0-21.20)
The course teaches core concepts of VMware data center virtualization, covering ESXi, vCenter, VM management, storage, and networking, preparing candidates for the 1V0-21.20 certification exam.
135
Minutes
51
Questions
300/500
Passing Score
$250
Exam Cost
Who Should Take This
IT professionals, system administrators, and aspiring virtualization engineers who have basic networking or server experience benefit from this training. It equips them to validate foundational knowledge, accelerate career growth, and confidently support VMware vSphere environments and cloud integration tasks in entry‑level roles.
What's Covered
1
Domain 1: Virtualization Concepts
2
Domain 2: ESXi and vCenter Architecture
3
Domain 3: Virtual Machine Management
4
Domain 4: vSphere Storage
5
Domain 5: vSphere Networking
6
Domain 6: Resource Management and Availability
7
Domain 7: Security and Monitoring
What's Included in AccelaStudy® AI
Adaptive Knowledge Graph
Practice Questions
Lesson Modules
Console Simulator Labs
Exam Tips & Strategy
20 Activity Formats
Course Outline
67 learning goals
1
Domain 1: Virtualization Concepts
2 topics
Virtualization Fundamentals
- Identify the core characteristics of server virtualization including hardware abstraction, resource partitioning, workload isolation, and the difference between Type 1 and Type 2 hypervisors.
- Describe how VMware ESXi functions as a bare-metal Type 1 hypervisor that directly manages physical hardware and hosts multiple virtual machines.
- Explain the business benefits of server virtualization including consolidation ratios, improved utilization, reduced capital expense, faster provisioning, and workload portability.
- Differentiate between full virtualization, paravirtualization, and hardware-assisted virtualization and identify the techniques VMware ESXi employs.
- Analyze a scenario comparing physical deployment versus virtualized deployment and quantify benefits in utilization, cost, and recovery time.
VMware Product Portfolio
- Identify VMware Cloud Foundation components including vSphere, vSAN, NSX, and Aria Suite and describe each component's primary function in the SDDC stack.
- Describe VMware vSphere Foundation and VMware Cloud Foundation as bundled platforms and identify the additional components VCF provides over VVF.
- Explain the role of VMware Tanzu in enabling Kubernetes workloads on vSphere and its position in the application modernization strategy.
- Differentiate between Workspace ONE, Horizon, and Carbon Black Cloud and match each product to its primary end-user computing or security use case.
- Analyze a customer requirements scenario and recommend the appropriate VMware product bundle based on workload type, scale, and operational maturity.
2
Domain 2: ESXi and vCenter Architecture
2 topics
ESXi Host Architecture
- Identify ESXi architectural components including VMkernel, device drivers, management agents, DCUI, hostd, vpxd-agent, and the boot partition layout.
- Describe ESXi installation methods including interactive ISO, kickstart scripted install, and Auto Deploy for stateless host provisioning.
- Explain how ESXi manages CPU resources through shares, reservations, limits, NUMA-aware scheduling, and hyper-threading optimization.
- Explain how ESXi manages memory through transparent page sharing, ballooning (vmmemctl), compression cache, and host-level swap for overcommitment.
- Analyze a host performance scenario and determine whether CPU ready time, co-stop, memory balloon pressure, or storage latency is the primary bottleneck.
vCenter Server Architecture
- Identify vCenter Server as the centralized management platform and describe its key services: inventory, task scheduler, statistics, alarm manager, and event collector.
- Describe the vCenter Server Appliance (VCSA) deployment including embedded PSC, appliance sizing profiles, and high availability options.
- Explain vCenter SSO identity sources including Active Directory, LDAP, and identity federation and how they authenticate administrators.
- Describe vCenter inventory hierarchy: datacenters, clusters, hosts, resource pools, folders, and tags and explain how permissions propagate.
- Analyze the operational impact of vCenter unavailability on running VMs, HA restarts, DRS balancing, and administrative tasks.
3
Domain 3: Virtual Machine Management
2 topics
VM Creation and Configuration
- Identify VM hardware components including virtual CPUs, memory, VMDK disks, NVDIMM, virtual NICs, vTPM, and virtual hardware version compatibility matrix.
- Describe VM creation methods including new VM wizard, clone from existing, deploy from template, Content Library sync, and OVF/OVA import.
- Explain how VMware Tools provides optimized drivers, time synchronization, heartbeat monitoring, quiesced snapshots, and guest OS customization.
- Configure VM resource settings including CPU/memory reservations, limits, shares, disk provisioning types (thick eager-zeroed, thick lazy-zeroed, thin), and disk mode.
- Analyze a VM sizing scenario and recommend the appropriate virtual hardware, resource allocation, and compatibility settings for a stated workload.
VM Lifecycle Operations
- Identify VM power state operations (power on, off, suspend, reset, guest shutdown) and describe behavioral differences and guest OS impact.
- Describe snapshot mechanics including delta disks, memory snapshots, snapshot chains, consolidation, and the impact of long-running snapshot chains on performance.
- Explain vMotion live migration including CPU compatibility via EVC mode, shared storage requirement, network bandwidth, and the pre-copy memory iteration process.
- Explain Storage vMotion for migrating VM disks across datastores without downtime including changed block tracking and use cases for storage tier migration.
- Analyze a migration scenario and determine whether vMotion, Storage vMotion, cold migration, or cross-vCenter vMotion is the optimal technique.
4
Domain 4: vSphere Storage
2 topics
Datastores and Protocols
- Identify vSphere datastore types (VMFS 6, NFS v3/v4.1, vSAN, vVol) and underlying SAN/NAS protocols (FC, iSCSI, NFS, NVMe-oF).
- Describe Storage I/O Control (SIOC) and how it enforces per-VM IOPS shares and limits during datastore contention.
- Explain VMFS datastore management including creation, expansion via extents, growing on existing LUN, VMFS locking, and ATS heartbeat.
- Explain storage policies (SPBM) and how VM Storage Policies drive automated placement, compliance monitoring, and remediation.
- Analyze a storage performance scenario and recommend the optimal datastore type, multipathing policy (RR, Fixed, MRU), and SIOC settings.
vSAN Fundamentals
- Identify VMware vSAN as hyper-converged software-defined storage that pools local host disks into a distributed shared datastore.
- Describe vSAN storage policies including failures to tolerate (FTT), fault tolerance method (RAID-1 mirroring, RAID-5/6 erasure coding), and stripe width.
- Explain vSAN disk groups (cache + capacity tiers), vSAN ESA (Express Storage Architecture), and data object distribution across fault domains.
- Explain vSAN health checks, capacity monitoring, proactive rebalance, and how vSAN handles host failure and data rebuild.
- Analyze a vSAN sizing scenario to determine minimum host count, disk configuration, storage policy, and fault domain layout for stated availability requirements.
5
Domain 5: vSphere Networking
2 topics
Virtual Switch Architecture
- Identify vSphere Standard Switch (vSS) and Distributed Switch (vDS) and describe management scope, feature, and portability differences.
- Describe virtual switch components including port groups, uplinks, VMkernel adapters, VLAN tagging modes (VST, EST, VGT), and traffic shaping.
- Explain NIC teaming and failover policies including active/standby, load-based teaming, IP hash, route based on originating port, and link status detection.
- Configure port group security policies (promiscuous mode, MAC address changes, forged transmits) and explain the security implications of each setting.
- Analyze a virtual networking scenario and identify misconfigured VLAN, teaming, or security settings causing VM connectivity failure or broadcast storms.
VMkernel and Network Services
- Identify VMkernel adapter traffic types: management, vMotion, vSAN, Fault Tolerance, NFS, provisioning, and vSphere Replication.
- Describe Network I/O Control (NIOC) on distributed switches for allocating bandwidth shares and reservations among traffic types.
- Explain how to configure dedicated TCP/IP stacks and static routes for vMotion and provisioning traffic isolation.
- Explain how NSX integrates with vSphere to provide overlay networking, distributed routing, and micro-segmentation beyond native vSwitch capabilities.
- Analyze a multi-host networking design and recommend virtual switch type, VMkernel placement, NIOC shares, and traffic isolation strategy.
6
Domain 6: Resource Management and Availability
2 topics
DRS and Resource Pools
- Identify DRS functions including initial placement, load balancing, automation levels (manual, partially, fully automated), and predictive DRS.
- Describe resource pool hierarchy with shares, reservations, limits, and expandable reservation settings for nested resource pool trees.
- Explain DRS affinity and anti-affinity rules (VM-VM, VM-Host) for controlling placement based on licensing, availability, or workload separation.
- Analyze a cluster resource scenario and recommend the optimal DRS automation level, resource pool structure, and affinity rule configuration.
High Availability and Fault Tolerance
- Identify vSphere HA components including master/agent architecture, heartbeat datastores, network heartbeats, and host monitoring.
- Describe HA admission control methods: percentage-based, slot policy, dedicated failover hosts, and how each reserves capacity for host failures.
- Explain VM Component Protection (VMCP) for All Paths Down (APD) and Permanent Device Loss (PDL) storage failure response automation.
- Explain vSphere Fault Tolerance (FT) for zero-downtime VM protection using synchronized secondary VMs on separate hosts with vLockstep.
- Analyze an availability requirements scenario and determine the appropriate HA, FT, admission control, VM restart priority, and VMCP settings.
7
Domain 7: Security and Monitoring
2 topics
vSphere Security
- Identify vSphere security features: role-based access control, ESXi lockdown mode (normal, strict), VM encryption, vTPM, and Secure Boot.
- Describe how roles, permissions, and privileges are assigned at inventory object levels and how inheritance propagates through the object hierarchy.
- Explain VMware Certificate Authority (VMCA) certificate management for vCenter, ESXi, and solution users securing all management communication.
- Analyze a security compliance scenario and determine the appropriate RBAC configuration, lockdown mode, encryption, and certificate settings.
Performance Monitoring
- Identify vSphere monitoring tools including performance charts, alarms, events, tasks view, and ESXi shell/DCUI log files.
- Describe how vCenter alarms use symptom definitions with metric thresholds to trigger email notifications and automated actions.
- Explain how to read vSphere performance charts for CPU (%Ready, %CoStop), memory (consumed, active, balloon), disk (latency, IOPS), and network (usage, dropped packets).
- Analyze VM and host performance data to determine whether degradation is caused by host-level resource contention or guest-level misconfiguration.
Scope
Included Topics
- Virtualization concepts, VMware product portfolio, vSphere architecture, ESXi, vCenter, VM management, vSphere storage (VMFS/NFS/vSAN), networking (vSS/vDS), DRS, HA, FT, security hardening, and monitoring aligned to the VCTA-DCV exam guide.
- Key technologies: ESXi 8.x, vCenter Server Appliance, vMotion, Storage vMotion, Content Library, VMware Tools, vSAN, vSphere Distributed Switch, NSX overview, and Cloud Foundation overview.
Not Covered
- VCP/VCAP-level design and advanced automation.
- PowerCLI scripting and API programming.
- Current pricing and licensing costs.
- Third-party hardware vendor specifics.
Official Exam Page
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