CompTIA 220-1201 cloud guide covering virtualization, cloud models, thin clients, and VDI decisions.
This is the smallest Core 1 domain, but it still matters because CompTIA wants entry-level technicians to understand what a virtual machine is, what a cloud service model means, and where thin clients or VDI fit in support conversations.
VDI: Virtual desktop infrastructure, where a desktop runs centrally and is presented remotely to the user.
Thin client: A lightweight endpoint that depends heavily on central or hosted compute resources instead of doing the full workload locally.
CompTIA currently weights this domain at 11% of Core 1.
| Lesson | Focus |
|---|---|
| 4.1 Virtualization & Labs | Understand Type 1 and Type 2 hypervisors, snapshots, vCPUs, memory, and simple lab use cases. |
| 4.2 Cloud Models & VDI | Sort IaaS, PaaS, SaaS, public/private cloud, thin clients, and remote desktop models clearly. |
| If the question is really about… | Start here |
|---|---|
| host versus guest, Type 1 versus Type 2, or why a local VM helps training and testing | 4.1 Virtualization & Labs |
| who manages more of the stack, what a hosted desktop is, or how a thin client differs from a normal PC | 4.2 Cloud Models & VDI |
| Close-looking ideas | What Core 1 usually wants you to separate |
|---|---|
| hosted app vs hosted desktop | one application delivered remotely is different from a full remote desktop |
| Type 1 vs Type 2 | bare-metal virtualization is different from a hypervisor running on top of a normal OS |
| snapshot vs backup | temporary rollback aid is different from real recovery protection |
| thin client vs cloud service model | endpoint type is different from SaaS, PaaS, or IaaS |
Use these tie-breakers:
If this domain still feels fuzzy late in prep, protect these distinctions first:
Type 1 versus Type 2SaaS versus PaaS versus IaaSthin client versus VDIsnapshot versus backupReview both lessons once the heavier hardware and troubleshooting blocks are stable.