Cloud Computing Unit 3 revision checklist
Use this page after you have watched the lesson or read the notes. Go through each list and say the answer out loud before you tick it; anything you can't explain is what to revisit.
The checklist follows the order of the Unit 3 lesson, so you can jump back to the matching part of the video or notes.
Published 8 Nov 2026 by Unique AppSites.
Editorial draft
Checklist
0 of 14 ticked
Your ticks are saved only in this browser.
| Model | Best for | Watch out for |
|---|---|---|
| Public | Websites, blogs, batch jobs and other commodity workloads | Less control over security and customization |
| Private | Sensitive data and strict control or compliance needs | High cost and limited scalability |
| Hybrid | Keeping critical data private while using public scale | Complexity and cross-environment compliance |
| Model | What you rent | Example |
|---|---|---|
| IaaS | Virtual machines, storage and networking | Amazon EC2, Amazon S3 |
| PaaS | A platform to build and run applications | Google App Engine, Microsoft Azure |
| SaaS | A finished application used over the internet | Gmail |
Self-test
01Which layer of the cloud architecture looks after power supply and cooling?Show answerHide
The datacenter layer.
02What role does a hybrid cloud often play when an organization moves to the cloud?Show answerHide
It acts as an intermediate step, an on-ramp from the existing IT environment into the cloud.
03Which service model is most likely to lock you into one provider?Show answerHide
PaaS, because your application is built on the provider's runtime and tools.
04What type of cloud storage is Apple iCloud?Show answerHide
Personal (mobile) cloud storage.
05Name two benefits of cloud storage for backups.Show answerHide
Data is kept across distributed resources, so it survives a local hardware failure, and it supports disaster recovery without buying extra hardware.
Go deeper
Check your current syllabus