A+ Fundamentals: Mainframes To Cloud | IT Skills Development Chapter 8

Technology Tap: CompTIA Study Guide

[email protected]

Detailed technology education and IT skills development guide covering mainframes to cloud computing for CompTIA prep.

One idea rewired computing: what if one machine could convincingly pretend to be many? We start with mainframes and time sharing, then move through hypervisors, virtual machines, and the moment virtualization became the backbone of the cloud. From there, the story accelerates into public, private, hybrid, and community cloud models, and the service stack that defines modern IT—Infrastructure as a Service, Platform as a Service, and Software as a Service—so you know exactly who manages what and why it matters.
We break down how to build reliable VMs, choose the right network mode, and use snapshots, templates, and live migration to save time and prevent outages. Then we climb the stack to cloud storage options like object, block, and file; explore VDI with thin and zero clients for secure, centralized desktops; and map the virtual network layer with routers, firewalls, load balancers, and VPN gateways. Security threads through everything: shared responsibility, IAM, MFA, encryption, and redundancy. You’ll learn practical troubleshooting for slow VMs, networking quirks, sync failures, and common cloud gotchas like quota limits and VPN interference.
Containers and Kubernetes bring speed and resilience, turning monoliths into microservices that scale on demand. We close on the frontier—edge and fog computing reduce latency at the source, while serverless lets code run only when needed. By the end, you’ll see how virtualization delivered flexibility, the cloud delivered scale, containers delivered agility, and serverless delivered automation. Subscribe, share with a teammate, and leave a quick review to help more tech learners tap into the roots and future of cloud computing.

Support the show

Art By Sarah/Desmond
Music by Joakim Karud
Little chacha Productions
Juan Rodriguez can be reached at
TikTok @ProfessorJrod
[email protected]
@Prof_JRod
Instagram ProfessorJRod

Bab

1. A+ Fundamentals: Mainframes To Cloud | IT Skills Development Chapter 8 (00:00:00)

2. Welcome And Episode Setup (00:00:27)

3. Origins Of Virtualization (00:01:16)

4. Hypervisors Explained (00:02:30)

5. Building And Managing Virtual Machines (00:03:59)

6. Network Virtualization Modes (00:05:11)

7. Real-World Virtualization Scenarios (00:06:01)

8. Virtualization As Cloud’s Backbone (00:06:59)

9. What The Cloud Really Is (00:08:03)

10. Cloud Deployment Models (00:08:46)

11. Cloud Service Models (00:10:23)

12. Cloud Storage Options (00:11:45)

13. VDI And Thin Clients (00:13:08)

14. Cloud Networking And Security (00:14:15)

15. Edge, Fog, And Serverless (00:15:28)

16. Containers And Orchestration (00:16:31)

17. Cloud Backup Strategies (00:18:48)

18. Cloud Printing And Services (00:20:24)

19. Troubleshooting Virtual Machines (00:21:15)

20. Troubleshooting Cloud Issues (00:22:20)

21. Future Trends And Mindset (00:23:45)

22. A+ Practice Questions (00:25:26)

23. Closing And Contact Info (00:30:56)