Week 0: How the Internet Actually Works - Networking, DNS, Architecture & My DevOps Journey Begins

I recently joined the DevOps Micro Internship (DMI) – Cohort 3, a free, project-based program by Pravin Mishra at CloudAdvisory. Before we dive into the exciting parts - containers, CI/CD pipelines, Kubernetes, cloud platforms - the program correctly insists on mastering the foundational concepts first.

This post documents everything I worked through in Week 0, covering five core tasks and my honest reflections. If you are starting your DevOps journey, this post is for you too. Consider this a beginner-friendly technical reference, not just a journal entry.

Why Foundations Matter in DevOps

It is tempting to jump straight into Docker or AWS. I get it - the tools look cool, the job postings mention them everywhere, and YouTube tutorials make them seem approachable. But here is the uncomfortable truth: tools break, documentation changes, and architectures evolve. What does not change nearly as fast is the underlying fundamentals.