Before I touched a single cloud console, DevOps Micro Internship Cohort 3 sent me back to the internet's plumbing — and it turned out I needed the refresher more than I expected.
Task one asked me to use ChatGPT as a learning assistant, prompting it to explain "What is a protocol in networking?" with a real-life example. The answer stuck with me in the simplest possible way: a protocol is just a set of rules devices agree on before they talk, the same way two people agree on a shared language before a conversation makes sense. That framing carried me through everything else that week.
The core exercise put me in the shoes of a friend launching an online bookstore called EpicReads, hosted on a server in Finland, and asked me to explain to him how someone on the other side of the world would actually reach his site. Walking through packet switching, IP addressing, TCP/IP, and HTTP/HTTPS forced me to stop treating "the internet" as a black box. A request doesn't travel as one block of data — it's broken into packets, routed independently, addressed to a specific IP, and reassembled at the other end, all wrapped in TCP/IP's reliability guarantees and delivered over HTTP or HTTPS.
From there, I mapped out two-tier and three-tier application architecture (frontend/database vs. frontend/backend/database), which made it obvious why EpicReads would eventually need a backend layer once it outgrew a simple storefront. Then came DNS: understanding that epicreads.com is really just a friendly alias for 52.172.142.222, resolved through an A record, was the moment the whole stack finally clicked together — domain name, DNS, IP, and server all pointing at the same thing from different angles.
The hardest part wasn't any single concept — it was holding TCP/IP, DNS, and architecture in my head at the same time as one connected flow instead of four separate facts. That's the habit I'm carrying into the rest of the internship: build the mental model first, then layer in the tools.
P.S. This post is a part of DevOps Micro Internship with Agentic AI Cohort-3 by Pravin Mishra. You can start your DevOps journey by joining the DMI waiting list: https://forms.gle/3hvrWJBDzsDeJoPs6
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You can follow my graded progress throughout the cohort.
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