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About this course
This course takes the internet apart into pieces you can actually reason about: how a domain name becomes an IP address, how packets find their way, why TCP is slower but safer than UDP, and what the padlock in your browser really guarantees. You'll work through multiple-choice questions on DNS, IP addressing, routing, ports, HTTP and HTTPS, TLS, Wi-Fi, and common failure points. It's for students, support and IT staff, developers filling in the gaps, and anyone curious about what's happening under the browser.
Why understand networks
Almost every mysterious bug — a page that won't load, a certificate warning, an API that works locally but not in production — is a networking story once you can read it. Answering questions forces you to trace the path a request actually takes, and the explanation fills in the step you were quietly skipping.
How this course works
- Short MCQ sessions you can finish in a coffee break
- Every answer comes with an explanation of why it's right and why the alternatives fail
- Scenario questions that hand you a broken connection and ask what to check
- Difficulty ramps from vocabulary to real troubleshooting reasoning
What you'll walk away with
A clear mental picture of a request from browser to server and back, the vocabulary to follow a technical conversation without nodding along, and a sensible order for diagnosing something that won't connect.