How it works
Each lesson is a short read with examples, then a few practice questions. Some ask you to type an answer (a number, an address, what a piece of code prints), some have you pick one, and some have you tap steps or lines into the right order. You can try again as often as you like; after two misses there’s a button to show the answer.
What do I need to know first?
How networks work first, and a little binary (the first lesson goes over it). The examples use Python's ipaddress module so you can check your answers, but you don't need to know Python.
The other networking courses
- How networks work: 7 lessons
- DNS, HTTP and other protocols: 7 lessons
- Routing and network security: 7 lessons
Where is my progress saved? In this browser, like the rest of the site. Nothing to sign up for.
“Python” is a registered trademark of the Python Software Foundation. This course isn’t made by or affiliated with it.