Networking
Understand the protocols and infrastructure that power the internet, from DNS to TCP/IP.
7 lessons in order
How the Internet Works
What actually happens when you type a URL and hit enter. The full journey from your browser to the server and back.
How DNS Works
A step by step breakdown of how DNS resolves domain names into IP addresses.
IP Addresses and Subnetting
How devices are addressed on the internet and how networks are divided into smaller subnets.
DNS Deep Dive
The phone book of the internet. How domain names get translated into IP addresses — and everything that can go wrong.
HTTP vs HTTPS
How web browsers and servers communicate — and why encrypting that communication matters.
TCP vs UDP
Two ways to send data across a network — one reliable and ordered, one fast and fire-and-forget.
The OSI Model
The seven layer framework that defines how data travels through a network. Essential context for understanding every networking concept.
Coming soon