System Design Ep 02 | How the Internet Works | DNS, TCP, HTTP Explained Simply

🌐 Episode 02 of the System Design Series — learnCSfundamental

In this video we answer one simple question:
What happens in the 200ms between pressing Enter and a page appearing?

The answer covers DNS, TCP/IP, HTTP and HTTPS — explained simply for developers who never studied networking.

📌 What you'll learn:
✅ What an IP address actually is and why it matters
✅ DNS — how google.com gets converted to a number your computer understands
✅ TCP — how data travels reliably across the internet
✅ The 3-way handshake — explained as a simple phone call
✅ HTTP vs HTTPS — the postcard vs locked box difference
✅ How all of this connects to real system design decisions

🎯 This series is for software engineers who want to go from writing code
to designing systems — explained in Hinglish.

📚 Resources mentioned:
→ 'What happens when you type google.com' — github.com/alex/what-happens-when
→ MDN Web Docs — HTTP section (developer.mozilla.org)
→ Wireshark — inspect real network packets on your machine (free)

📌 Watch Episode 01 first: https://www.youtube.com/watch?v=j6j67vyJUxE

🔔 New episode every week — subscribe so you never miss one!

#systemdesign #howinternetworks #dns #tcpip #http #https #learnCSfundamental #hinglish #softwareengineering

Видео System Design Ep 02 | How the Internet Works | DNS, TCP, HTTP Explained Simply канала Learn CS Fundamentals