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Series
In this series, I explain Computer Networks from the basics—how the internet works, packet switching, IP, routing, OSI/TCP-IP, topologies, protocols, subnetting, security, and key interview topics. Simple notes for quick learning.
By the time I reached this part of CN, things finally started feeling “connectable”.Part 1 taught me what happens.Part 2 taught me how it happens. And Part 3 made me feel like,“Okay, now the whole internet makes sense.” Let’s wrap up the final concep...
After understanding the basics in Part 1, I started digging into the “how” behind everything —How do devices inside a network talk?How does a message find its correct destination?How does the internet stay organized when billions of devices exist? Pa...
When I first started learning Computer Networks, everything felt abstract — packets, protocols, OSI layers… I couldn’t imagine what was happening behind the scenes.So I started writing simple notes as if I was explaining it to my younger self. This i...
