SAC Blocks & SYNC-ACK: TCP Handshake

Part 1 ~ TCP vs UDP — How Data Actually Travels Across the Internet What are TCP and UDP — and why does the internet need both? In this video, you’ll learn how data actually travels across the internet in a clear and simple way. Every time you load a webpage, download a file, or join a video call, your data is split into packets and sent across networks — but what ensures it arrives correctly, or quickly? We’ll build your understanding step by step: ◼️ First, you’ll understand why reliable commu