Internet Protocols
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What Happens When You Play a Game Online? (It Throws Your Data Away)
For live traffic, late is worse than missing. UDP is built entirely around that idea.
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What Happens When You Hit Send? (Your Download Is Faking It)
The network loses things, duplicates them and delivers them out of order. TCP is what makes it look like a clean pipe.
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What Happens When You Hit Enter? (It’s Always DNS)
Your computer has no idea where a website is. DNS is the system that finds out, in the gap between your keystroke and the page.
Stick Figure Internet 