How Data TravelsReliable Networking

The Lost Packet

Missing pieces are requested again without restarting everything

Routers throw away packets all day long, without telling anyone. So why do your photos never arrive with holes in them?

You'll find out

  • Why the internet loses your data
  • How a sender spots a missing piece
  • When resending is the wrong move

Why it matters

Downloads, messages and payments all arrive complete over a network that promises nothing. This is the trick.

About 3 min6 interactive slides · 5 questionsLesson 74 · Zone 9

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