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World 5 · TCP: Did You Get That? · 14 min · PRO

Slow start and fairness

Not breaking the network

PRO · How the Internet Works

World 5: TCP: Did You Get That? is part of PRO

The first world of How the Internet Works is free. PRO opens the other 26 lessons in 6 worlds — simulations, quizzes and all.

  • Reliable delivery on an unreliable network
  • The three-way handshake
  • Lost packets
  • Radio waves in your room
  • Signal loss
PRO includes
  • All 60 labs — every world, every lesson
  • Practice exams and certificates

$8.33/mo, billed yearly ($99.99) · or $39.99 monthly

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