TinkerWen: nothing lost. Page in 1,060 ms.8,000 km · 14 trips to the shop · 1,060 ms
Chapter 4 of 7
Lost in the post
Wen in Farhaven lives 8,000 km from the shop, on a line that now and then loses a packet.
This chapter: What does one lost packet cost?
About this chapter
You will learn
- A lost packet is noticed only by a missing reply
- It waits a timeout, then goes again
- Why one loss can cost more than every round trip
Words you’ll meet
- Packet
- One small piece of data sent across the network on its own.
- Timeout
- How long a sender waits for a reply before deciding the packet was lost.
Step 1 of 5
Wen’s long line sometimes loses a . The sender waits a for a reply, then sends it again.
Predict what one loss costs.