Computer Networking › Section C · The transport layer › Topic C.1
Transport-layer services
The network layer can get a packet to the right computer, but a computer runs dozens of networked programs at once. The transport layer finishes the job: it turns delivery between hosts into communication between processes, and it decides how much reliability that communication gets.
In this topic
- From hosts to processes
- Segments and where they are built
- Two layers, two kinds of delivery
- IP's best-effort service
- What transport can and cannot add
- UDP: the minimum service
- TCP: a reliable byte stream
- Worked example: one stream, two protocols
- Worked example: choosing a transport
- Segment or datagram?
- Common mistakes to avoid
- Key takeaways
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