Module EC-11
Data Communications and Computer Networks
How a message gets from one machine to another, layer by layer. Why the problem was split into layers at all, what a link does with bits and how it catches errors, how many machines share one medium, how addresses and routing carry a packet across networks that have never met, what reliability costs at the ends, and what changes when the last hop is radio.
6 topics ~66 h estimated learning time
Comes afterS5-1. Analog and Digital Communication
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- EC-11.1 Why Networks Are Built in Layers
Foundation · 10 h
- EC-11.2 The Link: Encoding, Framing and Catching Errors
Core · 12 h
- EC-11.3 Sharing One Medium, and Ethernet
Core · 10 h
- EC-11.4 Addresses and Routing
Core · 12 h
- EC-11.5 End to End: TCP, UDP and the Price of Reliability
Core · 12 h
- EC-11.6 Wireless Links, Measurement and First Security
Core · 10 h