This is a set of lectures which I created and gave at UCL. They give an introduction to the probability and mathematical techniques necessary to model communicating computer networks and particularly the internet.

Slides:

- Introduction (PDF)
- Probability and Markov chains (PDF)
- Queu(e)ing theory (PDF)
- Modelling examples and discussion (PDF)

The slides should be viewed with these complete lecture notes (PDF). You can also see the 2012 exam question and solution.

All corrections to these notes are welcomed.

There are older copies of this material available.