The exam will also cover Sections 3.1-3.8 on the Transport Layer. As always, you can expect an emphasis on the material I've chosen to discuss in class. In particular, make sure you understand the state diagrams in Section 3.4 showing the series of protocols implementing reliable transfer. I always enjoy asking questions about those diagrams! Those sections cover the general mechanisms employed by the Transport layer, as well as specifics of UDP and TCP.