I wrote down most of this during the 15 minute demo prior to the real test. Layer Description Protocol Device Special Application Network access, flow control and error recovery. Packet creation starts here. SMB, NCP Gateway Presentation Translates data, converts protocols, encrypts and manages data compression. The redirector operates here.
Session Provides synchronization between computers.
TCP, SPX, NWLink, NetBEUI Gateway Network Addressing, routing, manages net problems, packet switching and reassembling data. IP, IPX, NetBEUI, DLC, DecNET Router, Brouter Data Link Converts raw data into packets, manages physical layer communication. Physical Transmits data, defines cables, cards and physical aspects.