The training workload models a smaller LAN with several hubs and busses.
The model is accurate in the sense that the CSMA/CD protocol of Ethernet and the Ethernet frame are faithfully modelled. The host model contains a traffic generator which implements a generic request-response based protocol. (Higher layer protocols are not modelled in detail.) With appropriate configuration, the traffic generator can be tuned become a rough model for protocols such as SMB/CIFS (the Windows file sharing protocol), HTTP, or a database client-server protocol.