Badge-earners have developed a good knowledge of the mechanisms & features used to provide, modify & delete PDN Connectivity Services in the 4G LTE Evolved Packet Core (EPC). This includes EPS Bearer provision, Quality of Service attributes, transport identities, & IP address allocation. They have covered standard & interworking scenarios (with 2G/3G). Both Traffic Flow Templates & Packet Filters have been studied, as well as the role of Policy & Charging - including the PCC & Billing functions.