Question: In a 5G System, which entities exchange messages for Network Slice performance and analytics charging?
Option 1: NWDAF (Network Data Analytics Function) and MnS (Measurement Service)
Option 2: CEF (Charging Enablement Function) and CHF (Charging Handler Function)
Option 3: UE (User Equipment) and gNB (Next Generation Node Base)
Option 4: AMF (Access and Mobility Management Function) and SMF (Session Management Function)
Explanation: The correct answer is Option 2 because Charging Data Request/Response messages for performance and analytics charging functionality are exchanged between the CEF and the CHF, facilitating charging management based on network slice performance and analytics in a 5GS.