Question: In the 3GPP Common API Framework (CAPIF), how are interactions between CAPIF functions, such as between the Common Control Function (CCF) and the Application Enablement Function (AEF), primarily represented in the functional architecture?
Option 1: Solely through a service-based representation, enabling authorized functions to access services directly.
Option 2: Exclusively via point-to-point reference points (e.g., CAPIF-3), illustrating direct interactions between two functions.
Option 3: Through both a service-based representation for service access and point-to-point reference points for specific function interactions.
Option 4: Neither service-based nor reference point representations are used; instead, a message queue system is employed.
Explanation: The correct answer reflects the dual approach in the CAPIF functional architecture for representing interactions between its functions. This includes both a service-based model for accessing services and a reference point model (like CAPIF-3) to show interactions between any two functions (e.g., CCF and AEF), providing flexibility and clarity.