Question: Which Network Function (NF) is responsible for providing the Background Data Transfer (BDT) Policy Control Service in a 5G System?
Option 1: Access and Mobility Management Function (AMF)
Option 2: Policy Control Function (PCF)
Option 3: Session Management Function (SMF)
Option 4: User Plane Function (UPF)
Explanation: The correct answer is the Policy Control Function (PCF) because, as per the defined telecom standards for 5G systems, the PCF is specifically tasked with handling policy decisions and enforcement, including those related to background data transfers. This aligns with the role of managing and updating policies based on consumer requests and network conditions, making it the appropriate NF for providing the BDT Policy Control Service.