Question: Which of the following accurately describes the primary function of the St reference point in a telecom network?
Option 1: To facilitate direct communication between User Equipment (UE) and the Policy and Charging Rules Function (PCRF)
Option 2: To enable the PCRF to provide traffic steering control information to the Traffic Steering Support Function (TSSF)
Option 3: To manage the exchange of subscriber data between the Home Subscriber Server (HSS) and the Serving Gateway (SGW)
Option 4: To support handover decisions between different Radio Access Networks (RANs)
Explanation: The St reference point's role is to enable the Policy and Charging Rules Function (PCRF) to communicate traffic steering control information to the Traffic Steering Support Function (TSSF), crucial for efficient network resource allocation and traffic management. The other options describe unrelated functions, involving direct UE-PCRF communication, subscriber data exchange, or RAN handover decisions, not supported by the St interface.