Question: Which of the following functions is EXCLUSIVELY supported when the Sd reference point is used for traffic steering control only, between a PCRF (Policy and Charging Rules Function) and a TDF (Traffic Detection Function)?
Option 1: Establishment and Termination of Sd sessions
Option 2: Provision of ADC Rules for application's traffic detection and traffic steering control
Option 3: Reporting of accumulated usage of network resources on a per TDF session basis
Option 4: Request for ADC decision from the TDF to the PCRF
Explanation: According to specifications, when the Sd reference point is used solely for traffic steering control, its primary function is providing Application Detection and Control (ADC) Rules from PCRF to TDF, enabling application traffic detection and traffic steering control. ADC Rules define traffic handling for specific applications, aligning with traffic steering goals.