Question: What is the primary purpose of the Sd reference point in the Policy and Charging Control (PCC) architecture?
Option 1: To establish a direct communication link between the User Equipment (UE) and the Policy and Charging Rules Function (PCRF)
Option 2: To facilitate the exchange of subscriber data between different PCRF nodes
Option 3: To enable the provisioning of Application Detection and Control rules from the PCRF to the Traffic Detection Function (TDF) for traffic detection and enforcement
Option 4: To manage the Quality of Service (QoS) parameters for dedicated bearers in the Evolved Packet Core (EPC)
Explanation: The Sd reference point is specifically defined as the interface between the PCRF and the TDF, primarily used for provisioning Application Detection and Control rules to facilitate traffic detection and enforcement at the TDF, aligning with the PCC architecture's key functionality in managing network resources based on application-level awareness.