Question: In an IMS (IP Multimedia Subsystem) network transitioning to Service-Based Architecture (SBA), what is the primary purpose of the `Npcf` and `Nhss` service-based interfaces exhibited by the PCF and HSS, respectively?
Option 1: To manage media handling and data channel management exclusively.
Option 2: To provide a legacy interface for non-SBA compliant IMS nodes.
Option 3: To enhance security features for SBA-enabled IMS networks.
Option 4: To offer equivalent functionality to the Diameter Rx and Cx/Sh reference points.
Explanation: The correct answer highlights that `Npcf` (exhibited by PCF) and `Nhss` (exhibited by an SBI capable HSS) provide equivalent functionality to the Diameter Rx and Cx/Sh reference points, maintaining compatibility and facilitating a smooth transition from traditional architecture to Service-Based Architecture in IMS networks.