Question: In Traffic Steering Control Operations over St, what is the primary purpose of the PCRF providing the UE IP address and associated APN to the TSSF during provisioning?
Option 1: To enable the TSSF to authenticate the UE for security purposes.
Option 2: To allow the TSSF to determine the specific PDN when multiple APNs have overlapping IP addresses.
Option 3: To facilitate direct communication between the PCRF and the UE for policy updates.
Option 4: To enable the TSSF to prioritize traffic based on UE location.
Explanation: The correct answer is Option 2 because, as stated in the context, providing the APN by the PCRF to the TSSF is specifically noted for cases where the PCEF supports multiple APNs with overlapping IP addresses. This allows the TSSF to accurately determine the PDN (Public Data Network) for traffic steering, even when the same UE IP address could be allocated to different UEs accessing different PDNs via different APNs.