Question: What is the primary purpose of the Sharing-Key-UL AVP in Policy and Charging Control over Rx reference point?
Option 1: To prioritize resource allocation for media components in the downlink direction.
Option 2: To identify which media components can share resources in the uplink direction, particularly across AF sessions for the same user.
Option 3: To manage Quality of Service (QoS) parameters for individual media components within a single AF session.
Option 4: To authenticate User Equipment (UE) before resource allocation.
Explanation: The Sharing-Key-UL AVP's role is to identify media components that can share uplink resources, especially across different Application Function (AF) sessions for the same user, which is crucial for efficient resource management and policy enforcement in telecom networks.