Question: What is the primary purpose of the Flow-Label AVP (AVP code 1057) in Policy and Charging Control (PCC) as per 3GPP standards?
Option 1: To identify a specific User Equipment (UE) in the network for billing purposes.
Option 2: To prioritize traffic for Quality of Service (QoS) management across all access types.
Option 3: To contain and convey the IPv6 flow label header field, facilitating packet filtering (e.g., TFT packet filters).
Option 4: To encrypt data packets transmitted over the radio interface for security enhancement.
Explanation: The correct answer is Option 3 because the Flow-Label AVP is specifically designed to hold the IPv6 flow label header field. This field is crucial for identifying and managing specific flows of traffic, which can be used in packet filtering mechanisms like Traffic Flow Templates (TFT) for efficient network resource allocation and traffic handling, aligning with the needs of various access types in a telecom network.