Question: In a 5G Core Network (5GS), where is the Network Identifier (NID) AVP, consisting of 44 bits (11 hexadecimal digits), primarily utilized?
Option 1: In all types of Public Land Mobile Networks (PLMNs) for general subscriber identification.
Option 2: Exclusively in Non-Standalone (NSA) deployments for mobility management.
Option 3: Universally across all 5G network architectures for QoS control.
Option 4: Specifically when the serving network is a Single Network and Node (SNPN) for policy and charging control.
Explanation: The correct answer highlights the specific applicability of the NID AVP in 5GS environments, particularly when the serving network operates as an SNPN. This nuanced understanding is crucial for effective policy and charging control over specialized network configurations.