Question: What is the unique identifier length for a Closed Access Group (CAG) within a Public Land Mobile Network (PLMN), as per telecom standards?
Option 1: Variable length up to 64 bits, depending on the PLMN configuration
Option 2: Fixed length of 32 bits
Option 3: Dynamic length between 16 to 128 bits, assigned by the 5G System (5GS) architecture
Option 4: Standard length of 256 bits for all CAGs globally
Explanation: In telecom networks, a Closed Access Group (CAG) requires a unique identifier for proper access control and management. A fixed length identifier simplifies network operations and reduces potential errors. Thus, a fixed length of 32 bits for the CAG-Identifier is specified, providing a balanced approach between uniqueness and operational efficiency within a Public Land Mobile Network (PLMN), aligning with the need for standardized, efficient identifiers in complex wireless communication systems.