Question: In a Public Land Mobile Network (PLMN), what does the "Data Compression" attribute primarily indicate regarding communication between a Mobile Terminal (MT) and an Inter-Working Function (IWF)?
Option 1: The type of data transmission protocol preferred by the MT.
Option 2: Whether use of a data compression function is desired and accepted between the MT and IWF.
Option 3: The maximum data throughput expected for the connection.
Option 4: The security encryption level required for the data exchange.
Explanation: This question assesses understanding of service attributes in telecom networks. The correct answer, "Whether use of a data compression function is desired and accepted between the MT and IWF," reflects the attribute’s role in managing data efficiency between the mobile terminal and the inter-working function, highlighting its impact on optimizing network resource utilization and user experience.