Question: What is the primary purpose of the Correlation Number in the context of Lawful Interception (LI) for I-WLAN tunnels?
Option 1: To authenticate User Equipment (UE) across different networks.
Option 2: To encrypt data transmission within the I-WLAN tunnel.
Option 3: To correlate Charging Data Records (CDRs) with Intercept Related Information (IRI) across PDG and AAA servers.
Option 4: To manage Quality of Service (QoS) for prioritized communications.
Explanation: The Correlation Number is crucial for linking specific data records (e.g., Charging Data Records with Intercept Related Information) within the same I-WLAN tunnel, facilitating comprehensive lawful interception across different network elements like PDG (Packet Data Gateway) and AAA (Authentication, Authorization, and Accounting) servers. This ensures that all related intercept data can be accurately associated and analyzed.