Question: In a Service Enabler Architecture Layer for Verticals (SEAL) setup, what is the primary purpose of assigning a unique VAL UE ID to a User Equipment (UE), such as in V2X services?
Option 1: To facilitate billing and subscription management for the UE's mobile network operator.
Option 2: To enable end-to-end encryption for all communications involving the UE.
Option 3: To prioritize data packets from the UE in congested network conditions.
Option 4: To uniquely address the UE for sending VAL messages or accessing SEAL services.
Explanation: The correct answer highlights the core function of the VAL UE ID as a unique identifier to address the UE for service-specific communications (e.g., sending VAL messages) and to access specialized services provided by the SEAL layer, crucial for efficient and directed communication within vertical services like V2X.