Question: What is the primary purpose of a ProSe Restricted Code in proximity-based services?
Option 1: To identify a specific UE device.
Option 2: To authenticate a user for network access.
Option 3: To correspond to one or more Restricted ProSe Application User ID(s).
Option 4: To encrypt data transmission between devices.
Explanation: The ProSe Restricted Code is used to map to one or more Restricted ProSe Application User ID(s), enabling the identification of specific applications or services in proximity-based scenarios. This code plays a crucial role in facilitating communication and service discovery among nearby devices, highlighting its importance in practical telecom scenarios involving proximity-based services.