Question: What are the two constituent parts of a ProSe (Proximity-based Services) Application Code in a telecommunications network?
Option 1: Mobile Country Code (MCC), Mobile Network Code (MNC), and a Permanent User Identifier
Option 2: PLMN ID (comprising MCC & MNC) of the ProSe Function, and a temporary identity corresponding to the ProSe Application ID Name
Option 3: IP Address of the ProSe Server, and a Dynamic Port Number for Service Allocation
Option 4: IMSI (International Mobile Subscriber Identity), and a Temporary Location Area Update
Explanation: The correct answer, Option 2, accurately reflects the composition of a ProSe Application Code: the first part being the PLMN ID (which includes both the Mobile Country Code (MCC) and the Mobile Network Code (MNC)) of the assigning ProSe Function, and the second part being a temporary identity that corresponds to the ProSe Application ID Name. This structure is crucial for identifying and managing proximity-based services within a telecom network.