Question: What type of data does the Transaction-Identifier AVP (AVP code 401) contain in the context of Generic Authentication Architecture (GAA)?
Option 1: Fully Qualified Domain Name (FQDN) of a Network Application Function (NAF)
Option 2: User Equipment's (UE) Security Protocol Identifier
Option 3: Bootstrapping Transaction Identifier (B-TID)
Option 4: IP Address of the Bootstrapping Server Function (BSF)
Explanation: The correct answer is Option 3 because, according to the specifications, the Transaction-Identifier AVP contains the Bootstrapping Transaction Identifier (B-TID), crucial for identifying and managing bootstrapping transactions in GAA, ensuring integrity and traceability of authentication processes.