Question: In a Generic Bootstrapping Architecture (GBA) with NAF Derivation, what action does the Terminal take immediately after reading EFGBABP for ISIM Service n°2 "available"?
Option 1: Send Response to Network without Authentication
Option 2: Initiate GBA in Native Application Mode
Option 3: Read Additional Files from ISIM before Proceeding
Option 4: Use AUTHENTICATE Command in GBA Security Context (NAF Derivation Mode)
Explanation: In the context of Generic Bootstrapping Architecture with NAF (Network Application Function) Derivation for an available ISIM Service n°2, security is paramount. After reading EFGBABP (a file likely containing bootstrapping parameters), the Terminal must authenticate to ensure secure communication. The correct next step involves using the AUTHENTICATE command specifically within the GBA’s security context and NAF Derivation Mode, ensuring a secure handshake before further interactions. This highlights the importance of authentication in telecom networks for maintaining integrity and confidentiality.