Question: What type of protection does TLS provide for the interface between the NEF and the AF?
Option 1: Integrity protection only
Option 2: Integrity protection, replay protection, and confidentiality protection
Option 3: Replay protection and confidentiality protection only
Option 4: Confidentiality protection only
Explanation: TLS provides a comprehensive set of protections for the NEF-AF interface, including integrity protection to prevent tampering, replay protection to prevent unauthorized reuse of data, and confidentiality protection to keep data private. This ensures that communications between the NEF and AF remain secure and trustworthy.