Question: What is the purpose of using Diameter Authentication and Authorization according to RFC 7155?
Option 1: To authenticate and authorize users for voice services.
Option 2: To authenticate and authorize users for packet-based services, including initial access and re-authorization procedures for IPv4 address allocation.
Option 3: To provide encryption for data transmission between the GGSN/P-GW and the Diameter server.
Option 4: To manage Quality of Service (QoS) policies for packet-based services.
Explanation: Diameter Authentication and Authorization is used to authenticate and authorize users for packet-based services, including initial access and re-authorization procedures for IPv4 address allocation. This ensures that only authorized users can access the network and receive IP addresses, which is critical for secure and efficient communication in telecom networks.