Question: In a Policy and Charging Control (PCC) scenario, if an Application Function (AF) receives an AA-Request without the AF-Signalling-Protocol AVP, what protocol assumption is made regarding signaling between the User Equipment (UE) and the AF?
Option 1: Diameter
Option 2: HTTP/2
Option 3: Session Initiation Protocol (SIP)
Option 4: NO_INFORMATION (Assumption of no provided information about the AF signalling protocol)
Explanation: According to the specifications, if the AF-Signalling-Protocol AVP is not included in the AA-Request, the default assumption is that no information regarding the AF signaling protocol is being provided. This scenario does not automatically default to a specific protocol like SIP, Diameter, or HTTP/2; rather, it indicates a lack of provided information (NO_INFORMATION).