Question: What is the relevance of Diameter NASREQ (IETF RFC 7155) AVPs in the context of the SGmb interface?
Option 1: All Diameter NASREQ AVPs are required for compliance with the SGmb interface.
Option 2: Only a subset of Diameter NASREQ AVPs, specifically those marked with "M", are required for compliance with the SGmb interface.
Option 3: Diameter NASREQ AVPs are not relevant to the SGmb interface and can be ignored.
Option 4: While some Diameter NASREQ AVPs may be useful, only the SGmb specific AVPs are strictly necessary for compliance with the SGmb interface.
Explanation: The correct answer is Option 4 because the text states that "Other Diameter NASREQ...AVPs...are not required for being compliant with the current specification" and that "All SGmb specific AVPs...are needed to be compliant to the SGmb interface unless otherwise stated". This implies that while some Diameter NASREQ AVPs may be useful, only the SGmb specific AVPs are strictly necessary for compliance.