Question: What is a mandatory requirement for the SubjectAltName extension in ePDG (evolved Packet Data Gateway) certificates used for authentication?
Option 1: The SubjectAltName extension shall contain at least one iPAddress component.
Option 2: The SubjectAltName extension may be empty but not marked critical.
Option 3: The SubjectAltName extension is not required for ePDG certificates.
Option 4: The SubjectAltName extension shall contain at least one dNSName component.
Explanation: According to the specified certificate profile for ePDG authentication, the SubjectAltName extension must include at least one dNSName (Domain Name System Name) component. This requirement ensures that the ePDG's identity can be verified through its domain name, enhancing security in the network domain.