Question: What is the correct format for constructing an NSSF FQDN for an NSSF in an operator's PLMN?
Option 1: nssf.5gc.mnc<MNC>.mcc<MCC>.3gppnetwork.org
Option 2: nssf.5gc.nid<NID>.mnc<MNC>.mcc<MCC>.3gppnetwork.org
Option 3: mnc<MNC>.mcc<MCC>.nssf.5gc.3gppnetwork.org
Option 4: mcc<MCC>.mnc<MNC>.nssf.5gc.3gppnetwork.org
Explanation: According to the specification, the NSSF FQDN for an NSSF in an operator's PLMN is constructed by prefixing its Home Network Domain Name with the label "nssf." as described in the format nssf.5gc.mnc<MNC>.mcc<MCC>.3gppnetwork.org. This ensures unique identification of the NSSF within the PLMN.