Question: What is the format for constructing an MME node FQDN, and what values are used to derive it?
Option 1: mmec<MMEC>.mmegi<MMEGI>.mme.epc.mnc<MNC>.mcc<MCC>.3gppnetwork.org
Option 2: mme.mmegi<MMEGI>.epc.mnc<MNC>.mcc<MCC>.3gppnetwork.org
Option 3: mmec<MMEC>.mme.epc.mnc<MNC>.mcc<MCC>.3gppnetwork.org
Option 4: mmegi<MMEGI>.mme.mmec<MMEC>.epc.mnc<MNC>.mcc<MCC>.3gppnetwork.org
Explanation: The MME node FQDN is constructed using the format mmec<MMEC>.mmegi<MMEGI>.mme.epc.mnc<MNC>.mcc<MCC>.3gppnetwork.org, where <MMEC> and <MMEGI> are the hexadecimal strings of the MMEC and MMEGI. This format is used to uniquely identify an MME within an operator's network.