Question: In a UTRAN environment, how is the RNC FQDN constructed for use by core network nodes based on the RNC-ID?
Option 1: rnc<RNC>.mnc<MNC>.mcc<MCC>.gsmnetwork.org with <RNC> as a decimal value
Option 2: rnc<RNC>.rnc.epc.mnc<MNC>.mcc<MCC>.3gppnetwork.org with <RNC> as a binary-coded string
Option 3: rnc<RNC>.rnc.epc.mnc<MNC>.mcc<MCC>.3gppnetwork.org with <RNC> as Hex coded digits, padded to 4 digits if necessary
Option 4: sgsn<RNC>.epc.mnc<MNC>.mcc<MCC>.3gppnetwork.net with <RNC> as an alphanumeric identifier
Explanation: The correct construction of the RNC FQDN involves using the Mobile Network Code (MNC) and Mobile Country Code (MCC) with a specific label 'rnc' and the RNC-ID in hexadecimal format, padded to 4 digits if necessary, for efficient DNS record management.