Question: What is the correct format for constructing the 5GC nodes DNS subdomain (DNS zone) derived from the MNC and MCC?
Option 1: node.5gc.mnc<MNC>.mcc<MCC>.3gppnetwork.org
Option 2: 5gc.node.mnc<MNC>.mcc<MCC>.3gppnetwork.org
Option 3: mcc<MCC>.mnc<MNC>.node.5gc.3gppnetwork.org
Option 4: mnc<MNC>.mcc<MCC>.5gc.node.3gppnetwork.org
Explanation: The correct format for constructing the 5GC nodes DNS subdomain (DNS zone) is by adding the label "node" to the beginning of the Home Network Domain for 5GC, resulting in node.5gc.mnc<MNC>.mcc<MCC>.3gppnetwork.org. This ensures that the operator has control over this DNS subdomain and can provision any DNS records without concern about future 3GPP standards encroaching on the DNS names within this zone.