Question: What is the correct format for deriving a Security Gateway (SeGW) Fully Qualified Domain Name (FQDN) in a single-vendor deployment scenario?
Option 1: segw.oam.mnc<MNC>.mcc<MCC>.3gppnetwork.org
Option 2: vendor<ViD>.segw.oam.mnc<MNC>.mcc<MCC>.3gppnetwork.org
Option 3: mnc<MNC>.mcc<MCC>.segw.oam.3gppnetwork.org
Option 4: mcc<MCC>.mnc<MNC>.vendor<ViD>.segw.oam.3gppnetwork.org
Explanation: According to the specification, in a single-vendor deployment scenario, the SeGW FQDN is derived by adding the "segw" label in front of the operator's OAM realm domain name, resulting in the format segw.oam.mnc<MNC>.mcc<MCC>.3gppnetwork.org.