Question: In a 3GPP network, how is the Element Manager (EM) Fully Qualified Domain Name (FQDN) constructed for an operator with a single EM, given the Mobile Country Code (MCC) and Mobile Network Code (MNC)?
Option 1: em.mnc<MNC>.mcc<MCC>.org
Option 2: em.oam.mnc<MNC>.mcc<MCC>.3gppnetwork.org
Option 3: oam.em.mnc<MNC>.mcc<MCC>.network.org
Option 4: mcc<MCC>.mnc<MNC>.em.3gpp.org
Explanation: According to the 3GPP specifications for numbering, addressing, and identification, when constructing an Element Manager's FQDN for a single vendor/operator scenario, the correct format includes the 'oam' label between 'em' and the operator's realm domain name, incorporating both MCC and MNC, and ending with '.3gppnetwork.org'. This ensures uniqueness and standardization across different networks.