Logical network inventory, physical resources, service-resource mapping, resource assignment and reconciling discovery with intended inventory records.
3 questions in Telecom.
Logical network inventory should separate physical equipment, logical resources and services, then reconcile discovery as observed state against intended inventory. Do not overwrite the record blindly; classify gaps as faults, drift or orphaned resources. It also connects resource management to the point an interviewer is testing.
Serviceability is four different questions - is the address real, does the network pass it, is there spare capacity on the right piece of it, and may we sell there - and a single yes-or-no answer collapses them. Most failures start in the address model, not the network model. Use this network inventory answer to show the decision, trade-off, and evidence rather than a memorised definition.
Correlation is a traversal of the inventory graph, and an upgrade changes exactly the part being traversed. Model planned as well as as-built state, carry the set of resources a change touches as data, scope suppression to that set rather than to the time window, and confirm recovery positively.