Top 3 Provisioning Interview Questions
Browse 3 real-world technical and behavioral interview questions about Provisioning. Review scenarios, edge cases, and architectural best practices.
A customer ports their number away to another operator. What has to happen on your side, and what usually goes wrong?
A port is an externally timed event you do not control, so your cease has to land with it and not before. The failures are asymmetric: cease early and the customer loses service, cease late and you keep billing a number you no longer serve while usage records still arrive.
A subscriber's service is working on the network but no subscription exists in billing. How did that happen, and what do you do about it?
An activation half-succeeded and nobody owns the divergence. Detect it by reconciling the network's view against the subscription record, classify which side is wrong, re-drive fulfilment from stored intent rather than patching either side, and treat the unbilled period as a decided commercial policy.
Walk me through what happens between a customer order being captured and the service being live on the network.
The order is decomposed against the product catalogue into technical tasks on separate systems, each with its own latency and failure mode. Because nothing spans them transactionally, correctness comes from idempotent tasks, compensating actions, a fallout queue and jeopardy monitoring.