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GCP Professional Cloud Architect Practice Question

Your team will migrate a 15-TB on-premises MySQL database to Cloud SQL for MySQL by using Database Migration Service (DMS). Management asks for a proof of concept (POC) that validates the approach and produces a data-driven downtime estimate for the final cut-over. Which single action is essential to include in the POC so that you can derive an accurate downtime number?

  • Review the project's DMS connection quotas and network-egress limits to confirm they remain within published thresholds.

  • Continuously monitor and record replication-lag metrics during the DMS continuous-migration job until the lag stabilises near zero.

  • Export the entire on-premises database to Cloud Storage, import it into Cloud SQL, and time the file transfer and import steps.

  • Run synthetic workload scripts against an empty Cloud SQL instance to measure query latency under load.

GCP Professional Cloud Architect
Analyzing and optimizing technical and business processes
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