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AWS Certified Solutions Architect - Associate · AWS
Select one answer.
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A seems logic to me. D seems legit as well but it does not guarantee everything will be live in 30 minutes.
The Aurora Global Database would be ideal for a production system requiring near-instantaneous failover, however, it was not in the options. Since the option D may not meet the 30-minute tolerance, I choose option A- Aurora Replica-based disaster recovery although replication is more designed for reading traffic, it can still be used for failover based on this doc https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Aurora.Replication.html.
D is right