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AWS Certified Solutions Architect - Professional · AWS
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Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.
Automated Backups: Good for recovery, but restoring from backup is slow and not instant. Read Replicas: Can be in another Region. You can promote a read replica to be a standalone DB in case of a failover. Global Tables: Only available for DynamoDB, not RDS — this rules out any option mentioning global tables in the context of RDS.
D. Configure read replicas on Amazon RDS. In the case of disruption, promote a cross-Region and read replica to be a standalone DB instance. Direct database traffic to the promoted DB instance. Create a replacement read replica that has the promoted DB instance as its source.
A = you cannot promote an automated backup to a standalone DB (you restore a backup into a new DB instance instead). Creating a read replica could help in this scenario in case it is cross-region. This is not specified B = RDS does not support global table, copying a read replicas from a region to another make no sense to me C = see B D = correct