A critical application currently has its data tier in a single AWS Region. The data tier includes a DynamoDB table and an Amazon Aurora MySQL DB cluster. The current Aurora engine supports a global database. The application tier is already deployed in two Regions. Company policy requires that critical applications have both application and data tiers deployed across two Regions. RTO and RPO must be a few minutes. Which combination of steps will make the data tier compliant? (Choose two.)
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Correct answer: Add another AWS Region to the Aurora MySQL DB cluster (use Aurora cross-Region/Global Database capabilities)., Convert the existing DynamoDB table into a global table by adding another Region to the table’s configuration..
Why this is the answer
The correct options address the multi-Region requirement for both data stores with low RTO/RPO. Adding another AWS Region to the Aurora MySQL DB cluster using its Global Database capabilities provides a fully managed, multi-Region database with RPO typically under 1 second and RTO in minutes for regional outages. Converting the existing DynamoDB table into a global table by adding another Region replicates data across Regions with multi-master writes, achieving RPO and RTO in minutes. Incorrect options: "Add another Region to each table in the Aurora MySQL DB cluster" is redundant and inaccurate; Aurora Global Database operates at the cluster level. "Set up scheduled cross-Region backups" would not meet the few-minutes RPO/RTO requirement, as recovery from backups takes significantly longer. "Use Amazon Route 53 Application Recovery Controller" is for automating application failover, not for replicating or recovering database data itself.
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