AWS Certified Solutions Architect Associate SAA-C03 Practice Question
A company needs to ensure its primary database supporting a web application remains available with minimal interruption to the service, even in the event of a complete regional outage. The current architecture uses a managed relational database service provided by AWS. Which implementation will best meet the company's requirements?
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Establish a replication mechanism across multiple geographic regions for the current database service.
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Configure multiple read replicas within the same region and enable automated backups.
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Leverage an automated backup solution with the ability to restore in a different region upon failure.
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Create a global table to manage multi-region deployment for the database.
Setting up cross-region replicas for the managed database service enables asynchronous copying of data to replicas in other regions, which aligns with the need for high availability and fault tolerance across regions. In the event the primary region fails, one of the replicas can be promoted to become the new primary, minimizing service interruption. Configuring read replicas within a single region only provides increased read scaling and some fault tolerance within that region, but does not protect against regional outages. Global tables are a feature specific to Amazon DynamoDB, which may not be applicable if the application isn't already using DynamoDB. AWS Backup is primarily for data recovery and does not offer immediate failover capabilities for real-time high availability.
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