SAP-C02 Question #456: Real Exam Question with Answer & Explanation

Question

A solutions architect is creating an application that stores objects in an Amazon S3 bucket. The solutions architect must deploy the application in two AWS Regions that will be used simultaneously. The objects in the two S3 buckets must remain synchronized with each other. Which combination of steps will meet these requirements with the LEAST operational overhead? (Choose three.)

Options

• ACreate an S3 Multi-Region Access Point Change the application to refer to the Multi-Region
• BConfigure two-way S3 Cross-Region Replication (CRR) between the two S3 buckets
• CModify the application to store objects in each S3 bucket
• DCreate an S3 Lifecycle rule for each S3 bucket to copy objects from one S3 bucket to the other
• EEnable S3 Versioning for each S3 bucket
• FConfigure an event notification for each S3 bucket to invoke an AWS Lambda function to copy

Explanation

To deploy an S3-based application across two AWS Regions simultaneously with synchronized objects and minimal operational overhead, S3 Versioning must be enabled on both buckets, two-way S3 Cross-Region Replication configured, and an S3 Multi-Region Access Point used for simplified application access.

Common mistakes.

• C. Modifying the application to handle replication logic significantly increases development complexity and operational overhead, as the application would need to manage data consistency, failures, and retries across regions.
• D. S3 Lifecycle rules are primarily for managing object lifecycle states and are not the ideal or most efficient mechanism for implementing robust, real-time two-way cross-region synchronization compared to S3 CRR.
• F. Using AWS Lambda functions for custom replication logic introduces additional operational overhead for managing, monitoring, and debugging the Lambda code, which is less efficient than using the native S3 Cross-Region Replication feature.

Concept tested. S3 Multi-Region Access Points, Cross-Region Replication, S3 Versioning

Reference. https://docs.aws.amazon.com/AmazonS3/latest/userguide/MultiRegionAccessPoints.html

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