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Question 44 of 129
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eventbridge detects failure events from RDS. It triggers a almbda function to: Promote the cross-region read replica. Update the endpoint in parameter store. the app is designed to reload the DB endpoint from parameter store if it detects a connection issues this supports automated failover with minimal downtime and makes the endpoint configurable rather than hardcoded
D is correct. Option B is wrong as AWS CloudTrail to run an AWS Lambda function to promote the replica instance doesn't provide an automated way.
Option B is wrong also due to: - Custom Endpoint Management: Extra complexity in managing and updating endpoints dynamically. - Lag in Promotion: Possible delays due to CloudTrail event delivery and Lambda invocation. - Reliance on CloudTrail: Lag in event processing can cause potential downtime or data inconsistency.