AWS Certified DevOps Engineer - Professional DOP-C02 — Topic 1 Question 139

Question

A company's DevOps engineer is creating an AWS Lambda function to process notifications from an Amazon Simple Notification Service (Amazon SNS) topic. The Lambda function will process the notification messages and will write the contents of the notification messages to an Amazon RDS Multi-AZ DB instance. During testing, a database administrator accidentally shut down the DB instance. While the database was down the company lost several of the SNS notification messages that were delivered during that time. The DevOps engineer needs to prevent the loss of notification messages in the future. Which solutions will meet this requirement? (Choose two.)

Accepted Answer

Correct answer: C, D. The correct answer is C, D. Option C: Configure an Amazon Simple Queue Service (Amazon SQS) dead-letter queue for the SNS topic. Option D: Subscribe an Amazon Simple Queue Service (Amazon SQS) queue to the SNS topic. Configure the Lambda function to process messages from the SQS queue. AWS Lambda runs code without provisioning servers and scales automatically, which minimizes operational overhead. Amazon SQS is a fully managed message queue that decouples components and absorbs traffic spikes. Amazon SNS is a managed pub/sub service for fan-out notifications to many subscribers. By spanning multiple Availability Zones / adding redundancy, this option provides the high availability and resilience required.

AWS Certified DevOps Engineer - Professional DOP-C02 — Question 139