AWS Certified Solutions Architect Associate · Free Practice Question Medium
Question 23
The customers of a finance company request appointments with financial advisors by sending text messages. A web application that runs on Amazon EC2 instances accepts the appointment requests. The text messages are published to an Amazon Simple Queue Service (Amazon SQS) queue through the web application. Another application that runs on EC2 instances then sends meeting invitations and meeting confirmation email messages to the customers. After successful scheduling, this application stores the meeting information in an Amazon DynamoDB database. As the company expands, customers report that their meeting invitations are taking longer to arrive. What should a solutions architect recommend to resolve this issue?
- A Add a DynamoDB Accelerator (DAX) cluster in front of the DynamoDB database.
- B Add an Auto Scaling group for the application that sends meeting invitations. Configure the Auto Scaling group to scale based on the depth of the SQS queue.
- C Add an Amazon CloudFront distribution. Set the origin as the web application that accepts the appointment requests.
- D Add an Amazon API Gateway API in front of the web application that accepts the appointment requests.
Reveal correct answer
Correct answer: B
Explanation
To resolve the issue of delayed meeting invitations as the company expands, a solutions architect should recommend adding an Auto Scaling group for the application that sends meeting invitations. This Auto Scaling group should be configured to scale based on the depth of the Amazon SQS queue. This approach ensures that the application can handle increased load by automatically adjusting the number of instances based on the volume of appointment requests in the queue.Discussion
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