A Company Built a Food Ordering Application That Captures User

question 89

Multiple Choice

A company built a food ordering application that captures user data and stores it for future analysis. The application's static front end is deployed on an Amazon EC2 instance. The front-end application sends the requests to the backend application running on separate EC2 instance. The backend application then stores the data in Amazon RDS. What should a solutions architect do to decouple the architecture and make it scalable?

• A) Use Amazon S3 to serve the front-end application, which sends requests to Amazon EC2 to execute the backend application. The backend application will process and store the data in Amazon RDS.
• B) Use Amazon S3 to serve the front-end application and write requests to an Amazon Simple Notification Service (Amazon SNS) topic. Subscribe Amazon EC2 instances to the HTTP/HTTPS endpoint of the topic, and process and store the data in Amazon RDS.
• C) Use an EC2 instance to serve the front end and write requests to an Amazon SQS queue. Place the backend instance in an Auto Scaling group, and scale based on the queue depth to process and store the data in Amazon RDS.
• D) Use Amazon S3 to serve the static front-end application and send requests to Amazon API Gateway, which writes the requests to an Amazon SQS queue. Place the backend instances in an Auto Scaling group, and scale based on the queue depth to process and store the data in Amazon RDS.

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Definitions:

Egocentrism

The inability to differentiate between self and other, often resulting in viewing the world solely from one's own perspective.

Conservation

The understanding that certain properties of an object or substance remain the same even when its appearance changes, a concept grasped during the concrete operational stage in Piaget's theory of cognitive development.

Mass

A measure of the amount of matter in an object, fundamental in physics and chemistry for understanding the properties of substances.

Volume

The amount of space that a substance or object occupies, or that is enclosed within a container.