AWS Certified Solutions Architect – Associate (SAA-C03) — Question 660

A company has an application that uses Docker containers in its local data center. The application runs on a container host that stores persistent data in a volume on the host. The container instances use the stored persistent data.

The company wants to move the application to a fully managed service because the company does not want to manage any servers or storage infrastructure.

Which solution will meet these requirements?

Answer options

• A. Use Amazon Elastic Kubernetes Service (Amazon EKS) with self-managed nodes. Create an Amazon Elastic Block Store (Amazon EBS) volume attached to an Amazon EC2 instance. Use the EBS volume as a persistent volume mounted in the containers.
• B. Use Amazon Elastic Container Service (Amazon ECS) with an AWS Fargate launch type. Create an Amazon Elastic File System (Amazon EFS) volume. Add the EFS volume as a persistent storage volume mounted in the containers.
• C. Use Amazon Elastic Container Service (Amazon ECS) with an AWS Fargate launch type. Create an Amazon S3 bucket. Map the S3 bucket as a persistent storage volume mounted in the containers.
• D. Use Amazon Elastic Container Service (Amazon ECS) with an Amazon EC2 launch type. Create an Amazon Elastic File System (Amazon EFS) volume. Add the EFS volume as a persistent storage volume mounted in the containers.

Correct answer: B

Explanation

Amazon ECS with AWS Fargate is a serverless container hosting service that eliminates the need to provision or manage underlying EC2 instances, meeting the requirement of a fully managed compute service. Amazon Elastic File System (Amazon EFS) is a fully managed, serverless storage service that natively integrates with ECS tasks on Fargate to provide persistent file storage. Other options involving self-managed EKS nodes or EC2 launch types are incorrect because they require the company to manage the underlying server infrastructure.