SAA-C03 Question #72: Real Exam Question with Answer & Explanation

Question

A company is running a media store across multiple Amazon EC2 instances distributed across multiple Availability Zones in a single VPC. The company wants a high-performing solution to share data between all the EC2 instances, and prefers to keep the data within the VPC only. What should a solutions architect recommend?

Options

• ACreate an Amazon S3 bucket and call the service APIs from each instance's application.
• BCreate an Amazon S3 bucket and configure all instances to access it as a mounted volume.
• CConfigure an Amazon Elastic Block Store (Amazon EBS) volume and mount it across all
• DConfigure an Amazon Elastic File System (Amazon EFS) file system and mount It across all

Explanation

Amazon Elastic File System (EFS) is a managed file storage service that can be mounted across multiple EC2 instances. It provides a scalable and high-performing solution to share data among instances within a VPC. High Performance: EFS provides scalable performance for workloads that require high throughput and IOPS. It is particularly well-suited for applications that need to share data across multiple instances. Ease of Use: EFS can be easily mounted on multiple instances across different Availability Zones, providing a shared file system accessible to all the instances within the VPC. Security: EFS can be configured to ensure that data remains within the VPC, and it supports encryption at rest and in transit. Why Not Other Options? Option A (Amazon S3 bucket with APIs): While S3 is excellent for object storage, it is not a file system and does not provide the low-latency access required for shared data between instances. Option B (S3 bucket as a mounted volume): S3 is not designed to be mounted as a file system, and this approach would introduce unnecessary complexity and latency. Option C (EBS volume shared across instances): EBS volumes cannot be attached to multiple instances simultaneously. It is not designed to be shared across instances like EFS.

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