Exam AWS Certified Solutions Architect - Professional SAP-C02 topic 1 question 95 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional SAP-C02

Question #: 95
Topic #: 1

[All AWS Certified Solutions Architect - Professional SAP-C02 Questions]

A company is refactoring its on-premises order-processing platform in the AWS Cloud. The platform includes a web front end that is hosted on a fleet of VMs, RabbitMQ to connect the front end to the backend, and a Kubernetes cluster to run a containerized backend system to process the orders. The company does not want to make any major changes to the application.

Which solution will meet these requirements with the LEAST operational overhead?

A. Create an AMI of the web server VM. Create an Amazon EC2 Auto Scaling group that uses the AMI and an Application Load Balancer. Set up Amazon MQ to replace the on-premises messaging queue. Configure Amazon Elastic Kubernetes Service (Amazon EKS) to host the order-processing backend.
B. Create a custom AWS Lambda runtime to mimic the web server environment. Create an Amazon API Gateway API to replace the front-end web servers. Set up Amazon MQ to replace the on-premises messaging queue. Configure Amazon Elastic Kubernetes Service (Amazon EKS) to host the order-processing backend.
C. Create an AMI of the web server VM. Create an Amazon EC2 Auto Scaling group that uses the AMI and an Application Load Balancer. Set up Amazon MQ to replace the on-premises messaging queue. Install Kubernetes on a fleet of different EC2 instances to host the order-processing backend.
D. Create an AMI of the web server VM. Create an Amazon EC2 Auto Scaling group that uses the AMI and an Application Load Balancer. Set up an Amazon Simple Queue Service (Amazon SQS) queue to replace the on-premises messaging queue. Configure Amazon Elastic Kubernetes Service (Amazon EKS) to host the order-processing backend.

Show Suggested Answer

Suggested Answer: A 🗳️

by masetromain at Jan. 15, 2023, 10:10 a.m.

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masetromain

Highly Voted 2 years, 7 months ago

Selected Answer: A

Option A is the correct answer. In this solution, the company creates an Amazon Machine Image (AMI) of the web server VM, which can be used to launch EC2 instances that are identical to the on-premises web servers. The company then creates an EC2 Auto Scaling group that uses the AMI and an Application Load Balancer (ALB) to provide automatic scaling and high availability for the web front end. The company also replaces the on-premises messaging queue (RabbitMQ) with Amazon MQ, which is a managed message broker service that is fully compatible with RabbitMQ. Finally, the company uses Amazon Elastic Kubernetes Service (EKS) to host the order-processing backend, which allows them to run their existing Kubernetes cluster in the AWS cloud without making any major changes to the application. This approach allows the company to lift and shift their existing platform with minimal operational overhead.

upvoted 21 times

pk0619

8 months ago

AMI is an AWS EC2 specific, I am confused on how to create an AMI of an on-premise VM and launch instance from it ?

upvoted 1 times

pk0619

8 months ago

Looking back, it seems the intent might have been to use VM Import/Export or the AWS Application Migration Service (MGN) to create an AMI. However, it is a significant oversimplification to skip those critical steps and simply state "create an AMI," as this assumes the process is straightforward without addressing the necessary prerequisites and tools.

upvoted 1 times

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masetromain

2 years, 7 months ago

Option B, using a custom AWS Lambda runtime and Amazon API Gateway, would require significant changes to the application and may not be compatible with the current codebase. Option C, installing Kubernetes on a fleet of different EC2 instances, would also require significant changes to the application and may not be compatible with the current codebase. Option D, using Amazon Simple Queue Service (Amazon SQS) instead of Amazon MQ, would not provide the same level of messaging capabilities as Amazon MQ and may not be sufficient for the needs of the order-processing platform.

upvoted 4 times

sambb

2 years, 5 months ago

Your justification for option C is wrong. Option C is valid, as Kubernetes on EC2 is very similar as the existing Kubernetes environment on-premises. But EKS is a safe bet and reduces operational overhead, while keeping the same API as previously. Hence, A is a better choice.

upvoted 10 times

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2 years, 6 months ago

Selected Answer: B

Option A is re-hosting or mybe re-platforming. The question says the purpose is re-factoring, then it's B.

upvoted 2 times

c73bf38

2 years, 6 months ago

It says the company does not want to make changes to the application in the problem statement. B would require significant code changes to the application.

upvoted 6 times

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