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Amazon Web Services AWS Certified Solutions Architect - Associate (SAA-C03) SAA-C03 Question # 184 Topic 19 Discussion

Amazon Web Services AWS Certified Solutions Architect - Associate (SAA-C03) SAA-C03 Question # 184 Topic 19 Discussion

SAA-C03 Exam Topic 19 Question 184 Discussion:
Question #: 184
Topic #: 19

A company runs a custom application on Amazon EC2 On-Demand Instances. The application has frontend nodes that must run 24/7. The backend nodes only need to run for short periods depending on the workload.

Frontend nodes accept jobs and place them in queues. Backend nodes asynchronously process jobs from the queues, and jobs can be restarted. The company wants to scale infrastructure based on workload, using the most cost-effective option.

Which solution meets these requirements MOST cost-effectively?


A.

Use Reserved Instances for the frontend nodes. Use AWS Fargate for the backend nodes.


B.

Use Reserved Instances for the frontend nodes. Use Spot Instances for the backend nodes.


C.

Use Spot Instances for the frontend nodes. Use Reserved Instances for the backend nodes.


D.

Use Spot Instances for the frontend nodes. Use AWS Fargate for the backend nodes.


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