SAP-C02 · Question #875
A company runs a workload on AWS. The company's current infrastructure uses Amazon EC2 instances and Amazon RDS DB instances. The EC2 instances perform stateful work that cannot be interrupted. The…
The correct answer is C. Purchase 1-year EC2 Reserved Instances with the All Upfront option to meet the workflow's usage. Steady, predictable base load with occasional spikes is most cost-effective by covering the baseline EC2 and RDS usage with 1-year All Upfront Reserved Instances, and handling spikes with On-Demand capacity via Auto Scaling. AWS Trusted Advisor then surfaces underused resources…
Question
A company runs a workload on AWS. The company's current infrastructure uses Amazon EC2 instances and Amazon RDS DB instances. The EC2 instances perform stateful work that cannot be interrupted. The instances have a predictable and steady base traffic pattern with occasional spikes throughout each year. The company expects the traffic pattern to remain the same for the coming year. The company wants to optimize the running cost for the workload and to identify underused resources. Which solution will meet these requirements MOST cost-effectively?
Options
- AImplement an EC2 Auto Scaling group with Spot Instances. Purchase a 1-year Reserved Instance
- BImplement an EC2 Auto Scaling group with On-Demand Instances. Purchase a 3-year Convertible
- CPurchase 1-year EC2 Reserved Instances with the All Upfront option to meet the workflow's usage
- DPurchase 1-year EC2 Reserved Instances with the All Upfront option to meet the peak load.
How the community answered
(47 responses)- A4% (2)
- B9% (4)
- C74% (35)
- D13% (6)
Explanation
Steady, predictable base load with occasional spikes is most cost-effective by covering the baseline EC2 and RDS usage with 1-year All Upfront Reserved Instances, and handling spikes with On-Demand capacity via Auto Scaling. AWS Trusted Advisor then surfaces underused resources for optimization.
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