CLF-C02 Question 46
Single answerAn e-commerce company has noticed that their application servers are consistently underutilized, with CPU usage averaging around 10% during peak times. They want to reduce costs while ensuring the servers still meet demand. Which of the following represents the BEST approach to achieve this using the concept of rightsizing?
- A
Switch the application servers to a smaller instance type that matches their workload requirements.
- B
Terminate the underutilized servers and rely entirely on Auto Scaling to handle demand spikes.
- C
Upgrade the application servers to a larger instance type to handle unexpected spikes in demand.
- D
Migrate the application to Reserved Instances to reduce costs while keeping the current instance size.
Show answer and explanation
Correct answer: A
Explanation
Rightsizing in AWS involves analyzing the resource utilization of your workloads and selecting the most appropriate instance type or size to optimize costs and performance. In this scenario, switching to a smaller instance type ensures that the company can reduce costs while maintaining sufficient capacity to handle their workload.
- A. Correct.
Switching to a smaller instance type that matches the workload requirements is an example of rightsizing. It helps reduce costs while ensuring the application can still meet its performance needs.
- B. Incorrect.
Terminating the underutilized servers without considering workload requirements may result in insufficient capacity during peak times, which is not aligned with the concept of rightsizing.
- C. Incorrect.
Upgrading to a larger instance type would increase costs unnecessarily, as the current workload doesn't require additional resources.
- D. Incorrect.
While Reserved Instances can reduce costs, this option does not involve resizing the instances and therefore does not address the underutilization issue.