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Amazon CLF-C02: Which configuration change with the LEAST operational overhead to rightsize EC2 instances?

By: Author Alex Lim

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Question

A company wants to rightsize its Amazon EC2 instances. Which configuration change will meet this requirement with the LEAST operational overhead?

A. Add EC2 instances in another Availability Zone.
B. Change the size and type of the EC2 instances based on utilization.
C. Convert the payment method from On-Demand to Savings Plans.
D. Reprovision the EC2 instances with a larger instance type.

Answer

B. Change the size and type of the EC2 instances based on utilization.

Explanation

The correct answer is B. Change the size and type of the EC2 instances based on utilization.

This is because changing the size and type of the EC2 instances will only affect the instances that are underutilized. This will minimize the operational overhead, as you will not need to make any changes to the instances that are already meeting their requirements.

The other options are incorrect because:

  • Option A, adding EC2 instances in another Availability Zone, will increase the number of instances that the company needs to manage. This will increase the operational overhead.
  • Option C, converting the payment method from On-Demand to Savings Plans, can save the company money in the long run, but it will require some initial configuration. This will increase the operational overhead.
  • Option D, reprovisioning the EC2 instances with a larger instance type, will increase the capacity of the instances. This can be useful if the company expects an increase in demand, but it will also increase the cost of the instances.

Therefore, the best option to rightsize the Amazon EC2 instances with the LEAST operational overhead is to change the size and type of the instances based on utilization.

Here are some additional things to consider when rightsizing Amazon EC2 instances:

  • The workload that the instances are running.
  • The amount of CPU and memory that the workload requires.
  • The expected demand for the workload.
  • The cost of the different instance types.

By carefully considering these factors, you can rightsize your Amazon EC2 instances to meet your needs while minimizing your costs.

Which configuration change with the LEAST operational overhead to rightsize EC2 instances?

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