AWS Certified Cloud Practitioner CLF-C02Demo

By Amazon · Question Mode

QuestionQ602

Content Domain 4: Billing, Pricing, and Support

A company is running a reporting web server application on Amazon EC2 instances. The application runs once every week and once again at the end of the month. The EC2 instances can be shut down when they are not in use.

What is the MOST cost-effective billing model for this use case?

  • A Standard Reserved Instances
  • B Convertible Reserved Instances
  • C On-Demand Capacity Reservations
  • D On-Demand Instances
Explanation

Because the workload runs only briefly once a week and once a month with instances shut down otherwise, paying only for the seconds/hours actually used under On-Demand pricing is cheapest overall. Reserved Instance options require a long-term commitment that isn't justified by such sparse usage, and On-Demand Capacity Reservations incur charges for reserved capacity regardless of whether the instance is actually running.

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