AWS Certified Cloud Practitioner (CLF-C02) — Question 23

An e-learning platform needs to run an application for 2 months each year. The application will be deployed on Amazon EC2 instances. Any application downtime during those 2 months must be avoided.
Which EC2 purchasing option will meet these requirements MOST cost-effectively?

Answer options

Correct answer: D

Explanation

On-Demand Instances allow for flexible usage without long-term commitments, making them ideal for applications that only need to run for a limited time each year. Reserved Instances, while cost-effective for long-term usage, do not suit this short-term need. Dedicated Hosts are more expensive and unnecessary for the described scenario, and Spot Instances can lead to interruptions, which contradicts the requirement for no downtime.