AWS Certified Cloud Practitioner · Free Practice Question Easy
Question 10
- A Dedicated Hosts
- B Reserved Instances
- C Spot Instances
- D On-Demand
Reveal correct answer
Correct answer: C
Explanation
Spot Instances offer significant discounts, often up to 90%, compared to On-Demand pricing. These instances take advantage of unused EC2 capacity in the AWS cloud. They are ideal for flexible workloads that can tolerate interruptions, such as batch processing, data analysis, and testing. Spot Instances can be terminated by AWS with little notice if the capacity is needed elsewhere, making them less suitable for critical or long-running applications without fault tolerance.A. Dedicated Hosts are not the correct answer because they do not provide discounts of up to 90%. They are designed to give you more control over your server placement and allow you to use your existing server-bound software licenses, but they do not offer the same level of cost savings as Spot Instances, which can provide discounts of up to 90%.
B. Reserved Instances are not the correct answer because they typically offer discounts of up to 75% compared to On-Demand pricing, not up to 90%. Spot Instances are the ones that can provide discounts of up to 90%.
C. Spot Instances can provide discounts of up to 90% because they allow you to bid on unused EC2 capacity. This model offers significant cost savings compared to other pricing models, as it takes advantage of excess capacity in the AWS cloud. However, these instances can be interrupted by AWS with little notice if the capacity is needed elsewhere.
D. On-Demand instances do not provide discounts of up to 90%. They allow you to pay for compute capacity by the hour or second with no long-term commitments, offering flexibility but not the deep discounts associated with Spot Instances.
Discussion
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