AWS DevOps Engineer Professional DOP-C01 – Question352

There are a number of ways to purchase compute capacity on AWS. Which orders the price per compute or memory unit from LOW to HIGH (cheapest to most expensive), on average?

A. On-Demand B. Spot C. Reserved
B. A, B, C
C. C, B, A
D. B, C, A
E. A, C, B

Correct Answer: C

Explanation:

Explanation:
Spot instances are usually many, many times cheaper than on-demand prices. Reserved instances, depending on their term and utilization, can yield approximately 33% to 66% cost savings. On-Demand prices are the baseline price and are the most expensive way to purchase EC2 compute time.
Reference:
https://d0.awsstatic.com/whitepapers/Cost_Optimization_with_AWS.pdf