Microsoft Certified Azure Fundamentals · Free Practice Question Medium
Question 61
A company frequently experiences variable workloads with unpredictable demand spikes for its Azure-hosted application. It wants to optimize costs while ensuring that resources are available during peak usage periods without incurring charges during low-demand periods. Which combination of pricing models would be most suitable to achieve this?
-
A
Consumption-based model with Spot Instances for cost reduction during low demand periods
-
B
Pay-as-you-go pricing for both unpredictable and predictable workloads
-
C
Consumption-based model for unpredictable demand and Reserved Instances for long-term predictable usage
-
D
Spot Instances for scalability and Reserved Instances for baseline capacity
Reveal correct answer
Correct answer: C
Explanation
In this scenario, the company can use the consumption-based model to handle unpredictable demand and Reserved Instances to ensure cost optimization for baseline, predictable usage. Reserved Instances offer discounted pricing in exchange for a one- or three-year commitment, making it ideal for stable, predictable workloads. Meanwhile, the consumption-based model ensures the flexibility to scale during variable demand periods without overpaying when resources are not needed.
A. While a consumption-based model is suitable for unpredictable demand, using Spot Instances for cost reduction during low-demand periods may not guarantee resource availability during peak usage periods. Reserved Instances would be more appropriate for ensuring resources are available during peak periods without incurring charges during low-demand periods.
B. Pay-as-you-go pricing may not be the most cost-effective option for a company with variable workloads and unpredictable demand spikes, as it could result in higher costs during peak periods. Utilizing Reserved Instances for both unpredictable and predictable workloads may not optimize costs effectively.
C. A consumption-based model is ideal for unpredictable demand as it allows for flexible usage and payment based on actual resource consumption. Reserved Instances are beneficial for long-term predictable usage, offering cost savings and resource availability during peak periods without incurring charges during low-demand periods.
D.
While Reserved instances are great for ensuring baseline capacity, spot instances are not guaranteed and aren't meant for scalability.
Discussion
Think the marked answer is wrong, or have a better explanation? Share it below — comments appear after review.
