Google Professional Cloud DevOps Engineer Question 229
Single answerGoogle Cloud PlatformYour team has been tasked with deploying a critical application on Google Cloud. The application must maintain an availability of 99.99% (four nines) to meet SLA requirements. However, achieving this level of reliability will require significantly more resources and engineering effort compared to a 99.9% (three nines) availability target. As the DevOps Engineer, how should you evaluate whether pursuing 99.99% availability is worth the additional cost?
- A
Evaluate the business impact of downtime and compare it against the cost of achieving the higher availability target.
- B
Always aim for the highest possible availability to ensure user satisfaction regardless of cost.
- C
Assess whether the additional reliability aligns with user expectations and the criticality of the application.
- D
Focus on optimizing costs and choose the cheapest availability option, as Google Cloud services are inherently reliable.
Show answer and explanation
Correct answer: A
Explanation
Achieving higher availability, such as 99.99%, often requires significant additional investment in resources, redundancy, and engineering. However, not all applications require the same level of reliability. By evaluating the business cost of downtime and comparing it to the investment needed for higher availability, you can make an informed decision that aligns reliability goals with business priorities. This ensures that resources are allocated efficiently without compromising on critical application requirements.
- A. Correct.
Correct. Evaluating the business impact of downtime and comparing it against the cost of achieving higher availability ensures a balanced decision. This approach aligns reliability goals with business value.
- B. Incorrect.
Incorrect. While high availability is important, blindly aiming for the highest possible availability without considering cost and business impact can lead to inefficient resource usage.
- C. Incorrect.
Incorrect. While user expectations and application criticality are relevant, they are only part of the evaluation. The cost-benefit analysis of downtime versus reliability investment is critical.
- D. Incorrect.
Incorrect. While cost optimization is important, choosing the cheapest option without considering the application's requirements or SLA commitments can result in unmet reliability needs.