CompTIA Cloud+ (CV0-004) — Question 69

A cloud administrator is provisioning infrastructure to run an application with the following requirements:

• Ten midsize instances need to run as a cluster most of the day.
• Sixteen midsize instances are required during peak hours.
• Costs must be kept low.
• The instances must be deployed in an IaaS model.
• The application has no tolerance for service disruptions.

Which of the following steps should the cloud architect take to host the application?

Answer options

• A. Reserve 16 instances but turn off the unused instances outside of peak hours.
• B. Use ten pay-as-you-go instances and add six spot instances during peak hours.
• C. Deploy reserved instances for normal operation and add pay-as-you-go instances during peak hours.
• D. Configure the workload to use spot instances with scheduled scaling for normal operation, including peak hours.

Correct answer: C

Explanation

The correct answer is C, as it combines reserved instances for consistent operation with the flexibility of pay-as-you-go instances during peak times, ensuring availability without disruption. Option A incurs unnecessary costs by reserving 16 instances while not all are needed. Option B may lead to service interruptions during peak hours because spot instances can be terminated. Option D relies on spot instances, which are not guaranteed and could lead to service disruptions.