SOA-C02 · Question #656
A company is deploying a third-party unit testing solution that is delivered as an Amazon EC2 Amazon Machine Image (AMI). The company is deploying the testing solution on On-Demand Instances. The…
The correct answer is C. Configure a launch template that uses the MixedInstancesPolicy property for the Spot Instances. Using the MixedInstancesPolicy in an Auto Scaling group allows you to maintain a mix of On- Demand and Spot Instances while ensuring that at least three On-Demand Instances are always running. The policy dynamically adds Spot Instances when their prices drop below the defined…
Question
A company is deploying a third-party unit testing solution that is delivered as an Amazon EC2 Amazon Machine Image (AMI). The company is deploying the testing solution on On-Demand Instances. The company wants to use an additional three Spot Instances when the Spot Instance prices drop to a specific threshold. A minimum of three instances are required at all times to operate the testing solution. A SysOps administrator must implement high availability for the architecture. Which solution will meet these requirements with the LEAST management overhead?
Options
- AConfigure a launch template for the Spot Instances. Set the maximum price for the Spot
- BConfigure a launch template that uses the InstanceMarketOptions property for the Spot Instances
- CConfigure a launch template that uses the MixedInstancesPolicy property for the Spot Instances
- DConfigure a launch template that uses the InstanceMarketOptions property and the
How the community answered
(22 responses)- A14% (3)
- B5% (1)
- C77% (17)
- D5% (1)
Explanation
Using the MixedInstancesPolicy in an Auto Scaling group allows you to maintain a mix of On- Demand and Spot Instances while ensuring that at least three On-Demand Instances are always running. The policy dynamically adds Spot Instances when their prices drop below the defined threshold, helping to optimize costs while maintaining availability. This approach minimizes management overhead because AWS automatically handles scaling and instance replacements based on pricing and availability. The maximum price for the Spot Instances can be set, ensuring cost efficiency.
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