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Exam AWS Certified DevOps Engineer - Professional DOP-C02 All Questions

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Exam AWS Certified DevOps Engineer - Professional DOP-C02 topic 1 question 226 discussion

Exam question from Amazon's AWS Certified DevOps Engineer - Professional DOP-C02
Question #: 226
Topic #: 1
[All AWS Certified DevOps Engineer - Professional DOP-C02 Questions]

A company is using AWS CodeDeploy to automate software deployment. The deployment must meet these requirements:

• A number of instances must be available to serve traffic during the deployment. Traffic must be balanced across those instances, and the instances must automatically heal in the event of failure. • A new fleet of instances must be launched for deploying a new revision automatically, with no manual provisioning.
• Traffic must be rerouted to the new environment to half of the new instances at a time. The deployment should succeed if traffic is rerouted to at least half of the instances: otherwise, it should fail.
• Before routing traffic to the new fleet of instances, the temporary files generated during the deployment process must be deleted.
• At the end of a successful deployment, the original instances in the deployment group must be deleted immediately to reduce costs.

How can a DevOps engineer meet these requirements?

  • A. Use an Application Load Balancer and an in-place deployment. Associate the Auto Scaling group with the deployment group. Use the Automatically copy Auto Scaling group option, and use CodeDeployDefault.OneAtAtime as the deployment configuration. Instruct AWS CodeDeploy to terminate the original instances in the deployment group, and use the AllowTraffic hook within appspec.yml to delete the temporary files.
  • B. Use an Application Load Balancer and a blue/green deployment. Associate the Auto Scaling group and Application Load Balancer target group with the deployment group. Use the Automatically copy Auto Scaling group option, create a custom deployment configuration with minimum healthy hosts defined as 50%, and assign the configuration to the deployment group. Instruct AWS CodeDeploy to terminate the original instances in the deployment group, and use the BeforeBlockTraffic hook within appspec.yml to delete the temporary files.
  • C. Use an Application Load Balancer and a blue/green deployment. Associate the Auto Scaling group and the Application Load Balancer target group with the deployment group. Use the Automatically copy Auto Scaling group option, and use CodeDeployDefault.HalfAtAtime as the deployment configuration. Instruct AWS CodeDeploy to terminate the original instances in the deployment group, and use the BeforeAllowTraffic hook within appspec.yml to delete the temporary files.
  • D. Use an Application Load Balancer and an in-place deployment. Associate the Auto Scaling group and Application Load Balancer target group with the deployment group. Use the Automatically copy Auto Scaling group option, and use CodeDeployDefault.AllatOnce as a deployment configuration. Instruct AWS CodeDeploy to terminate the original instances in the deployment group, and use the BlockTraffic hook within appspec.yml to delete the temporary files.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by KaranNishad at June 27, 2024, 7:49 p.m.
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jamesf
2 months, 2 weeks ago
Selected Answer: C
Option C is the best choice as it meets all the given requirements by utilizing a blue/green deployment strategy, correct traffic routing, proper temporary file cleanup timing, and automatic instance termination to manage costs. Option B is wrong due to: - Allows for custom deployment configuration, ensuring at least 50% of the instances must be healthy. However, "reroute to half" is somewhat ambiguous, as custom deployment with 50% only ensures half remain healthy but doesn't explicitly guarantee half reroute. - Uses BeforeBlockTraffic hook, which is not the correct timing for cleaning up temporary files because it should occur after instance provisioning but before allowing traffic.
upvoted 2 times
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tgv
3 months ago
---> C
upvoted 1 times
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trungtd
3 months, 1 week ago
Selected Answer: C
Automatically Copy Auto Scaling Group: This option allows launching a new fleet of instances for each deployment automatically. CodeDeployDefault.HalfAtAtime Deployment Configuration: This configuration meets the requirement of rerouting traffic to half of the new instances at a time. It ensures that the deployment succeeds if traffic is rerouted to at least half of the instances, otherwise, it fails.
upvoted 2 times
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6ef9a08
3 months, 2 weeks ago
Selected Answer: C
B: blue/green deployment with CodeDeployDefault.HalfAtAtime
upvoted 3 times
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