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 the Application Load Balancer target group with the deployment group. Use the Automatically option, create a custom deployment configuration with minimum copy Auto Scaling group 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 BeforeBlock Traffic hook within appsec.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 option, and use CodeDeployDefault HalfAtAtime as the deployment copy Auto Scaling group configuration. Instruct AWS CodeDeploy to terminate the original isntances 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 option, and use CodeDeployDefault AllatOnce as a deployment configuration.
  Auto Scaling group
  Instruct AWS CodeDeploy to terminate the original instances in the deployment group, and use the BlockTraffic hook within appsec.yml to delete the temporary files.

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Your company has a number of Cloudformation stacks defined in AWS. As part of the routine housekeeping activity, a number of stacks have been targeted for deletion. But a few of the stacks are not getting deleted and are failing when you are trying to delete them. Which of the following could be valid reasons for this? Choose
2 answers from the options given below

• A.Thestacks were created with the wrong template version. Since the standardtemplate version is now higher, it is preventing the deletion of the stacks.You need to contact AWS support.
• B.Thestack has an S3 bucket defined which has objects present in it.
• C.Thestack has a EC2 Security Group which has EC2 Instances attached to it.
• D.Thestack consists of an EC2 resource which was created with a custom AMI.

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What is the order of most-to-least rapidly-scaling (fastest to scale first)?
A: EC2 + ELB + Auto Scaling
B: Lambda
C: RDS

• A.B, A, C
• B.C, B, A
• C.C, A, B
• D.A, C, B

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Some of your EC2 instances are configured to use a Proxy. Can you use Amazon Inspector for regular assessment of instances behind proxy?

• A.Only Windows-based systems are supported as Linux-based systems use custom configurations that are not supported by AWS Agent in the current release.
• B.Only Linux-based systems are supported, and AWS agent supports HTTPS proxy on these systems.
• C.No, AWS Agent does NOT support proxy environments.
• D.Yes, AWS Agent supports proxy environments on both Linux-based and Windows-based systems.

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For AWS CloudFormation, which stack state refuses UpdateStack calls?

• A.<code>UPDATE_ROLLBACK_FAILED</code>
• B.<code>UPDATE_ROLLBACK_COMPLETE</code>
• C.<code>UPDATE_COMPLETE</code>
• D.<code>CREATE_COMPLETE</code>

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