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NEW QUESTION 26
You have a high security requirement for your AWS accounts. What is the most rapid and sophisticated setup you can use to react to AWS API calls to your account?

  • A. CloudWatch Events Rules which trigger based on all AWS API calls, submitting all events to an AWS Kinesis Stream for arbitrary downstream analysis.
  • B. Use a CloudWatch Rule ScheduleExpression to periodically analyze IAM credential logs. Push the deltas for events into an ELK stack and perform ad-hoc analysis there.
  • C. Global AWS CloudTrail setup delivering to S3 with an SNS subscription to the deliver notifications, pushing into a Lambda, which inserts records into an ELK stack for analysis.
  • D. Subscription to AWS Config via an SNS Topic. Use a Lambda Function to perform in-flight analysis and reactivity to changes as they occur.

Answer: A

Explanation:
CloudWatch Events allow subscription to AWS API calls, and direction of these events into Kinesis Streams. This allows a unified, near real-time stream for all API calls, which can be analyzed with any tool(s) of your choosing downstream.
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/EventTypes.html#api_e vent_ty pe

 

NEW QUESTION 27
You have a playbook that includes a task to install a package for a service, put a configuration file for that package on the system and restart the service. The playbook is then run twice in a row.
What would you expect Ansible to do on the second run?

  • A. Remove the old package and config file and reinstall and then restart the service.
  • B. Take no action on the target host.
  • C. Attempt to reinstall the package, copy the file and restart the service.
  • D. Check if the package is installed, check if the file matches the source file, if not reinstall it; restart the service.

Answer: D

Explanation:
Ansible follows an idempotence model and will not touch or change the system unless a change is warranted.
Reference: http://docs.ansible.com/ansible/glossary.html

 

NEW QUESTION 28
A DevOps Engineer at a startup cloud-based gaming company has the task formalizing deployment strategies. The strategies must meet the following requirements:
– Use standard Git commands, such as git clone and git push for the
code repository.
– Management tools should maximize the use of platform solutions where
possible.
– Deployment packages must be immutable and in the form of Docker
images.
How can the Engineer meet these requirements?

  • A. Use a Jenkins pipeline to trigger a build process when software is pushed to a private GitHub repository.
    AWS CodePipeline will use AWS CodeBuild new Docker images.
    CodePipeline will deploy into a second target group in Amazon ECS behind an Application Load Balancer.
    Cutover will be managed by swapping the listener rules on the Application Load Balancer.
  • B. Use AWS CodePipeline to trigger a build process when software is pushed to a private GitHub repository.
    CodePipeline will use AWS CodeBuild to build new Docker images.
    CodePipeline will deploy into a second target group in Amazon ECS behind an Application Load Balancer.
    Cutover will be managed by swapping the listener rules on the Application Load Balancer.
  • C. Use AWS CodePipeline to trigger a build process when software is pushed to a self-hosted GitHub repository.
    CodePipeline will use a Jenkins build server to build new Docker images.
    CodePipeline will deploy into a second target group in Amazon ECS behind an Application Load Balancer.
    Cutover will be managed by swapping the listener rules on the Application Load Balancer.
  • D. Use AWS CodePipeline to trigger a build process when software is pushed to an AWS CodeCommit repository CodePipeline will use an AWS CodeBuild build server to build new Docker images.
    CodePipeline will deploy into a second target group in a Kubernetes Cluster hosted on Amazon EC2 behind an Application Load Balancer.
    Cutover will be managed by swapping the listener rules on the Application Load Balancer.

Answer: B

 

NEW QUESTION 29
A DevOps Engineer is working on a project that is hosted on Amazon Linux and has failed a security review. The DevOps Manager has been asked to review the company buildspec.yami file for an AWS CodeBuild project and provide recommendations. The builspec.yami file is configured as follows:

What changes should be recommended to comply with AWS security best practices? (Select THREE.)

  • A. Store the DB_PASSWORD as a SecurityString value in AWS Systems Manager Parameter Store and then remove the DB_PASSWORD from the environment variables.
  • B. Move the environment variables to the `db-deploy-bucket’ Amazon S3 bucket, add a prebuild stage to download, then export the variables.
  • C. Add a post-build command to remove the temporary files from the container before termination to ensure they cannot be seen by other CodeBuild users.
  • D. Update the CodeBuild project role with the necessary permissions and then remove the AWS credentials from the environment variable.
  • E. Use AWS Systems Manager run command versus scp and ssh commands directly to the instance.
  • F. Scramble the environment variables using XOR followed by Base64, add a section to install, and then run XOR and Base64 to the build phase.

Answer: A,D,E

Explanation:
A is not required because CodeBuild runs your build in fresh environments isolated from other users and discards each build environment upon completion.
https://aws.amazon.com/codebuild/faqs/#

 

NEW QUESTION 30
A company has an application that has predictable peak traffic times. The company wants the application instances to scale up only during the peak times. The application stores state in Amazon DynamoDB. The application environment uses a standard Node.js application stack and custom Chef recipes stored in a private Git repository.
Which solution is MOST cost-effective and requires the LEAST amount of management overhead when performing rolling updates of the application environment?

  • A. Configure AWS OpsWorks stacks and push the custom recipes to an Amazon S3 bucket and configure custom recipes to point to the S3 bucket. Then add an application layer type for a standard Node.js application server and configure the custom recipe to deploy the application in the deploy step from the S3 bucket. Configure time-based instances and attach an Amazon EC2 IAM role that provides permission to access DynamoDB.
  • B. Create a Docker file that uses the Chef recipes for the application environment based on an official Node.js Docker image. Create an Amazon ECS cluster and a service for the application environment, then create a task based on this Docker image. Use scheduled scaling to scale the containers at the appropriate times and attach a task-level IAM role that provides permission to access DynamoDB.
  • C. Create a custom AMI with the Node.js environment and application stack using Chef recipes. Use the AMI in an Auto Scaling group and set up scheduled scaling for the required times, then set up an Amazon EC2 IAM role that provides permission to access DynamoDB.
  • D. Configure AWS OpsWorks stacks and use custom Chef cookbooks. Add the Git repository information where the custom recipes are stored, and add a layer in OpsWorks for the Node.js application server.
    Then configure the custom recipe to deploy the application in the deploy step. Configure time-based instances and attach an Amazon EC2 IAM role that provides permission to access DynamoDB.

Answer: A

 

NEW QUESTION 31
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