DOP-C01

A company wants to set up a continuous delivery pipeline.The company stores application code in a private GitHub repository.The company needs to deploy the application components to Amazon Elastic Container Service (Amazon ECS), Amazon EC2, and AWS Lambda.The pipeline must support manual approval actions.Which solution will meet these requirements?Read More →

A development team is building an ecommerce application and is using Amazon Simple Notification Service (Amazon SNS) to send order messages to multiple endpoints.One of the endpoints is an external HTTP endpoint that is not always available.The development team needs to receive a notification if an order message is not delivered to the HTTP endpoint.What should a DevOps engineer do to meet these requirements?Read More →

An ecommerce company uses a large number of Amazon EBS backed Amazon EC2 instances.To decrease manual work across all the instances, a DevOpsEngineer is tasked with automating restart actions when EC2 instance retirement events are scheduled.How can this be accomplished?Read More →

An n-tier application requires a table in an Amazon RDS MySQL DB instance to be dropped and repopulated at each deployment.This process can take several minutes and the web tier cannot come online until the process is complete.Currently, the web tier is configured in an Amazon EC2 Auto Scaling group, with instances being terminated and replaced at each deployment.The MySQL table is populated by running a SQL query through an AWS CodeBuild job.What should be done to ensure that the web tier does not come online before the database is completely configured?Read More →

A company is building a solution for storing files containing Personally Identifiable Information (PII) on AWS.Requirements state:✑ All data must be encrypted at rest and in transit.✑ All data must be replicated in at least two locations that are at least 500 miles (805 kilometers) apart.Which solution meets these requirements?Read More →

A company needs to implement a robust CI/CD pipeline to automate the deployment of an application in AWS.The pipeline must support continuous integration, continuous delivery, and automatic rollback upon deployment failure.The entire CI/CD pipeline must be capable of being re-provisioned in alternate AWS accounts or Regions within minutes.A DevOps engineer has already created an AWS CodeCommit repository to store the source code.Which combination of actions should be taken when building this pipeline to meet these requirements? (Choose three.)Read More →

A DevOps engineer has implemented a Cl/CD pipeline to deploy an AWS CloudFormation template that provisions a web application.The web application consists of an Application Load Balancer (ALB), a target group, a launch template that uses an Amazon Linux 2 AMI, an Auto Scaling group of Amazon EC2 instances, a security group, and an Amazon RDS for MySOL database.The launch template includes user data that specifies a script to install and start the application.The initial deployment of the application was successful.The DevOps engineer made changes to update the version of the application with the user data.The CI/CD pipeline has deployed a new version of the template.However, the health checks on the ALB are now failing.The health checks have marked all targets as unhealthy.During investigation, the DevOps engineer notices that the CloudFormation stack has a status of UPDATE_COMPLETE.However, when the DevOps engineer connects to one of the EC2 instances and checks /var/log/messages, the DevOps engineer notices that the Apache web server failed to start successfully because of a configuration error.How can the DevOps engineer ensure that the CloudFormation deployment will fail if the user data fails to successfully finish running?Read More →

An application runs on Amazon EC2 instances behind an Application Load Balancer (ALB).A DevOps Engineer is using AWS CodeDeploy to release a new version.The deployment fails during the AllowTraffic lifecycle event, but a cause for the failure is not indicated in the deployment logs.What would cause this?Read More →

A company is using AWS to deploy an application.The development team must automate the deployments.The team has created an AWS CodePipeline pipeline to deploy the application to Amazon EC2 instances using AWS CodeDeploy after it has been built using AWS CodeBuild.The team wants to add automated testing to the pipeline to confirm that the application is healthy before deploying the code to the EC2 instances.The team also requires a manual approval action before the application is deployed, even if the tests are successful.The testing and approval must be accomplished at the lowest costs, using the simplest management solution.Which solution will meet these requirements?Read More →

A development team is using AWS CodeCommit to version control application code and AWS CodePipeline to orchestrate software deployments.The team has decided to use a remote master branch as the trigger for the pipeline to integrate code changes.A developer has pushed code changes to the CodeCommit repository, but noticed that the pipeline had no reaction, even after 10 minutes.Which of the following actions should be taken to troubleshoot this issue?Read More →