DevOps Engineer Professional (Page 36)

An application team has three environments for their application: development, pre-production, and production.The team recently adopted AWS CodePipeline.However, the team has had several deployments of misconfigured or nonfunctional development code into the production environment, resulting in user disruption and downtime.The DevOps engineer must review the pipeline and add steps to identify problems with the application before it is deployed.What should the engineer do to identify functional issues during the deployment process? (Choose two.)Read More →

A DevOps engineer is using AWS CodeDeploy across a fleet of Amazon EC2 Instances in an EC2 Auto Scaling group.The associated CodeDeploy deployment group, which is integrated with EC2 Auto Scaling, is configured to perform in-place deployments with CodeDeplcyDefault.OneAtATime.During an ongoing new deployment, the engineer discovers that although the overall deployment finished successfully, two out of five instances have the previous application revision deployed.The other three instances have the newest application revision.What is likely causing this issue?Read More →

A consulting company was hired to assess security vulnerabilities within a client company’s application and propose a plan to remediate all identified issues.The architecture is identified as follows: Amazon S3 storage for content, an Auto Scaling group of Amazon EC2 instances behind an Elastic Load Balancer with attached Amazon EBS storage, and an Amazon RDS MySQL database.There are also several AWS Lambda functions that communicate directly with the RDS database using connection string statements in the code.The consultants identified the top security threat as follows: the application is not meeting its requirement to have encryption at rest.What solution will address this issue with the LEAST operational overhead and will provide monitoring for potential future violations?Read More →

A DevOps Engineer administers an application that manages video files for a video production company.The application runs on Amazon EC2 instances behind an ELB Application Load Balancer.The instances run in an Auto Scaling group across multiple Availability Zones.Data is stored in an Amazon RDS PostgreSQLMulti-AZ DB instance, and the video files are stored in an Amazon S3 bucket.On a typical day, 50 GB of new video are added to the S3 bucket.The Engineer must implement a multi-region disaster recovery plan with the least data loss and the lowest recovery times.The current application infrastructure is already described using AWS CloudFormation.Which deployment option should the Engineer choose to meet the uptime and recovery objectives for the system?Read More →

A retail company wants to use AWS Elastic Beanstalk to host its online sales website running on Java.Since this will be the production website the CTO has the following requirements for the deployment strategy:• Zero downtime.While the deployment is ongoing the current Amazon EC2 instances in service should remain in service.No deployment or any other action should be performed on the EC2 instances because they serve production traffic.• A new fleet of instances should be provisioned for deploying the new application version.• Once the new application version is deployed successfully in the new fleet of instances, the new instances should be placed in service and the old ones should be removed.• The rollback should be as easy as possible.If the new fleet of instances fails to deploy the new application version, they should be terminated and the current instances should continue serving traffic as normal.• The resources within the environment (EC2 Auto Scaling group, Elastic Load Balancing, Elastic Beanstalk DNS CNAME) should remain the same and no DNS change should be made.Which deployment strategy will meet the requirements?Read More →

A DevOps Engineer must track the health of a stateless RESTful service sitting behind a Classic Load Balancer.The deployment of new application revisions is through a CI/CD pipeline.If the service’s latency increases beyond a defined threshold, deployment should be stopped until the service has recovered.Which of the following methods allow for the QUICKEST detection time?Read More →

A DevOps engineer is deploying a new version of a company’s application in an AWS CodeDeploy deployment group associated with its Amazon EC2 instances.After some time, the deployment fails.The engineer realizes that all the events associated with the specific deployment ID are in a Skipped status, and code was not deployed in the instances associated with the deployment group.What are valid reasons for this failure? (Choose two.)Read More →

A company has many applications.Different teams in the company developed the applications by using multiple languages and frameworks.The applications run on premises and on different servers with different operating systems.Each team has its own release protocol and process.The company wants to reduce the complexity of the release and maintenance of these applications.The company is migrating its technology stacks, including these applications, to AWS.The company wants centralized control of source code, a consistent and automatic delivery pipeline, and as few maintenance tasks as possible on the underlying infrastructure.What should a DevOps engineer do to meet these requirements?Read More →

A company is running an application on Amazon EC2 instances in an Auto Scaling group.Recently, an issue occurred that prevented EC2 instances from launching successfully, and it took several hours for the Support team to discover the issue.The Support team wants to be notified by email whenever an EC2 instance does not start successfully.Which action will accomplish this?Read More →

A healthcare services company is concerned about the growing costs of software licensing for an application for monitoring patient wellness.The company wants to create an audit process to ensure that the application is running exclusively on Amazon EC2 Dedicated Hosts.A DevOps Engineer must create a workflow to audit the application to ensure compliance.What steps should the Engineer take to meet this requirement with the LEAST administrative overhead?Read More →