Amazon DOP-C02 Question Answers

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Question # 1

A company has microservices running in AWS Lambda that read data from Amazon DynamoDB. The Lambda code is manually deployed by developers after successful testing The company now needs the tests and deployments be automated and run in the cloud Additionally, traffic to the new versions of each microservice should be incrementally shifted over time after deployment. What solution meets all the requirements, ensuring the MOST developer velocity? 

A. Create an AWS CodePipelme configuration and set up a post-commit hook to trigger thepipeline after tests have passed Use AWS CodeDeploy and create a Canary deploymentconfiguration that specifies the percentage of traffic and interval
B. Create an AWS CodeBuild configuration that triggers when the test code is pushed UseAWS CloudFormation to trigger an AWS CodePipelme configuration that deploys the newLambda versions and specifies the traffic shift percentage and interval
C. Create an AWS CodePipelme configuration and set up the source code step to triggerwhen code is pushed. Set up the build step to use AWS CodeBuild to run the tests Set upan AWS CodeDeploy configuration to deploy, then select theCodeDeployDefault.LambdaLinearlDPercentEvery3Minut.es Option.
D. Use the AWS CLI to set up a post-commit hook that uploads the code to an Amazon S3bucket after tests have passed. Set up an S3 event trigger that runs a Lambda function thatdeploys the new version. Use an interval in the Lambda function to deploy the code overtime at the required percentage

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Question # 2

A company has a fleet of Amazon EC2 instances that run Linux in a single AWS account. The company is using an AWS Systems Manager Automation task across the EC2 instances. During the most recent patch cycle, several EC2 instances went into an error state because of insufficient available disk space. A DevOps engineer needs to ensure that the EC2 instances have sufficient available disk space during the patching process in the future. Which combination of steps will meet these requirements? {Select TWO.) 

A. Ensure that the Amazon CloudWatch agent is installed on all EC2 instances
B. Create a cron job that is installed on each EC2 instance to periodically delete temporary files.
C. Create an Amazon CloudWatch log group for the EC2 instances. Configure a cron jobthat is installed on each EC2 instance to write the available disk space to a CloudWatch logstream for the relevant EC2 instance.
D. Create an Amazon CloudWatch alarm to monitor available disk space on all EC2instances Add the alarm as a safety control to the Systems Manager Automation task.
E. Create an AWS Lambda function to periodically check for sufficient available disk spaceon all EC2 instances by evaluating each EC2 instance's respective Amazon CloudWatchlog stream.

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Question # 3

A company uses Amazon EC2 as its primary compute platform. A DevOps team wants to audit the company's EC2 instances to check whether any prohibited applications have been installed on the EC2 instances. Which solution will meet these requirements with the MOST operational efficiency? 

A. Configure AWS Systems Manager on each instance Use AWS Systems ManagerInventory Use Systems Manager resource data sync to synchronize and store findings inan Amazon S3 bucket Create an AWS Lambda function that runs when new objects areadded to the S3 bucket. Configure the Lambda function to identify prohibited applications.
B. Configure AWS Systems Manager on each instance Use Systems Manager InventoryCreate AWS Config rules that monitor changes from Systems Manager Inventory to identifyprohibited applications.
C. Configure AWS Systems Manager on each instance. Use Systems Manager Inventory.Filter a trail in AWS CloudTrail for Systems Manager Inventory events to identify prohibitedapplications.
D. Designate Amazon CloudWatch Logs as the log destination for all application instancesRun an automated script across all instances to create an inventory of installed applicationsConfigure the script to forward the results to CloudWatch Logs Create a CloudWatch alarmthat uses filter patterns to search log data to identify prohibited applications.

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Question # 4

A company uses an Amazon API Gateway regional REST API to host its application API. The REST API has a custom domain. The REST API's default endpoint is deactivated. The company's internal teams consume the API. The company wants to use mutual TLS between the API and the internal teams as an additional layer of authentication. Which combination of steps will meet these requirements? (Select TWO.) 

A. Use AWS Certificate Manager (ACM) to create a private certificate authority (CA).Provision a client certificate that is signed by the private CA.
B. Provision a client certificate that is signed by a public certificate authority (CA). Importthe certificate into AWS Certificate Manager (ACM).
C. Upload the provisioned client certificate to an Amazon S3 bucket. Configure the APIGateway mutual TLS to use the client certificate that is stored in the S3 bucket as the truststore.
D. Upload the provisioned client certificate private key to an Amazon S3 bucket. Configurethe API Gateway mutual TLS to use the private key that is stored in the S3 bucket as thetrust store.
E. Upload the root private certificate authority (CA) certificate to an Amazon S3 bucket.Configure the API Gateway mutual TLS to use the private CA certificate that is stored in theS3 bucket as the trust store.

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Question # 5

A company has an application that runs on Amazon EC2 instances behind an Application Load Balancer (ALB) The EC2 Instances are in multiple Availability Zones The application was misconfigured in a single Availability Zone, which caused a partial outage of the application. A DevOps engineer made changes to ensure that the unhealthy EC2 instances in one Availability Zone do not affect the healthy EC2 instances in the other Availability Zones. The DevOps engineer needs to test the application's failover and shift where the ALB sends traffic During failover. the ALB must avoid sending traffic to the Availability Zone where the failure has occurred. Which solution will meet these requirements? 

A. Turn off cross-zone load balancing on the ALB Use Amazon Route 53 ApplicationRecovery Controller to start a zonal shift away from the Availability Zone
B. Turn off cross-zone load balancing on the ALB's target group Use Amazon Route 53Application Recovery Controller to start a zonal shift away from the Availability Zone
C. Create an Amazon Route 53 Application Recovery Controller resource set that uses theDNS hostname of the ALB Start a zonal shift for the resource set away from the AvailabilityZone
D. Create an Amazon Route 53 Application Recovery Controller resource set that uses theARN of the ALB's target group Create a readiness check that uses theElbV2TargetGroupsCanServeTraffic rule

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Question # 6

A DevOps engineer needs to implement integration tests into an existing AWS CodePipelme CI/CD workflow for an Amazon Elastic Container Service (Amazon ECS) service. The CI/CD workflow retrieves new application code from an AWS CodeCommit repository and builds a container image. The CI/CD workflow then uploads the container image to Amazon Elastic Container Registry (Amazon ECR) with a new image tag version. The integration tests must ensure that new versions of the service endpoint are reachable and that vanous API methods return successful response data The DevOps engineer has already created an ECS cluster to test the service Which combination of steps will meet these requirements with the LEAST management overhead? (Select THREE. 

A. Add a deploy stage to the pipeline Configure Amazon ECS as the action provider
B. Add a deploy stage to the pipeline Configure AWS CodeDeploy as the action provider
C. Add an appspec.yml file to the CodeCommit repository
D. Update the image build pipeline stage to output an imagedefinitions json file thatreferences the new image tag.
E. Create an AWS Lambda function that runs connectivity checks and API calls against theservice. Integrate the Lambda function with CodePipeline by using aLambda action stage
F. Write a script that runs integration tests against the service. Upload the script to anAmazon S3 bucket. Integrate the script in the S3 bucket with CodePipeline by using an S3action stage.

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Question # 7

A company uses Amazon RDS for all databases in Its AWS accounts The company uses AWS Control Tower to build a landing zone that has an audit and logging account All databases must be encrypted at rest for compliance reasons. The company's security engineer needs to receive notification about any noncompliant databases that are in the company's accounts Which solution will meet these requirements with the MOST operational efficiency? 

A. Use AWS Control Tower to activate the optional detective control (guardrail) todetermine whether the RDS storage is encrypted Create an Amazon Simple NotificationService (Amazon SNS) topic in the company's audit account. Create an AmazonEventBridge rule to filter noncompliant events from the AWS Control Tower control(guardrail) to notify the SNS topic. Subscribe the security engineer's email address to theSNS topic
B. Use AWS Cloud Formation StackSets to deploy AWS Lambda functions to everyaccount. Write the Lambda function code to determine whether the RDS storage isencrypted in the account the function is deployed to Send the findings as an AmazonCloudWatch metric to the management account Create an Amazon Simple NotificationService (Amazon SNS) topic. Create a CloudWatch alarm that notifies the SNS topic whenmetric thresholds are met. Subscribe the security engineer's email address to the SNStopic.
C. Create a custom AWS Config rule in every account to determine whether the RDSstorage is encrypted Create an Amazon Simple Notification Service (Amazon SNS) topic inthe audit account Create an Amazon EventBridge rule to filter noncompliant events fromthe AWS Control Tower control (guardrail) to notify the SNS topic. Subscribe the securityengineer's email address to the SNS topic
D. Launch an Amazon EC2 instance. Run an hourly cron job by using the AWS CLI todetermine whether the RDS storage is encrypted in each AWS account Store the results inan RDS database. Notify the security engineer by sending email messages from the EC2instance when noncompliance is detected

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Question # 8

A company is migrating from its on-premises data center to AWS. The company currently uses a custom on-premises CI/CD pipeline solution to build and package software. The company wants its software packages and dependent public repositories to be available in AWS CodeArtifact to facilitate the creation of application-specific pipelines. Which combination of steps should the company take to update the CI/CD pipeline solution and to configure CodeArtifact with the LEAST operational overhead? (Select TWO.) 

A. Update the CI/CD pipeline to create a VM image that contains newly packaged softwareUse AWS Import/Export to make the VM image available as anAmazon EC2 AMI. Launch the AMI with an attached 1AM instance profile that allowsCodeArtifact actions. Use AWS CLI commands to publish the packages to a CodeArtifactrepository.
B. Create an AWS Identity and Access Management Roles Anywhere trust anchor Createan 1AM role that allows CodeArtifact actions and that has a trust relationship on the trustanchor. Update the on-premises CI/CD pipeline to assume the new 1AM role and topublish the packages to CodeArtifact.
C. Create a new Amazon S3 bucket. Generate a presigned URL that allows the PutObjectrequest. Update the on-premises CI/CD pipeline to use thepresigned URL to publish the packages from the on-premises location to the S3 bucket.Create an AWS Lambda function that runs when packages are created in the bucketthrough a put command Configure the Lambda function to publish the packages toCodeArtifact
D. For each public repository, create a CodeArtifact repository that is configured with anexternal connection Configure the dependent repositories as upstream public repositories.
E. Create a CodeArtifact repository that is configured with a set of external connections tothe public repositories. Configure the external connections to be downstream of therepository

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Question # 9

A company is running a custom-built application that processes records. All the components run on Amazon EC2 instances that run in an Auto Scaling group. Each record's processing is a multistep sequential action that is compute-intensive. Each step is always completed in 5 minutes or less. A limitation of the current system is that if any steps fail, the application has to reprocess the record from the beginning The company wants to update the architecture so that the application must reprocess only the failed steps. What is the MOST operationally efficient solution that meets these requirements? 

A. Create a web application to write records to Amazon S3 Use S3 Event Notifications topublish to an Amazon Simple Notification Service (Amazon SNS) topic Use an EC2instance to poll Amazon SNS and start processing Save intermediate results to Amazon S3to pass on to the next step
B. Perform the processing steps by using logic in the application. Convert the applicationcode to run in a container. Use AWS Fargate to manage the container Instances. Configurethe container to invoke itself to pass the state from one step to the next.
C. Create a web application to pass records to an Amazon Kinesis data stream. Decouplethe processing by using the Kinesis data stream and AWS Lambda functions.
D. Create a web application to pass records to AWS Step Functions. Decouple theprocessing into Step Functions tasks and AWS Lambda functions.

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Question # 10

A company is developing an application that will generate log events. The log events consist of five distinct metrics every one tenth of a second and produce a large amount of data The company needs to configure the application to write the logs to Amazon Time stream The company will configure a daily query against the Timestream table. Which combination of steps will meet these requirements with the FASTEST query performance? (Select THREE.) 

A. Use batch writes to write multiple log events in a Single write operation
B. Write each log event as a single write operation
C. Treat each log as a single-measure record
D. Treat each log as a multi-measure record
E. Configure the memory store retention period to be longer than the magnetic storeretention period
F. Configure the memory store retention period to be shorter than the magnetic storeretention period

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