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Free AWS DevOps Engineer Professional Exam Braindumps
AWS DevOps Engineer - Professional (DOP-C02) Questions 41–45 (page: 10)

Updated On: 10-Feb-2026
Page 10 of 43
PDF with 429 Questions

A company has built a web service that runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The company has deployed the application in us-east-1. Amazon Route 53 provides an external DNS that routes tra c from example.com to the application, created with appropriate health checks.
The company has deployed a second environment for the application in eu-west-1. The company wants tra c to be routed to whichever environment results in the best response time for each user. If there is an outage in one Region, tra c should be directed to the other environment.
Which con guration will achieve these requirements?

  1. A subdomain us.example.com with weighted routing: the US ALB with weight 2 and the EU ALB with weight 1.
    Another subdomain eu.example.com with weighted routing: the EU ALB with weight 2 and the US ALB with weight 1.
    Geolocation routing records for example.com: North America aliased to us.example.com and Europe aliased to eu.example.com.
  2. A subdomain us.example.com with latency-based routing: the US ALB as the rst target and the EU ALB as the second target.
    Another subdomain eu.example.com with latency-based routing: the EU ALB as the rst target and the US ALB as the second target.
    Failover routing records for example.com aliased to us.example.com as the rst target and eu.example.com as the second target.
  3. A subdomain us.example.com with failover routing: the US ALB as primary and the EU ALB as secondary.
    Another subdomain eu.example.com with failover routing: the EU ALB as primary and the US ALB as secondary.
    Latency-based routing records for example.com that are aliased to us.example.com and eu.example.com.
  4. A subdomain us.example.com with multivalue answer routing: the US ALB rst and the EU ALB second.
    Another subdomain eu.example.com with multivalue answer routing: the EU ALB rst and the US ALB second.
    Failover routing records for example.com that are aliased to us.example.com and eu.example.com.

Answer(s): C



A company has multiple development teams sharing one AWS account. The development team's manager wants to be able to automatically stop Amazon EC2 instances and receive noti cations if resources are idle and not tagged as production resources.
Which solution will meet these requirements?

  1. Use a scheduled Amazon CloudWatch Events rule to lter for Amazon EC2 instance status checks and identify idle EC2 instances. Use the CloudWatch Events rule to target an AWS Lambda function to stop non-production instances and send noti cations.
  2. Use a scheduled Amazon CloudWatch Events rule to lter AWS Systems Manager events and identify idle EC2 instances and resources. Use the CloudWatch Events rule to target an AWS Lambda function to stop non-production instances and send noti cations.
  3. Use a scheduled Amazon CloudWatch Events rule to target a custom AWS Lambda function that runs AWS Trusted Advisor checks. Create a second CloudWatch Events rule to lter events from Trusted Advisor to trigger a Lambda function to stop idle non-production instances and send noti cations.
  4. Use a scheduled Amazon CloudWatch Events rule to target Amazon Inspector events for idle EC2 instances. Use the CloudWatch Events rule to target the AWS Lambda function to stop non-production instances and send noti cations.

Answer(s): C



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 con gured 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 con gured?

  1. Use Amazon Aurora as a drop-in replacement for RDS MySQL. Use snapshots to populate the table with the correct data.
  2. Modify the launch con guration of the Auto Scaling group to pause user data execution for 600 seconds, allowing the table to be populated.
  3. Use AWS Step Functions to monitor and maintain the state of data population. Mark the database in service before continuing with the deployment.
  4. Use an EC2 Auto Scaling lifecycle hook to pause the con guration of the web tier until the table is populated.

Answer(s): D



A highly regulated company has a policy that DevOps Engineers should not log in to their Amazon EC2 instances except in emergencies. If a DevOps Engineer does log in, the Security team must be noti ed within 15 minutes of the occurrence.
Which solution will meet these requirements?

  1. Install the Amazon Inspector agent on each EC2 instance. Subscribe to Amazon CloudWatch Events noti cations. Trigger an AWS Lambda function to check if a message is about user logins. If it is, send a noti cation to the Security team using Amazon SNS.
  2. Install the Amazon CloudWatch agent on each EC2 instance. Con gure the agent to push all logs to Amazon CloudWatch Logs and set up a CloudWatch metric lter that searches for user logins. If a login is found, send a noti cation to the Security team using Amazon SNS.
  3. Set up AWS CloudTrail with Amazon CloudWatch Logs. Subscribe CloudWatch Logs to Amazon Kinesis. Attach AWS Lambda to Kinesis to parse and determine if a log contains a user login. If it does, send a noti cation to the Security team using Amazon SNS.
  4. Set up a script on each Amazon EC2 instance to push all logs to Amazon S3. Set up an S3 event to trigger an AWS Lambda function, which triggers an Amazon Athena query to run. The Athena query checks for logins and sends the output to the Security team using Amazon SNS.

Answer(s): B



A DevOps engineer has automated a web service deployment by using AWS CodePipeline with the following steps:
1. An AWS CodeBuild project compiles the deployment artifact and runs unit tests.
2. An AWS CodeDeploy deployment group deploys the web service to Amazon EC2 instances in the staging environment.
3. A CodeDeploy deployment group deploys the web service to EC2 instances in the production environment. The quality assurance (QA) team requests permission to inspect the build artifact before the deployment to the production environment occurs. The QA team wants to run an internal penetration testing tool to conduct manual tests. The tool will be invoked by a REST API call. Which combination of actions should the DevOps engineer take to ful ll this request? (Choose two.)

  1. Insert a manual approval action between the test actions and deployment actions of the pipeline.
  2. Modify the buildspec.yml le for the compilation stage to require manual approval before completion.
  3. Update the CodeDeploy deployment groups so that they require manual approval to proceed.
  4. Update the pipeline to directly call the REST API for the penetration testing tool.
  5. Update the pipeline to invoke a Lambda function that calls the REST API for the penetration testing tool.

Answer(s): A,E


Reference:

https://docs.aws.amazon.com/codebuild/latest/userguide/sample-codedeploy.html



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