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Amazon AWS Certified DevOps Engineer - Professional DOP-C02 DOP-C02 Dumps in PDF

Free Amazon DOP-C02 Real Questions (page: 6)

DOP-C02 PDF — 465 Questions

A DevOps engineer is building a multistage pipeline with AWS CodePipeline to build, verify, stage, test, and deploy an application. A manual approval stage is required between the test stage and the deploy stage. The development team uses a custom chat tool with webhook support that requires near-real-time notifications.

How should the DevOps engineer configure status updates for pipeline activity and approval requests to post to the chat tool?

  1. Create an Amazon CloudWatch Logs subscription that filters on CodePipeline Pipeline Execution State Change. Publish subscription events to an Amazon Simple Notification Service (Amazon SNS) topic.
    Subscribe the chat webhook URL to the SNS topic, and complete the subscription validation.
  2. Create an AWS Lambda function that is invoked by AWS CloudTrail events. When a CodePipeline Pipeline Execution State Change event is detected, send the event details to the chat webhook URL.
  3. Create an Amazon EventBridge rule that filters on CodePipeline Pipeline Execution State Change. Publish the events to an Amazon Simple Notification Service (Amazon SNS) topic. Create an AWS Lambda function that sends event details to the chat webhook URL. Subscribe the function to the SNS topic.
  4. Modify the pipeline code to send the event details to the chat webhook URL at the end of each stage.
    Parameterize the URL so that each pipeline can send to a different URL based on the pipeline environment.

Answer(s): C



A company's application development team uses Linux-based Amazon EC2 instances as bastion hosts. Inbound SSH access to the bastion hosts is restricted to specific IP addresses, as defined in the associated security groups. The company's security team wants to receive a notification if the security group rules are modified to allow SSH access from any IP address.

What should a DevOps engineer do to meet this requirement?

  1. Create an Amazon EventBridge rule with a source of aws.cloudtrail and the event name AuthorizeSecurityGroupIngress. Define an Amazon Simple Notification Service (Amazon SNS) topic as the target.
  2. Enable Amazon GuardDuty and check the findings for security groups in AWS Security Hub. Configure an Amazon EventBridge rule with a custom pattern that matches GuardDuty events with an output of NON_COMPLIANT. Define an Amazon Simple Notification Service (Amazon SNS) topic as the target.
  3. Create an AWS Config rule by using the restricted-ssh managed rule to check whether security groups disallow unrestricted incoming SSH traffic. Configure automatic remediation to publish a message to an Amazon Simple Notification Service (Amazon SNS) topic.
  4. Enable Amazon Inspector. Include the Common Vulnerabilities and Exposures-1.1 rules package to check the security groups that are associated with the bastion hosts. Configure Amazon Inspector to publish a message to an Amazon Simple Notification Service (Amazon SNS) topic.

Answer(s): C



A DevOps team manages an API running on-premises that serves as a backend for an Amazon API Gateway endpoint. Customers have been complaining about high response latencies, which the development team has verified using the API Gateway latency metrics in Amazon CloudWatch. To identify the cause, the team needs to collect relevant data without introducing additional latency.

Which actions should be taken to accomplish this? (Choose two.)

  1. Install the CloudWatch agent server side and configure the agent to upload relevant logs to CloudWatch.
  2. Enable AWS X-Ray tracing in API Gateway, modify the application to capture request segments, and upload those segments to X-Ray during each request.
  3. Enable AWS X-Ray tracing in API Gateway, modify the application to capture request segments, and use the X-Ray daemon to upload segments to X-Ray.
  4. Modify the on-premises application to send log information back to API Gateway with each request.
  5. Modify the on-premises application to calculate and upload statistical data relevant to the API service requests to CloudWatch metrics.

Answer(s): A,C



A company has an application that is using a MySQL-compatible Amazon Aurora Multi-AZ DB cluster as the database. A cross-Region read replica has been created for disaster recovery purposes. A DevOps engineer wants to automate the promotion of the replica so it becomes the primary database instance in the event of a failure.

Which solution will accomplish this?

  1. Configure a latency-based Amazon Route 53 CNAME with health checks so it points to both the primary and replica endpoints. Subscribe an Amazon SNS topic to Amazon RDS failure notifications from AWS CloudTrail and use that topic to invoke an AWS Lambda function that will promote the replica instance as the primary.
  2. Create an Aurora custom endpoint to point to the primary database instance. Configure the application to use this endpoint. Configure AWS CloudTrail to run an AWS Lambda function to promote the replica instance and modify the custom endpoint to point to the newly promoted instance.
  3. Create an AWS Lambda function to modify the application's AWS CloudFormation template to promote the replica, apply the template to update the stack, and point the application to the newly promoted instance.
    Create an Amazon CloudWatch alarm to invoke this Lambda function after the failure event occurs.
  4. Store the Aurora endpoint in AWS Systems Manager Parameter Store. Create an Amazon EventBridge event that detects the database failure and runs an AWS Lambda function to promote the replica instance and update the endpoint URL stored in AWS Systems Manager Parameter Store. Code the application to reload the endpoint from Parameter Store if a database connection fails.

Answer(s): D



A company hosts its staging website using an Amazon EC2 instance backed with Amazon EBS storage. The company wants to recover quickly with minimal data losses in the event of network connectivity issues or power failures on the EC2 instance.

Which solution will meet these requirements?

  1. Add the instance to an EC2 Auto Scaling group with the minimum, maximum, and desired capacity set to 1.
  2. Add the instance to an EC2 Auto Scaling group with a lifecycle hook to detach the EBS volume when the EC2 instance shuts down or terminates.
  3. Create an Amazon CloudWatch alarm for the StatusCheckFailed_System metric and select the EC2 action to recover the instance.
  4. Create an Amazon CloudWatch alarm for the StatusCheckFailed_Instance metric and select the EC2 action to reboot the instance.

Answer(s): C



A company wants to use AWS development tools to replace its current bash deployment scripts. The company currently deploys a LAMP application to a group of Amazon EC2 instances behind an Application Load Balancer (ALB). During the deployments, the company unit tests the committed application, stops and starts services, unregisters and re-registers instances with the load balancer, and updates file permissions. The company wants to maintain the same deployment functionality through the shift to using AWS services.

Which solution will meet these requirements?

  1. Use AWS CodeBuild to test the application. Use bash scripts invoked by AWS CodeDeploy's appspec.yml
    file to restart services, and deregister and register instances with the ALB. Use the appspec.yml file to update file permissions without a custom script.
  2. Use AWS CodePipeline to move the application from the AWS CodeCommit repository to AWS CodeDeploy. Use CodeDeploy's deployment group to test the application, unregister and re-register instances with the AL and restart services. Use the appspec.yml file to update file permissions without a custom script.
  3. Use AWS CodePipeline to move the application source code from the AWS CodeCommit repository to AWS CodeDeploy. Use CodeDeploy to test the application. Use CodeDeploy's appspec.yml file to restart services and update permissions without a custom script. Use AWS CodeBuild to unregister and re-register instances with the ALB.
  4. Use AWS CodePipeline to trigger AWS CodeBuild to test the application. Use bash scripts invoked by AWS CodeDeploy's appspec.yml file to restart services. Unregister and re-register the instances in the AWS CodeDeploy deployment group with the ALB. Update the appspec.yml file to update file permissions without a custom script.

Answer(s): D



A company runs an application with an Amazon EC2 and on-premises configuration. A DevOps engineer needs to standardize patching across both environments. Company policy dictates that patching only happens during non-business hours.

Which combination of actions will meet these requirements? (Choose three.)

  1. Add the physical machines into AWS Systems Manager using Systems Manager Hybrid Activations.
  2. Attach an IAM role to the EC2 instances, allowing them to be managed by AWS Systems Manager.
  3. Create IAM access keys for the on-premises machines to interact with AWS Systems Manager.
  4. Run an AWS Systems Manager Automation document to patch the systems every hour
  5. Use Amazon EventBridge scheduled events to schedule a patch window.
  6. Use AWS Systems Manager Maintenance Windows to schedule a patch window.

Answer(s): A,B,F



A company has chosen AWS to host a new application. The company needs to implement a multi-account strategy. A DevOps engineer creates a new AWS account and an organization in AWS Organizations. The DevOps engineer also creates the OU structure for the organization and sets up a landing zone by using AWS Control Tower.

The DevOps engineer must implement a solution that automatically deploys resources for new accounts that users create through AWS Control Tower Account Factory. When a user creates a new account, the solution must apply AWS CloudFormation templates and SCPs that are customized for the OU or the account to automatically deploy all the resources that are attached to the account. All the OUs are enrolled in AWS Control Tower.

Which solution will meet these requirements in the MOST automated way?

  1. Use AWS Service Catalog with AWS Control Tower. Create portfolios and products in AWS Service Catalog. Grant granular permissions to provision these resources. Deploy SCPs by using the AWS CLI and JSON documents.
  2. Deploy CloudFormation stack sets by using the required templates. Enable automatic deployment. Deploy
    stack instances to the required accounts. Deploy a CloudFormation stack set to the organization's management account to deploy SCPs.
  3. Create an Amazon EventBridge rule to detect the CreateManagedAccount event. Configure AWS Service Catalog as the target to deploy resources to any new accounts. Deploy SCPs by using the AWS CLI and JSON documents.
  4. Deploy the Customizations for AWS Control Tower (CfCT) solution. Use an AWS CodeCommit repository as the source. In the repository, create a custom package that includes the CloudFormation templates and the SCP JSON documents.

Answer(s): D



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AI Tutor Explanation
8/8/2026 5:49:22 AM

Question 1:
Correct answer: A
The Lambda function should:

  1. Write a structured log entry to CloudWatch Logs containing:
- API operation - Response code - Application version extracted from the User-Agent header
  1. Configure a CloudWatch Logs metric filter to match those log entries and publish a metric.

  1. Use response code and application version as metric dimensions. This lets the company view metrics separately for each application version and response code, such as:
- GetUser / 200 / v2 - GetUser / 500 / v3
Why the other options are incorrect:
  • B: CloudWatch Logs Insights is for querying and analyzing logs; it does not directly populate CloudWatch metrics this way.
  • C: ALB access logs do not automatically contain custom Lambda response metadata in the required form.
  • D: X-Ray Insights is intended for tracing and anomaly analysis, not extracting arbitrary business metrics with these dimensions.

The key concept is using structured application logs plus CloudWatch Logs metric filters to turn log fields into CloudWatch metrics.

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