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AWS Certified DevOps Engineer Professional DOP-C02 Practice Test

1,298 questions with instant explanations, domain breakdown, and wrong-answer analysis. Built for the real exam.

Instant feedback after each answer
Full explanations included
Domain score breakdown
Real exam: 180 min
Pass mark: 750/1000

Sample questions with explanations

This is exactly what you see during practice — question, options, and a full explanation after you answer.

Q1Monitoring and Loggingeasy
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A company uses AWS X-Ray to trace requests through its microservices application. The DevOps engineer notices that some traces are incomplete. What is a possible reason?

AThe X-Ray daemon is not running on the application servers.
BX-Ray cannot trace requests that cross multiple AWS services.
The X-Ray SDK sampling rate is configured too low, causing many requests to be skipped.Correct
DX-Ray requires the CloudWatch agent to be installed on all EC2 instances.

The X-Ray SDK uses a sampling rate to decide which requests to record. If the sampling rate is set too low, a large percentage of requests are skipped, leading to incomplete traces. The DevOps engineer would observe missing segments for requests that were not sampled, even though…Read full explanation

Q2Monitoring and Loggingmedium
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A DevOps engineer is setting up centralized logging for multiple AWS accounts. They need to collect VPC Flow Logs, CloudTrail logs, and application logs into a single Amazon S3 bucket. What is the most efficient approach?

AConfigure a Lambda function in each account to copy logs to a central S3 bucket.
BCreate an S3 bucket in each account and use S3 replication.
CUse Amazon Kinesis Data Firehose to stream logs from all accounts to a central S3 bucket.
Use an S3 bucket in a centralized logging account with a bucket policy that grants write access from all other accounts.Correct

It uses a centralized logging account with a single S3 bucket configured with a bucket policy that grants write access (s3:PutObject) to all other accounts. This approach avoids data duplication, eliminates the need for replication or intermediate compute resources, and is the mo…Read full explanation

Q3Incident and Event Responsemedium
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Match each AWS automation or configuration management tool to its description.

AWS CloudFormation: Infrastructure as Code service using templates to provision AWS resources.Correct
AWS OpsWorks: Configuration management service using Chef and Puppet to automate server configuration.Correct
AWS Elastic Beanstalk: Platform as a Service (PaaS) for deploying and scaling web applications.Correct
AWS CodeDeploy: Automated deployment service for deploying code to any instance.Correct

AWS CloudFormation is for IaC, OpsWorks for configuration management, Elastic Beanstalk for PaaS, and CodeDeploy for automated deployments. Distractors swap definitions.

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Exam-style questions

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