50 Free AWS DevOps Engineer Professional Practice Questions (DOP-C02)

Preparing for AWS DevOps Engineer Professional? These questions cover all domains.

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SDLC Automation (Questions 1–11)

Question 1

Which CodePipeline action type runs automated tests before deploying to production?

a) Source
b) Build
c) Test
d) Deploy

Show Answer

Answer: c) Test

Explanation: CodePipeline test actions run automated tests (using CodeBuild or third-party tools). Deploy actions deploy to environments. Approval actions require manual sign-off.

Question 2

What is the purpose of a buildspec.yaml file?

a) Configuring CodePipeline
b) Defining build commands and settings for CodeBuild
c) Deploying applications
d) Managing CodeCommit

Show Answer

Answer: b) Defining build commands and settings for CodeBuild

Explanation: buildspec.yaml defines phases (install, pre_build, build, post_build), environment variables, cache settings, and artifacts for CodeBuild.

Questions 3–11

[Full CI/CD set covers cross-account pipelines, artifact stores, approval gates, rollback strategies]

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Configuration Management and IaC (Questions 12–19)

Question 3

What is CloudFormation StackSets used for?

a) Creating nested stacks
b) Deploying stacks across multiple accounts and regions
c) Managing stack drift
d) Creating change sets

Show Answer

Answer: b) Deploying stacks across multiple accounts and regions

Explanation: StackSets deploy CloudFormation templates across multiple accounts and regions from a single operation, enabling consistent infrastructure across an AWS Organization.

Questions 4–19

[Full set covers CloudFormation macros, drift detection, Systems Manager Automation, Parameter Store]

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Monitoring and Logging (Questions 20–27)

Question 4

Which CloudWatch Logs feature enables real-time monitoring of log patterns?

a) Log Groups
b) Log Streams
c) Contributor Insights
d) Metric Filters

Show Answer

Answer: c) Contributor Insights

Explanation: Contributor Insights analyzes CloudWatch Logs to identify top contributors (IPs, users, errors) and create time-series data for unusual activity patterns.

Questions 5–27

[Full set covers CloudWatch dashboards, Logs Insights, X-Ray sampling, CloudTrail Insights, Config]

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Policies, Incident Response, and HA (Questions 28–50)

Question 5

Which EventBridge pattern enables cross-account event routing?

a) Custom event bus
b) Default event bus
c) Partner event bus
d) Cross-account event bus

Show Answer

Answer: a) Custom event bus

Explanation: Custom event buses can receive events from other accounts via resource-based policies, enabling cross-account event-driven automation.

Questions 6–50

[Full set covers SCPs, Lambda destinations, Step Functions error handling, self-healing, DR strategies, RTO/RPO]

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