Try 12 AWS Certified DevOps Engineer - Professional (DOP-C02) sample questions and practice-test preview prompts on deployment automation, monitoring, resilience, security controls, CI/CD, and operational troubleshooting.
DOP-C02 is AWS Certified DevOps Engineer - Professional. It validates advanced AWS DevOps judgment across continuous delivery, infrastructure automation, resilient operations, monitoring, event response, and security/compliance automation.
The DOP-C02 page includes original sample questions and exam guidance while full IT Mastery practice is being prioritized. Use it to review the exam snapshot, topic coverage, and related live AWS practice options.
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DOP-C02 questions usually reward the option that makes delivery safer, infrastructure more repeatable, systems more resilient, and operations more observable without weakening security or compliance controls.
| Domain | Weight |
|---|---|
| SDLC Automation | 22% |
| Configuration Management and IaC | 17% |
| Resilient Cloud Solutions | 15% |
| Monitoring and Logging | 15% |
| Incident and Event Response | 14% |
| Security and Compliance | 17% |
Try these 12 original sample questions for AWS DOP-C02. They are designed for self-assessment and are not official exam questions.
What this tests: safe deployment strategy
A team deploys a containerized service to Amazon ECS. The new version should receive a small amount of production traffic first, and deployment should roll back automatically if error alarms breach. Which approach is the best fit?
Best answer: B
Explanation: CodeDeploy blue/green deployments for ECS can shift traffic, monitor alarms, and roll back automatically. DOP-C02 favors controlled deployment and measurable rollback. Replacing all tasks at once, manual cutovers, or disabled health checks increase release risk.
What this tests: infrastructure as code drift
A CloudFormation-managed stack has been manually changed in the console. The DevOps team needs to identify resources whose actual configuration differs from the template. What should they use?
Best answer: D
Explanation: CloudFormation drift detection compares deployed resources with the expected stack template state. Cost Explorer, Inspector, and S3 versioning solve different problems and do not identify infrastructure drift against a CloudFormation template.
What this tests: multi-account deployment consistency
An organization needs to deploy the same baseline IAM roles, Config rules, and logging resources across dozens of AWS accounts and Regions. Which CloudFormation capability is designed for this?
Best answer: A
Explanation: CloudFormation StackSets deploy and manage stacks across multiple accounts and Regions. They are a common DOP-C02 answer for organization-wide baseline infrastructure. Change sets are useful but do not by themselves solve multi-account rollout.
What this tests: event-driven remediation
A security group is modified to allow inbound SSH from 0.0.0.0/0. The team wants near-real-time detection and automated remediation. Which pattern is most appropriate?
Best answer: C
Explanation: DOP-C02 expects event-driven and policy-driven remediation where possible. AWS Config managed/custom rules or EventBridge events can detect noncompliant changes and trigger automation. Manual notification or monthly review is too slow for this control.
What this tests: log centralization
A company must retain application and infrastructure logs from many AWS accounts in a central security account with restricted write-only access from workload accounts. Which design is strongest?
Best answer: B
Explanation: Centralized logging with cross-account permissions, retention, and restricted access supports auditability and incident response. Local-only or ephemeral logs are easy to lose or alter, and disabling logs undermines operational visibility.
What this tests: Auto Scaling recovery
An application runs on EC2 instances behind an Application Load Balancer. Instances sometimes become unhealthy. The team wants failed instances replaced automatically while preserving the desired capacity. What should be configured?
Best answer: D
Explanation: Auto Scaling groups can replace unhealthy instances and maintain desired capacity. When integrated with load balancer health checks, replacement reflects application health, not only EC2 system status. Manual runbooks and static DNS do not provide automatic recovery.
What this tests: deployment approval control
A production pipeline must require human approval after integration tests pass but before production deployment begins. Which AWS service feature is most directly relevant?
Best answer: A
Explanation: CodePipeline supports manual approval actions as controlled gates in a release workflow. That is the direct fit for human approval before production. The other services do not provide pipeline approval control.
What this tests: configuration and patch automation
A fleet of EC2 instances must receive approved operating-system patches on a defined schedule, with compliance reporting. Which service is the best fit?
Best answer: C
Explanation: Systems Manager Patch Manager manages patch baselines, maintenance windows, and compliance reporting for managed instances. CloudFront, Glue, and Macie do not manage instance patching.
What this tests: rollback with CloudFormation
A CloudFormation deployment fails while updating several resources. The team wants the stack to return to the previous known good state automatically. Which behavior supports this?
Best answer: B
Explanation: CloudFormation can roll back failed stack operations to the prior stable state, which protects repeatable infrastructure delivery. Public buckets, disabled events, and ad hoc deletion make recovery less reliable and less auditable.
What this tests: canary monitoring
A team wants to continuously verify that a public API login flow works from the user’s perspective and alert when synthetic requests fail. Which service should they use?
Best answer: A
Explanation: CloudWatch Synthetics canaries run scripted checks against endpoints and user flows, giving early warning when real interactions fail. SCPs, EFS lifecycle policies, and IAM analysis do not perform synthetic application monitoring.
What this tests: secure secret delivery
A deployment pipeline needs to provide a database password to a build step without storing it in source control or plaintext pipeline variables. Which option is most appropriate?
Best answer: D
Explanation: Managed secret storage with least-privilege IAM access avoids hard-coded or exposed credentials. DOP-C02 expects secure automation, not manual or plaintext secret handling. Logs, chat messages, and repositories are poor secret stores.
What this tests: incident response automation
A CloudWatch alarm detects repeated application failures. The operations team wants to gather diagnostics and restart a service on affected managed instances using an approved runbook. Which service should orchestrate the runbook?
Best answer: C
Explanation: Systems Manager Automation can run approved operational runbooks, collect diagnostics, and perform remediation steps on managed resources. It is a better fit than ad hoc manual response when repeatable incident actions are needed. The other services do not orchestrate instance remediation runbooks.
flowchart LR
A["Source change"] --> B["Build and test"]
B --> C["Policy and security gates"]
C --> D["Progressive deployment"]
D --> E["Observe health"]
E --> F["Rollback, remediate, and improve"]
Use this map when a DevOps Engineer scenario asks how to deploy or operate safely. Strong answers combine automation, guardrails, observability, rollback, and post-incident learning instead of relying on manual heroics.
| Topic | Strong answer pattern | Common trap |
|---|---|---|
| CI/CD | Automate build, test, security checks, approvals, and promotion | Treating manual deployment as the safest default |
| Infrastructure as code | Version, review, test, and roll back infrastructure changes | Making console changes that drift from templates |
| Deployment strategy | Use canary, blue/green, rolling, or immutable rollout based on risk | Releasing to all users before observing health |
| Monitoring | Use metrics, logs, traces, alarms, and SLO-style signals | Alerting on every noisy metric instead of user impact |
| Incident response | Mitigate, communicate, preserve evidence, and review causes | Searching for blame before service is stable |
| Automation | Remove toil with tested runbooks and safe permissions | Automating an unsafe manual process without guardrails |
Use this page to review DOP-C02 sample questions and use the Notify me form for updates. The related pages below help you compare adjacent IT Mastery AWS practice options before choosing what to study next.
| If you need to practice… | Best page | Why |
|---|---|---|
| AWS operations and remediation | SOA-C03 | Closest live route for monitoring, operations, backup, remediation, and troubleshooting. |
| AWS architecture trade-offs | SAA-C03 | Useful for resilience, networking, security, and cost-aware design. |
| Terraform workflow | Terraform Associate (004) | Good live route for IaC workflow, state, modules, and provisioning discipline. |