Cloud Practice Questions

AWS DevOps Engineer Professional Practice Questions

AWS Certified DevOps Engineer - Professional (DOP-C02) — This aws devops engineer professional practice test works through realistic DOP-C02 scenarios, from blue/green CodeDeploy rollouts to GuardDuty-driven security automation. Each dop-c02 practice question comes with a detailed explanation, so you can see why the right answer works and why the tempting alternatives fall short.

Total Questions

180 minutes

Time Limit

750 / 1000

Passing Score

$300 USD

Registration Fee

Free Sample Questions

Here are 5 free sample questions from our full bank of 570+ AWS DevOps Engineer Professionalpractice questions. Try them out below — click "Show Answer" to reveal the correct response and explanation.

A company uses AWS CodePipeline to deploy a containerized application to Amazon ECS. Leadership wants deployments to shift traffic gradually and roll back automatically if error rates spike, with as little manual babysitting as possible. Which approach best satisfies this requirement?

AConfigure AWS CodeDeploy with an ECS blue/green deployment that uses a linear or canary traffic-shifting configuration, and attach CloudWatch alarms to the deployment group to trigger automatic rollback

BKeep the pipeline's default ECS rolling update and have an engineer watch the CloudWatch dashboard during each release window

CSkip CodePipeline for production releases and run `aws ecs update-service --force-new-deployment` directly from a CodeBuild buildspec

DWrite a Lambda function that polls the ECS service every few minutes and manually adjusts ALB target group weights over several hours

Engineers on a microservices platform running on Amazon EKS keep seeing intermittent latency spikes, but they can't tell which downstream service call is actually responsible. The team wants to pinpoint the slow hop without hand-writing custom timing logic into every service. What should they set up?

ATurn on CloudWatch Container Insights and try to correlate CPU and memory graphs with the timing of customer complaints

BEnable VPC Flow Logs and query them in Amazon Athena to look for slow network paths between subnets

CWrite CloudWatch Logs Insights queries against each service's application logs and manually compute request duration per hop

DInstrument the services with the AWS X-Ray SDK, or use ADOT for auto-instrumentation, and use the resulting X-Ray service map to see exactly which downstream call is adding latency

A company manages dozens of AWS accounts under AWS Organizations and defines infrastructure with AWS CDK. They need a common set of guardrail resources, a CloudTrail trail, an AWS Config recorder, and an SNS topic, deployed into every account and Region, including accounts that don't exist yet. Which approach requires the least ongoing operational effort?

APackage the guardrails into a CDK app and have someone run `cdk deploy` against each new account's credentials whenever it's provisioned

BUse CloudFormation StackSets with service-managed permissions and automatic deployment, targeted at the organization root, so new accounts pick up the stack instance automatically

CWrite a Lambda function triggered by CloudTrail events that detects new EC2 instances and retroactively tags them for compliance

DStore the templates in Amazon S3 and send each new account owner a runbook asking them to deploy the stack themselves

A production Auto Scaling group occasionally launches instances that fail ELB health checks, causing customer-facing errors. The DevOps team wants unhealthy instances automatically pulled aside for forensic review, not terminated outright, and they want the on-call engineer paged immediately, with minimal manual work. Which design meets these requirements?

ALengthen the Auto Scaling group's health check grace period so struggling instances get more time to recover before replacement

BEnable EC2 auto recovery so the instance reboots automatically on the same underlying hardware after a status check failure

CCreate an EventBridge rule that matches unhealthy EC2 state-change and Auto Scaling lifecycle hook events, and trigger a Systems Manager Automation runbook that detaches the instance from the group, applies a quarantine security group and tag, and publishes to an SNS topic

DHave someone check the Auto Scaling console hourly, terminate unhealthy instances by hand, and post a note in the team chat

Security wants publicly exposed Amazon S3 buckets and leaked IAM access keys to be remediated automatically the moment GuardDuty flags them, without a person triaging every alert, and they want findings rolled up into one dashboard for compliance reporting across accounts. What should the DevOps team build?

ACheck the GuardDuty console each morning, fix anything found with the AWS CLI, and copy the results into a spreadsheet for the compliance team

BTurn on AWS Config rules only and let its periodic evaluations flag public buckets for someone to fix in the console

CWrite one Lambda function that polls the GuardDuty API once a day and emails a digest to the security team for manual triage

DEnable AWS Security Hub to aggregate GuardDuty and Config findings across accounts, then configure an EventBridge rule matching specific finding types, such as leaked instance credentials or public S3 access, that triggers a Lambda function to apply the fix automatically, for example deactivating the compromised access key or enabling S3 Block Public Access

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About the AWS DevOps Engineer Professional

Format & Structure

Total Questions: 75
Time Limit: 180 minutes
Format: Multiple choice and multiple response

Scoring & Cost

Passing Score: 750 / 1000
Registration Fee: $300 USD

Frequently Asked Questions

What is the AWS Certified DevOps Engineer - Professional (DOP-C02) certification?

DOP-C02 is AWS's professional-level certification for engineers who build and operate CI/CD pipelines, automate infrastructure, and keep production systems healthy at scale. It leans heavily on scenario questions that combine several services at once, think CodePipeline plus CloudFormation plus monitoring, rather than asking about any one service in isolation. It's generally considered one of the tougher AWS professional certifications because of that breadth.

How hard is the AWS DevOps Professional certification?

It's not an easy one. Most people who attempt DOP-C02 already hold an associate-level AWS certification and have real hands-on time with CI/CD tooling, because the questions expect you to reason through multi-step operational scenarios, not just recall service limits. If your CloudFormation and CodeDeploy experience is thin, budget extra prep time there before you schedule anything.

What are the prerequisites for DOP-C02?

AWS doesn't enforce a hard prerequisite, but it recommends at least two years of hands-on experience provisioning, operating, and managing AWS environments, plus solid experience developing code in at least one language. Most candidates go in with a Developer Associate or SysOps Administrator Associate certification already under their belt, since DOP-C02 builds directly on that operational and coding foundation.

AWS DevOps vs Solutions Architect Professional, what's the difference?

Solutions Architect Professional is about designing systems: choosing the right services, network topology, and cost tradeoffs for a given business requirement. AWS DevOps Engineer Professional is about running those systems day to day, building the CI/CD pipeline that ships changes safely, automating infrastructure with CloudFormation or CDK, and responding when something breaks at 2am. There's overlap, but DevOps Professional digs much deeper into deployment strategies, monitoring, and incident response.

How many questions are on DOP-C02 and how much time do I get?

DOP-C02 has 75 questions and a 180-minute time limit. Some of those questions are unscored and used by AWS to evaluate future content, but you won't know which ones during your session, so treat every question as if it counts. Both multiple-choice and multiple-response formats show up, so read each prompt carefully to see how many answers it's asking for.

What score do I need to pass DOP-C02?

AWS scores DOP-C02 on a scaled range from 100 to 1,000, and 750 is the passing mark. That scaled score isn't a simple percentage of correct answers, so don't try to reverse-engineer exactly how many questions you can miss. Consistent performance across CI/CD, monitoring, IaC, incident response, and security topics is a better readiness signal than any single practice score.

How much does the AWS DevOps Engineer Professional certification cost?

Registration is $300 USD as of 2026, plus applicable local taxes. If you've held another AWS certification, check your AWS Certification account for a retake or upgrade discount before you pay full price. Some employers with AWS Partner status will also reimburse the fee, so it's worth asking before you book.

How should I use an aws devops practice test to prepare?

Treat an aws devops practice test as a way to practice reasoning through scenarios, not a script to memorize. Work through each question, write down why you picked an answer before checking it, and pay close attention to the explanations for the options you didn't pick. Weak spots usually show up fast, whether that's CodeDeploy traffic shifting, EventBridge event patterns, or Config remediation, and that's exactly where your remaining study time should go.

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