- A
Use AWS CloudTrail to monitor PutBucketPolicy events and send alerts to the security team via Amazon SNS.
Why wrong: Monitoring alone does not remediate drift; it only notifies.
- B
Create an AWS Config rule to check if the bucket policy matches the desired policy, and use an AWS Lambda function to automatically correct any noncompliant buckets.
Why wrong: Config rules can evaluate, but automatic remediation requires additional setup and is not native to Config.
- C
Configure S3 event notifications to invoke an AWS Lambda function whenever the bucket policy is modified.
Why wrong: S3 event notifications are for object events, not bucket policy changes.
- D
Enable drift detection on the CloudFormation stack and use Amazon EventBridge to trigger an AWS Lambda function that restores the original bucket policy when drift is detected.
Drift detection identifies changes; EventBridge can trigger Lambda to remediate by updating the stack or resource.
Quick Answer
The answer is to enable drift detection on the CloudFormation stack and use Amazon EventBridge to trigger an AWS Lambda function that restores the original bucket policy when drift is detected. This combination is correct because CloudFormation drift detection identifies manual changes to resources like an S3 bucket policy, while EventBridge captures the drift detection results as events and invokes a Lambda function that calls the UpdateStack API to revert the resource to its template-defined state. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this scenario tests your understanding of automated remediation patterns using event-driven architecture, a key DevOps principle for maintaining infrastructure-as-code integrity. A common trap is selecting a solution that only detects drift without automating the fix, or one that uses AWS Config rules for remediation, which is better suited for non-CloudFormation resources. Remember the chain: Drift detect triggers EventBridge, which triggers Lambda, which calls UpdateStack — think "D-E-L-U" for Detect, Event, Lambda, Update.
DOP-C02 Configuration Management and IaC Practice Question
This DOP-C02 practice question tests your understanding of configuration management and iac. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An organization uses AWS CloudFormation to manage infrastructure. They have a stack that creates an Amazon S3 bucket with a bucket policy that restricts access to a specific IAM role. During a recent security audit, it was discovered that the bucket policy was modified manually via the AWS Management Console, and the change was not reflected in the CloudFormation template. The security team wants to detect and remediate such drift automatically. Which combination of steps should be taken to achieve this?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Enable drift detection on the CloudFormation stack and use Amazon EventBridge to trigger an AWS Lambda function that restores the original bucket policy when drift is detected.
Option D is correct because it directly addresses the requirement to both detect and automatically remediate drift in a CloudFormation-managed S3 bucket policy. CloudFormation drift detection identifies manual changes to the bucket policy, and Amazon EventBridge can trigger an AWS Lambda function that uses the CloudFormation UpdateStack API to restore the original policy from the template, ensuring the infrastructure remains in sync with the IaC definition.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use AWS CloudTrail to monitor PutBucketPolicy events and send alerts to the security team via Amazon SNS.
Why it's wrong here
Monitoring alone does not remediate drift; it only notifies.
- ✗
Create an AWS Config rule to check if the bucket policy matches the desired policy, and use an AWS Lambda function to automatically correct any noncompliant buckets.
Why it's wrong here
Config rules can evaluate, but automatic remediation requires additional setup and is not native to Config.
- ✗
Configure S3 event notifications to invoke an AWS Lambda function whenever the bucket policy is modified.
Why it's wrong here
S3 event notifications are for object events, not bucket policy changes.
- ✓
Enable drift detection on the CloudFormation stack and use Amazon EventBridge to trigger an AWS Lambda function that restores the original bucket policy when drift is detected.
Why this is correct
Drift detection identifies changes; EventBridge can trigger Lambda to remediate by updating the stack or resource.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse S3 event notifications (which are for object-level events) with control plane operations like PutBucketPolicy, leading them to choose Option C, or they assume AWS Config alone can remediate drift without understanding that Config does not automatically correct CloudFormation stack resources.
Detailed technical explanation
How to think about this question
CloudFormation drift detection compares the current properties of a resource (e.g., the S3 bucket policy) against the properties defined in the stack template. When drift is detected, EventBridge can capture the 'AWS::CloudFormation::StackDriftDetectionCompleted' event and invoke a Lambda function that calls the UpdateStack API with the original template, effectively rolling back the manual change. This approach ensures that the stack's desired state is enforced without requiring custom code to parse or compare policy documents.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Configuration Management and IaC — study guide chapter
Learn the concepts, then practise the questions
- →
Configuration Management and IaC practice questions
Targeted practice on this topic area only
- →
All DOP-C02 questions
1,740 questions across all exam domains
- →
AWS Certified DevOps Engineer Professional DOP-C02 study guide
Full concept coverage aligned to exam objectives
- →
DOP-C02 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related DOP-C02 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Configuration Management and IaC practice questions
Practise DOP-C02 questions linked to Configuration Management and IaC.
Resilient Cloud Solutions practice questions
Practise DOP-C02 questions linked to Resilient Cloud Solutions.
Monitoring and Logging practice questions
Practise DOP-C02 questions linked to Monitoring and Logging.
Incident and Event Response practice questions
Practise DOP-C02 questions linked to Incident and Event Response.
Security and Compliance practice questions
Practise DOP-C02 questions linked to Security and Compliance.
SDLC Automation practice questions
Practise DOP-C02 questions linked to SDLC Automation.
DOP-C02 fundamentals practice questions
Practise DOP-C02 questions linked to DOP-C02 fundamentals.
DOP-C02 scenario practice questions
Practise DOP-C02 questions linked to DOP-C02 scenario.
DOP-C02 troubleshooting practice questions
Practise DOP-C02 questions linked to DOP-C02 troubleshooting.
Practice this exam
Start a free DOP-C02 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this DOP-C02 question test?
Configuration Management and IaC — This question tests Configuration Management and IaC — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable drift detection on the CloudFormation stack and use Amazon EventBridge to trigger an AWS Lambda function that restores the original bucket policy when drift is detected. — Option D is correct because it directly addresses the requirement to both detect and automatically remediate drift in a CloudFormation-managed S3 bucket policy. CloudFormation drift detection identifies manual changes to the bucket policy, and Amazon EventBridge can trigger an AWS Lambda function that uses the CloudFormation UpdateStack API to restore the original policy from the template, ensuring the infrastructure remains in sync with the IaC definition.
What should I do if I get this DOP-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Keep practising
More DOP-C02 practice questions
- A company uses AWS CodePipeline with a multi-branch strategy. A new feature branch triggers a pipeline that runs unit te…
- A development team uses AWS CodeBuild to compile a Java application and run unit tests. The build takes 30 minutes, but…
- A company uses AWS CodePipeline with multiple stages: Source (Amazon S3), Build (AWS CodeBuild), and Deploy (AWS CodeDep…
- A company uses AWS CodeCommit for source control. Developers frequently push large binary files (e.g., compiled JARs) to…
- An organization uses AWS CodePipeline to orchestrate deployments to multiple environments (dev, test, prod). Each enviro…
- A company uses AWS Key Management Service (KMS) to encrypt data at rest in Amazon S3. The security team wants to ensure…
Last reviewed: Jun 24, 2026
This DOP-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DOP-C02 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.