The answer is to store the credentials in AWS Secrets Manager and configure automatic credential rotation, granting the ECS task IAM role permission to retrieve the secret. This is correct because AWS Secrets Manager natively supports scheduled rotation of database secrets, automatically updating the credentials in both the service and the database without custom code. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this question tests your ability to distinguish between services that manage secrets versus those that only store them; a common trap is choosing AWS Systems Manager Parameter Store, which lacks built-in rotation capabilities. Remember that Secrets Manager is the only AWS service that handles both secure storage and automatic rotation of credentials out of the box. For a quick memory tip: think "Secrets Manager rotates, Parameter Store just stores."
DOP-C02 Security and Compliance Practice Question
This DOP-C02 practice question tests your understanding of security and compliance. 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.
A DevOps engineer needs to securely store and automatically rotate database credentials for a web application running on Amazon ECS. Which solution should be used?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Store the credentials in AWS Secrets Manager and configure rotation. Grant the ECS task IAM role permission to retrieve the secret.
AWS Secrets Manager can store database credentials and automatically rotate them on a schedule. The ECS task can retrieve the credentials using the Secrets Manager secret. Option A is correct. Option B (SSM Parameter Store) can store secrets but does not support automatic rotation. Option C (AWS KMS) is for encryption keys, not credential rotation. Option D (AWS Certificate Manager) is for SSL/TLS certificates.
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 KMS to generate and rotate a data key for encrypting the credentials in a file on ECS.
Why it's wrong here
KMS does not manage credential rotation.
✗
Store the credentials in AWS Systems Manager Parameter Store as a SecureString. Use a Lambda function to rotate them.
Why it's wrong here
Parameter Store does not natively support rotation; a custom Lambda would be needed.
✓
Store the credentials in AWS Secrets Manager and configure rotation. Grant the ECS task IAM role permission to retrieve the secret.
Why this is correct
Secrets Manager supports automatic rotation and ECS can retrieve secrets.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use AWS Certificate Manager to store the credentials as a certificate.
Why it's wrong here
ACM is for certificates, not database credentials.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Identify which DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Security and Compliance — This question tests Security and Compliance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Store the credentials in AWS Secrets Manager and configure rotation. Grant the ECS task IAM role permission to retrieve the secret. — AWS Secrets Manager can store database credentials and automatically rotate them on a schedule. The ECS task can retrieve the credentials using the Secrets Manager secret. Option A is correct. Option B (SSM Parameter Store) can store secrets but does not support automatic rotation. Option C (AWS KMS) is for encryption keys, not credential rotation. Option D (AWS Certificate Manager) is for SSL/TLS certificates.
What should I do if I get this DOP-C02 question wrong?
Identify which DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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 →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which TWO AWS services can be used to manage and rotate database credentials automatically? (Select TWO.)
easy
✓ A.AWS Systems Manager Parameter Store
✓ B.AWS Secrets Manager
C.AWS CloudFormation
D.AWS KMS
E.AWS IAM
Why A: Option A is correct because AWS Secrets Manager provides automatic rotation for supported databases. Option D is correct because AWS Systems Manager Parameter Store (SecureString) can store secrets, but rotation requires custom Lambda. However, Secrets Manager is the primary service for automatic rotation. Option B is wrong because KMS does not rotate secrets. Option C is wrong because IAM does not store database credentials. Option E is wrong because CloudFormation does not manage credential rotation.
Variation 2. A DevOps engineer needs to securely store and automatically rotate database credentials for a MySQL RDS instance. The credentials should be accessible to a Lambda function without hardcoding them. Which AWS service should be used?
easy
A.AWS Systems Manager Parameter Store
✓ B.AWS Secrets Manager
C.AWS Key Management Service (KMS)
D.IAM roles for EC2
Why B: AWS Secrets Manager provides the ability to store secrets and automatically rotate them for RDS databases. It also integrates with Lambda via the Secrets Manager API to retrieve secrets at runtime. Option A is wrong because Parameter Store can store secrets but does not support automatic rotation for RDS. Option B is wrong because KMS is for encryption keys, not secret storage. Option D is wrong because IAM roles cannot store credentials; they provide permissions.
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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
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