The answer is to store the credentials in AWS Secrets Manager and grant the CodeBuild service role permission to retrieve them. This is the most secure approach because Secrets Manager encrypts secrets at rest and in transit, integrates natively with IAM for fine-grained access control, and supports automatic credential rotation, which eliminates hardcoded or exposed secrets. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this scenario tests your understanding of secure secret delivery in CI/CD pipelines—a common trap is choosing environment variables, which appear in plain text in build logs, or Parameter Store, which lacks built-in rotation. Remember the mnemonic “Secrets for Security, Roles for Reach” to recall that Secrets Manager plus a properly scoped service role is the gold standard for securely providing database credentials to CodeBuild.
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 company uses AWS CodeBuild to build and test code. The build process needs to access a private Amazon RDS database to run integration tests. What is the most secure way to provide database credentials to the build project?
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 grant the CodeBuild service role permission to retrieve them.
Option B is correct because AWS Secrets Manager provides secure storage and retrieval of secrets, and CodeBuild can access them using a service role. Option A is wrong because environment variables are visible in plain text. Option C is wrong because storing credentials in S3 is less secure and requires additional access. Option D is wrong because parameter store does not support automatic rotation.
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.
✗
Store the credentials as environment variables in the build project configuration.
Why it's wrong here
Environment variables are visible in the build logs and can be exposed.
✗
Store the credentials in AWS Systems Manager Parameter Store as a SecureString parameter.
Why it's wrong here
Parameter Store can store secrets, but Secrets Manager is the preferred service for credentials.
✓
Store the credentials in AWS Secrets Manager and grant the CodeBuild service role permission to retrieve them.
Why this is correct
Secrets Manager provides secure, auditable access to secrets.
Related concept
Read the scenario before looking for a memorised answer.
✗
Store the credentials in an encrypted S3 bucket and download them during the build phase.
Why it's wrong here
This approach is less secure because the credentials are stored in a file.
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 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 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 grant the CodeBuild service role permission to retrieve them. — Option B is correct because AWS Secrets Manager provides secure storage and retrieval of secrets, and CodeBuild can access them using a service role. Option A is wrong because environment variables are visible in plain text. Option C is wrong because storing credentials in S3 is less secure and requires additional access. Option D is wrong because parameter store does not support automatic rotation.
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.
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Question Discussion
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