- A
AWS Secrets Manager
Correct. AWS Secrets Manager is a fully managed service that stores, rotates, and retrieves secrets such as database credentials. It supports automatic rotation with built-in integration for Amazon RDS, Aurora, Redshift, and other services. Secrets Manager can rotate passwords on a schedule and use versioning to ensure that applications continue to work during rotation by serving the current version while a new version is being created.
- B
AWS Systems Manager Parameter Store
Why wrong: Incorrect. AWS Systems Manager Parameter Store can store secure strings (e.g., passwords) but does not provide built-in automatic rotation. To rotate secrets, you would need to create a custom AWS Lambda function and manage the rotation logic yourself, which adds complexity and does not meet the requirement for a fully managed, automatic solution.
- C
AWS Key Management Service (AWS KMS)
Why wrong: Incorrect. AWS KMS is a service for creating and managing encryption keys. It can encrypt data at rest, but it is not designed to store or rotate database passwords. KMS does not provide the ability to automatically rotate application credentials or update database user passwords.
- D
AWS Identity and Access Management (IAM)
Why wrong: Incorrect. IAM is used to manage access to AWS resources by creating users, groups, roles, and policies. It does not store or rotate database passwords for applications. IAM can grant applications permission to retrieve secrets from Secrets Manager, but it is not the service that manages the secrets themselves.
CLF-C02 Security and Compliance Practice Question
This CLF-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 runs a web application that connects to an Amazon RDS for MySQL database. The security policy requires that the database password be rotated every 30 days. The development team wants a fully managed solution that automatically rotates the password, handles the update in RDS, and provides the application with the latest credentials without any code changes. The application should also continue to work during the rotation process. Which AWS service should the company use to meet these requirements?
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
AWS Secrets Manager
AWS Secrets Manager is the correct choice because it provides a fully managed service for automatic password rotation every 30 days, directly integrates with Amazon RDS for MySQL to update the database credentials, and supplies the latest credentials to the application via the Secrets Manager API without requiring any code changes. The rotation process is designed to ensure application availability by using a staged rotation strategy (e.g., creating a new credential while the old one remains valid) so the application continues to work during the 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.
- ✓
AWS Secrets Manager
Why this is correct
Correct. AWS Secrets Manager is a fully managed service that stores, rotates, and retrieves secrets such as database credentials. It supports automatic rotation with built-in integration for Amazon RDS, Aurora, Redshift, and other services. Secrets Manager can rotate passwords on a schedule and use versioning to ensure that applications continue to work during rotation by serving the current version while a new version is being created.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Systems Manager Parameter Store
Why it's wrong here
Incorrect. AWS Systems Manager Parameter Store can store secure strings (e.g., passwords) but does not provide built-in automatic rotation. To rotate secrets, you would need to create a custom AWS Lambda function and manage the rotation logic yourself, which adds complexity and does not meet the requirement for a fully managed, automatic solution.
- ✗
AWS Key Management Service (AWS KMS)
Why it's wrong here
Incorrect. AWS KMS is a service for creating and managing encryption keys. It can encrypt data at rest, but it is not designed to store or rotate database passwords. KMS does not provide the ability to automatically rotate application credentials or update database user passwords.
- ✗
AWS Identity and Access Management (IAM)
Why it's wrong here
Incorrect. IAM is used to manage access to AWS resources by creating users, groups, roles, and policies. It does not store or rotate database passwords for applications. IAM can grant applications permission to retrieve secrets from Secrets Manager, but it is not the service that manages the secrets themselves.
Common exam traps
Common exam trap: answer the scenario, not the keyword
AWS often tests the distinction between Secrets Manager (for automatic rotation and RDS integration) and Systems Manager Parameter Store (for static configuration or manual rotation), leading candidates to choose Parameter Store because it can store secrets but lacks the automated rotation and RDS-specific update capability required here.
Detailed technical explanation
How to think about this question
Secrets Manager uses a Lambda function (custom or provided by AWS) to perform the rotation, which updates the RDS password and creates a new secret version while keeping the previous version active during the rotation window to avoid downtime. The application retrieves the current secret via the GetSecretValue API call, which returns the latest version by default, ensuring zero-code changes. Under the hood, Secrets Manager enforces a rotation schedule using CloudWatch Events and supports a staged rotation (e.g., 'AWSPENDING' and 'AWSCURRENT' labels) to maintain availability.
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 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this CLF-C02 question test?
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: AWS Secrets Manager — AWS Secrets Manager is the correct choice because it provides a fully managed service for automatic password rotation every 30 days, directly integrates with Amazon RDS for MySQL to update the database credentials, and supplies the latest credentials to the application via the Secrets Manager API without requiring any code changes. The rotation process is designed to ensure application availability by using a staged rotation strategy (e.g., creating a new credential while the old one remains valid) so the application continues to work during the rotation.
What should I do if I get this CLF-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.
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Last reviewed: Jun 30, 2026
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