The answer is AWS Secrets Manager, the purpose-built service for secure secret storage with automatic rotation and audit. It is the correct choice because it is designed specifically to manage the entire lifecycle of secrets like database passwords and API keys, offering native integration with AWS services such as Amazon RDS, Redshift, and DocumentDB to rotate credentials automatically without custom code. Every access to a secret is logged in AWS CloudTrail, providing a complete audit trail for compliance. On the AWS Certified Cloud Practitioner CLF-C02 exam, this question tests your understanding of which service is purpose-built for secret management versus general parameter storage like AWS Systems Manager Parameter Store, which lacks native rotation. A common trap is choosing Parameter Store because it can store secrets, but it does not offer automatic rotation or the same level of audit integration. Remember the memory tip: Secrets Manager is the only service that “rotates and audits” by design, making it the dedicated tool for secret storage with rotation and audit.
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 needs to store database passwords and API keys used by their applications, with automatic rotation and audit logging of access. Which AWS service is purpose-built for this?
Why wrong: Parameter Store can store secrets but lacks native automatic rotation for database credentials — Secrets Manager is purpose-built for secrets with rotation.
B
AWS Key Management Service (KMS)
Why wrong: KMS manages cryptographic keys used to encrypt data — it doesn't store application secrets like passwords or API keys.
C
AWS Secrets Manager
Secrets Manager stores, retrieves, and automatically rotates secrets with native RDS integration, IAM-based access control, and CloudTrail audit logging.
D
Amazon S3 with bucket policies
Why wrong: Storing secrets in S3 lacks automatic rotation, encryption-by-default for values, or fine-grained per-secret access control.
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 purpose-built for securely storing, automatically rotating, and auditing access to database passwords, API keys, and other secrets. It natively supports automatic rotation with built-in integrations for Amazon RDS, Redshift, and DocumentDB, and it logs every secret access call in AWS CloudTrail for audit compliance.
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 Systems Manager Parameter Store
Why it's wrong here
Parameter Store can store secrets but lacks native automatic rotation for database credentials — Secrets Manager is purpose-built for secrets with rotation.
✗
AWS Key Management Service (KMS)
Why it's wrong here
KMS manages cryptographic keys used to encrypt data — it doesn't store application secrets like passwords or API keys.
✓
AWS Secrets Manager
Why this is correct
Secrets Manager stores, retrieves, and automatically rotates secrets with native RDS integration, IAM-based access control, and CloudTrail audit logging.
Related concept
Read the scenario before looking for a memorised answer.
✗
Amazon S3 with bucket policies
Why it's wrong here
Storing secrets in S3 lacks automatic rotation, encryption-by-default for values, or fine-grained per-secret access control.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse AWS Systems Manager Parameter Store (which can store secrets but lacks automatic rotation) with AWS Secrets Manager, leading them to choose Parameter Store when the question explicitly requires automatic rotation and audit logging.
Detailed technical explanation
How to think about this question
Under the hood, Secrets Manager uses a backing encryption key (either a KMS key or the default aws/secretsmanager key) to encrypt secret values at rest, and integrates with AWS Lambda to execute rotation functions that update the secret and the associated resource (e.g., RDS password) in a single, coordinated operation. A subtle behavior is that when you enable automatic rotation, Secrets Manager immediately rotates the secret once to establish a baseline, which can cause a brief window where the old secret is still valid if the rotation function uses the 'test and set' pattern. In a real-world scenario, if you need to rotate an API key for a third-party service, you must write a custom Lambda rotation function because Secrets Manager only provides built-in rotation for AWS database services.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CLF-C02 question in full detail.
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 purpose-built for securely storing, automatically rotating, and auditing access to database passwords, API keys, and other secrets. It natively supports automatic rotation with built-in integrations for Amazon RDS, Redshift, and DocumentDB, and it logs every secret access call in AWS CloudTrail for audit compliance.
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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Question Discussion
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