- A
Use IAM database authentication for Aurora and eliminate the use of database passwords.
Why wrong: IAM authentication still requires the microservices to obtain temporary credentials, but it does not store passwords; however, the question asks to prevent hardcoding, and IAM auth tokens are still retrieved programmatically.
- B
Use AWS Systems Manager Parameter Store to store the credentials and grant access via IAM roles.
Why wrong: Parameter Store does not automatically rotate RDS credentials.
- C
Use AWS Secrets Manager to store the credentials, configure automatic rotation, and attach a resource-based policy to allow access only from the microservices' IAM roles.
Secrets Manager provides automatic rotation and fine-grained access control.
- D
Store the credentials in an encrypted S3 bucket and grant access to the microservices via bucket policies.
Why wrong: S3 does not provide automatic rotation or easy access control for secrets.
Quick Answer
The answer is to use AWS Secrets Manager to store the credentials, configure automatic rotation, and attach a resource-based policy to allow access only from the microservices' IAM roles. This solution directly addresses the need to securely manage database credentials by eliminating hardcoded secrets, enforcing automatic rotation to limit the blast radius of a leak, and using IAM policies to restrict access to authorized microservices only. On the AWS Certified Database Specialty DBS-C01 exam, this scenario tests your understanding of how to secure database credentials with AWS Secrets Manager versus alternatives like Systems Manager Parameter Store, which lacks native rotation for RDS, or IAM database authentication, which still requires temporary credential management. A common trap is choosing Parameter Store because it stores secrets, but it does not automate rotation. Remember the memory tip: “Secrets Manager rotates; Parameter Store just stores.”
DBS-C01 Database Security Practice Question
This DBS-C01 practice question tests your understanding of database security. 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 an e-commerce platform on AWS using an Amazon Aurora MySQL database. The database is accessed by multiple microservices, each using a separate database user. The security team recently discovered that a developer accidentally committed database credentials to a public GitHub repository. The credentials were for a user that had write access to the database. The team immediately revoked the credentials and rotated them. However, they want to prevent such incidents from happening again. They need a solution that ensures credentials are not hardcoded in application code, are rotated automatically, and are accessible only to authorized microservices. What should they do?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"immediately / without restart"Why it matters: Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.
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
Use AWS Secrets Manager to store the credentials, configure automatic rotation, and attach a resource-based policy to allow access only from the microservices' IAM roles.
Option B is correct. AWS Secrets Manager allows storing credentials, automatic rotation, and fine-grained access control via IAM policies. Each microservice can assume an IAM role that grants access to Secrets Manager. Option A is wrong because Systems Manager Parameter Store does not support automatic rotation for RDS credentials. Option C is wrong because IAM database authentication does not eliminate the need for secrets; it uses IAM roles for authentication, but the microservices still need to obtain temporary credentials. Option D is wrong because storing secrets in S3 with encryption does not provide automatic rotation or easy access control.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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 IAM database authentication for Aurora and eliminate the use of database passwords.
Why it's wrong here
IAM authentication still requires the microservices to obtain temporary credentials, but it does not store passwords; however, the question asks to prevent hardcoding, and IAM auth tokens are still retrieved programmatically.
- ✗
Use AWS Systems Manager Parameter Store to store the credentials and grant access via IAM roles.
Why it's wrong here
Parameter Store does not automatically rotate RDS credentials.
- ✓
Use AWS Secrets Manager to store the credentials, configure automatic rotation, and attach a resource-based policy to allow access only from the microservices' IAM roles.
Why this is correct
Secrets Manager provides automatic rotation and fine-grained access control.
Clue confirmation
The clue word "immediately / without restart" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
Store the credentials in an encrypted S3 bucket and grant access to the microservices via bucket policies.
Why it's wrong here
S3 does not provide automatic rotation or easy access control for secrets.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DBS-C01 NAT questions on configuration and troubleshooting.
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Database Security — study guide chapter
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FAQ
Questions learners often ask
What does this DBS-C01 question test?
Database Security — This question tests Database Security — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Use AWS Secrets Manager to store the credentials, configure automatic rotation, and attach a resource-based policy to allow access only from the microservices' IAM roles. — Option B is correct. AWS Secrets Manager allows storing credentials, automatic rotation, and fine-grained access control via IAM policies. Each microservice can assume an IAM role that grants access to Secrets Manager. Option A is wrong because Systems Manager Parameter Store does not support automatic rotation for RDS credentials. Option C is wrong because IAM database authentication does not eliminate the need for secrets; it uses IAM roles for authentication, but the microservices still need to obtain temporary credentials. Option D is wrong because storing secrets in S3 with encryption does not provide automatic rotation or easy access control.
What should I do if I get this DBS-C01 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DBS-C01 NAT questions on configuration and troubleshooting.
Are there clue words in this question I should notice?
Yes — watch for: "immediately / without restart". Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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 →
Same concept, more angles
2 more ways this is tested on DBS-C01
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. A company runs an Amazon Aurora MySQL-compatible database cluster. The security team requires that all database credentials be rotated automatically every 30 days. Which combination of AWS services can meet this requirement with minimal operational overhead?
hard- A.Use IAM database authentication and rotate the IAM user keys every 30 days.
- ✓ B.Store the password in AWS Secrets Manager and enable automatic rotation with a 30-day interval.
- C.Use AWS CloudHSM to generate a new password and a Lambda function to update the database.
- D.Store the password in AWS Systems Manager Parameter Store and use a scheduled Lambda function to update the password.
Why B: AWS Secrets Manager can automatically rotate secrets for Amazon RDS databases. Option A is wrong because IAM database authentication does not handle password rotation. Option B is wrong because Systems Manager Parameter Store can store secrets but does not have built-in rotation for RDS. Option D is wrong because CloudHSM does not manage database password rotation.
Variation 2. A company is using Amazon Aurora MySQL-Compatible Edition. The security team wants to ensure that database credentials are not stored in application configuration files. They decide to use AWS Secrets Manager to manage credentials. The application is hosted on Amazon EC2 instances that have an IAM role attached. What is the most secure way to grant the application access to the secret?
hard- ✓ A.Grant the IAM role attached to the EC2 instance permissions to read the secret, and use the Secrets Manager API to retrieve it at runtime.
- B.Store the secret in the application code and rotate it periodically.
- C.Attach a resource-based policy to the EC2 instance allowing access to the secret.
- D.Store the secret in an encrypted S3 bucket and have the application download it at startup.
Why A: Option D is correct because the most secure approach is to grant the EC2 IAM role permission to read the secret using an IAM policy attached to the role, and then have the application call the Secrets Manager API to retrieve the secret at runtime. This avoids storing secrets in code or configuration files. Option A is wrong because hardcoding credentials defeats the purpose. Option B is wrong because storing the secret in a configuration file is not secure. Option C is wrong because you should not attach a resource-based policy to the EC2 instance; IAM roles are the correct mechanism.
Last reviewed: Jun 20, 2026
This DBS-C01 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 DBS-C01 exam.
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