The correct combination is AWS CloudFormation for infrastructure and AWS Secrets Manager for secrets. CloudFormation enables you to automate deployment with secure credentials by treating your entire three-tier architecture—including the ALB, EC2 fleet, and RDS instance—as version-controlled infrastructure as code, which directly addresses the need to version the configuration. Secrets Manager securely stores the RDS master password and, crucially, natively supports automatic rotation for Amazon RDS databases, a capability that Systems Manager Parameter Store lacks. On the SOA-C02 exam, this question tests your ability to distinguish between services that manage secrets versus those that manage infrastructure; a common trap is choosing Parameter Store because it can store secrets, but it does not rotate RDS credentials automatically. Remember the mnemonic: “CloudFormation codes the stack, Secrets Manager rotates the key—Parameter Store just holds the key.”
SOA-C02 Deployment, Provisioning, and Automation Practice Question
This SOA-C02 practice question tests your understanding of deployment, provisioning, and automation. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 SysOps administrator needs to automate the deployment of a three-tier web application. The application consists of an Application Load Balancer, a fleet of EC2 instances running a web server, and an Amazon RDS MySQL database. The administrator must ensure that the database credentials are securely stored and automatically rotated. The administrator also needs to version the infrastructure configuration. Which combination of AWS services should the administrator use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
AWS CloudFormation for infrastructure and AWS Secrets Manager for secrets.
Option C is correct because AWS CloudFormation provides infrastructure as code for versioning, and AWS Secrets Manager securely stores and rotates database credentials. Option A is wrong because AWS Systems Manager Parameter Store can store secrets but does not natively rotate RDS credentials. Option B is wrong because AWS OpsWorks is a configuration management service, not primarily for IaC. Option D is wrong because AWS CodeCommit is a source control service, not for secret management.
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.
✗
AWS CloudFormation for infrastructure and AWS Systems Manager Parameter Store for secrets.
Why it's wrong here
Parameter Store does not automatically rotate RDS credentials.
✗
AWS OpsWorks for infrastructure and AWS Secrets Manager for secrets.
Why it's wrong here
OpsWorks is not the best choice for IaC.
✗
AWS CodeCommit for infrastructure versioning and AWS KMS for secrets.
Why it's wrong here
CodeCommit is for code, not infrastructure provisioning; KMS is encryption, not rotation.
✓
AWS CloudFormation for infrastructure and AWS Secrets Manager for secrets.
Static NAT maps one inside address to one outside address.
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 SOA-C02 NAT questions on configuration and troubleshooting.
Deployment, Provisioning, and Automation — This question tests Deployment, Provisioning, and Automation — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: AWS CloudFormation for infrastructure and AWS Secrets Manager for secrets. — Option C is correct because AWS CloudFormation provides infrastructure as code for versioning, and AWS Secrets Manager securely stores and rotates database credentials. Option A is wrong because AWS Systems Manager Parameter Store can store secrets but does not natively rotate RDS credentials. Option B is wrong because AWS OpsWorks is a configuration management service, not primarily for IaC. Option D is wrong because AWS CodeCommit is a source control service, not for secret management.
What should I do if I get this SOA-C02 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 SOA-C02 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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