The answer is AWS Systems Manager Parameter Store with a SecureString parameter type. This is correct because SecureString parameters are automatically encrypted at rest using AWS KMS and are transmitted securely via TLS when retrieved by the SSM Agent on EC2 instances, ensuring end-to-end protection for sensitive configuration values like database passwords. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this question tests your understanding of secure configuration management and the distinction between Parameter Store and other services like Secrets Manager or plaintext SSM parameters; a common trap is choosing Secrets Manager for its automatic rotation, but the scenario here only requires encrypted storage and retrieval, not rotation. Remember the memory tip: “SecureString = KMS encryption + SSM Agent retrieval” — if the question emphasizes encryption at rest and in transit without mentioning rotation, Parameter Store SecureString is your go-to.
DOP-C02 Configuration Management and IaC Practice Question
This DOP-C02 practice question tests your understanding of configuration management and iac. 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 DevOps engineer needs to manage configuration files for multiple applications across several EC2 instances. The configuration values are sensitive (e.g., database passwords) and must be encrypted at rest and in transit. Which AWS service should be used to store and retrieve these configuration values?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
AWS Systems Manager Parameter Store (SecureString)
AWS Systems Manager Parameter Store supports secure string parameters that are encrypted with KMS. It also integrates with EC2 instances via the SSM Agent for secure retrieval. Option B is correct. Options A, C, and D either lack encryption or are not designed for configuration management.
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 (SecureString)
Why this is correct
Parameter Store provides secure, hierarchical storage for configuration data with encryption.
Related concept
Read the scenario before looking for a memorised answer.
✗
AWS CloudFormation template parameters
Why it's wrong here
Template parameters are for stack creation, not dynamic runtime retrieval.
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Amazon DynamoDB with encryption
Why it's wrong here
DynamoDB is a NoSQL database, not a configuration store.
✗
Amazon S3 with server-side encryption
Why it's wrong here
S3 is an object store, not designed for hierarchy or easy retrieval from EC2.
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.
Configuration Management and IaC — This question tests Configuration Management and IaC — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS Systems Manager Parameter Store (SecureString) — AWS Systems Manager Parameter Store supports secure string parameters that are encrypted with KMS. It also integrates with EC2 instances via the SSM Agent for secure retrieval. Option B is correct. Options A, C, and D either lack encryption or are not designed for configuration management.
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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This DOP-C02 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 DOP-C02 exam.
Question Discussion
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