← DOP-C02·Amazon Web Services

Question 148 of 1,750

Security and Compliance →mediumMultiple ChoiceObjective-mapped

Retrieve Secrets Manager Secrets Securely from EC2

This DOP-C02 practice question tests your understanding of security and compliance. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 is using AWS Secrets Manager to store database credentials for a multi-tier application. The application runs on EC2 instances in an Auto Scaling group. The DevOps engineer has configured the instances to retrieve the secret at boot time using a script that calls the AWS CLI. Recently, the security team discovered that the secret was exposed in the instance's user data logs. The engineer needs to implement a more secure method to access the secret without storing it in user data. The application code can be modified. The environment uses IAM roles for EC2. Which solution best meets the security requirements?

A
Store the secret in a configuration file on the EC2 instance and encrypt the file system.
Why wrong: The secret is still stored on disk and could be exposed if the instance is compromised.
B
Store the secret in AWS Systems Manager Parameter Store and retrieve it via the AWS CLI at boot time.
Why wrong: This still requires a script that could be exposed; the CLI command would be in user data.
C
Modify the application code to use the AWS SDK to retrieve the secret from Secrets Manager using the instance's IAM role.
This retrieves the secret at runtime without storing it in user data or on disk.
D
Use a KMS key to encrypt the secret and store the encrypted value in user data.
Why wrong: The encrypted value is still in user data and could be decrypted if the key is accessible.

Full breakdown with real-world context →

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

✓

Modify the application code to use the AWS SDK to retrieve the secret from Secrets Manager using the instance's IAM role.

Option C is correct because modifying the application code to use the AWS SDK allows the application to retrieve the secret directly from Secrets Manager using the IAM role attached to the EC2 instance. This eliminates the need to store the secret in user data or any configuration file, as the SDK handles authentication and retrieval securely at runtime. Option A is incorrect because encrypting the file system does not prevent exposure of the secret if it is stored in a configuration file; the secret is still present in plaintext at rest until decrypted. Option B is incorrect because using Systems Manager Parameter Store does not inherently solve the issue; it still requires the script to call the AWS CLI at boot time, which could again be exposed in user data logs. Moreover, the question specifies that Secrets Manager is already in use, so switching to Parameter Store is unnecessary and does not address the root cause of storing secrets in user data. Option D is incorrect because storing the encrypted secret in user data does not prevent exposure; user data is still visible via the EC2 console or API, and decryption key management adds complexity without improving security posture.

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.

✗
Store the secret in a configuration file on the EC2 instance and encrypt the file system.
Why it's wrong here
The secret is still stored on disk and could be exposed if the instance is compromised.
✗
Store the secret in AWS Systems Manager Parameter Store and retrieve it via the AWS CLI at boot time.
Why it's wrong here
This still requires a script that could be exposed; the CLI command would be in user data.
✓
Modify the application code to use the AWS SDK to retrieve the secret from Secrets Manager using the instance's IAM role.
Why this is correct
This retrieves the secret at runtime without storing it in user data or on disk.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use a KMS key to encrypt the secret and store the encrypted value in user data.
Why it's wrong here
The encrypted value is still in user data and could be decrypted if the key is accessible.

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.

Trap categories for this question

Command / output trap
This still requires a script that could be exposed; the CLI command would be in user data.

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.

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FAQ

Questions learners often ask

What does this DOP-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: Modify the application code to use the AWS SDK to retrieve the secret from Secrets Manager using the instance's IAM role. — Option C is correct because modifying the application code to use the AWS SDK allows the application to retrieve the secret directly from Secrets Manager using the IAM role attached to the EC2 instance. This eliminates the need to store the secret in user data or any configuration file, as the SDK handles authentication and retrieval securely at runtime. Option A is incorrect because encrypting the file system does not prevent exposure of the secret if it is stored in a configuration file; the secret is still present in plaintext at rest until decrypted. Option B is incorrect because using Systems Manager Parameter Store does not inherently solve the issue; it still requires the script to call the AWS CLI at boot time, which could again be exposed in user data logs. Moreover, the question specifies that Secrets Manager is already in use, so switching to Parameter Store is unnecessary and does not address the root cause of storing secrets in user data. Option D is incorrect because storing the encrypted secret in user data does not prevent exposure; user data is still visible via the EC2 console or API, and decryption key management adds complexity without improving security posture.

What should I do if I get this DOP-C02 question wrong?

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.