The answer is to enable the ECS task execution role to pass the task role to the container, attach an IAM policy with S3 permissions to that task role, and specify the taskRoleArn in the task definition. This approach avoids long-term credentials for ECS Fargate S3 IAM roles by leveraging IAM roles for tasks, which provide temporary credentials automatically rotated by the AWS Security Token Service. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this tests your understanding of the principle of least privilege and the distinction between task roles and execution roles—a common trap is assuming Secrets Manager is needed, but that still requires credentials to access the secret, while the task role eliminates any stored credentials entirely. Remember, the task role is for the application, the execution role is for ECS itself, and the taskRoleArn is the key to granting S3 access without hardcoded keys. Memory tip: “Task role, no token stored—Fargate’s IAM role is the only credential you need.”
SAP-C02 Design for New Solutions Practice Question
This SAP-C02 practice question tests your understanding of design for new solutions. 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 company is designing a new application that will run on Amazon ECS with Fargate. The application needs to store files in Amazon S3. The company has a strict security requirement that the application must not have any long-term credentials stored in the container image or environment variables. Which THREE steps should the company take to meet this requirement? (Choose THREE.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create an IAM role with permissions to access the S3 bucket.
IAM roles for tasks allow containers to obtain temporary credentials. An IAM policy with S3 permissions is attached to the role. The task definition must include a taskRoleArn. Option A, B, and D are correct. Option C is wrong because storing credentials in Secrets Manager still requires credentials to access the secret. Option E is wrong because AWS CLI will automatically use credentials from the task role, no configuration needed.
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 AWS access keys in AWS Secrets Manager and retrieve them at runtime.
Why it's wrong here
This still requires credentials to access the secret.
✓
Create an IAM role with permissions to access the S3 bucket.
Why this is correct
The task role will assume this role to get temporary credentials.
Related concept
Read the scenario before looking for a memorised answer.
✓
Attach the IAM role to the ECS task definition as the task role.
Why this is correct
The taskRoleArn in the task definition enables the container to assume the role.
Related concept
Read the scenario before looking for a memorised answer.
✓
Enable the ECS task execution role to pass the task role to the container.
Why this is correct
The execution role grants ECS permission to pass the task role.
Related concept
Read the scenario before looking for a memorised answer.
✗
Configure the application to use the AWS CLI with environment variables for credentials.
Why it's wrong here
Environment variables are long-term credentials, violating the requirement.
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 SAP-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.
Design for New Solutions — This question tests Design for New Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create an IAM role with permissions to access the S3 bucket. — IAM roles for tasks allow containers to obtain temporary credentials. An IAM policy with S3 permissions is attached to the role. The task definition must include a taskRoleArn. Option A, B, and D are correct. Option C is wrong because storing credentials in Secrets Manager still requires credentials to access the secret. Option E is wrong because AWS CLI will automatically use credentials from the task role, no configuration needed.
What should I do if I get this SAP-C02 question wrong?
Identify which SAP-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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Question Discussion
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