- A
Configure the training job to run in a VPC with S3 VPC Endpoint
Why wrong: Addresses network access, not IAM permissions.
- B
Create an IAM role with S3 read access and assign it to the SageMaker training job
SageMaker needs a role with permissions to read S3 data.
- C
Enable SSE-KMS on the S3 bucket
Why wrong: SSE-S3 already used; KMS not needed.
- D
Add a bucket policy allowing s3:GetObject for all principals
Why wrong: Too permissive and does not address IAM role.
Question 168 of 1,755
MLS-C01 IAM Role Practice Question
This MLS-C01 practice question tests your understanding of machine learning implementation and operations. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. A key principle to apply: iAM Role. 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 uses SageMaker to train a model each night. The training data is stored in an S3 bucket with SSE-S3 encryption. The training job fails with an access denied error. Which configuration is needed?
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
✓
Create an IAM role with S3 read access and assign it to the SageMaker training job
The training job fails because SageMaker does not have the necessary permissions to read the data from S3. The solution is to create an IAM role with S3 read access (s3:GetObject) and assign it to the SageMaker training job. Option A is incorrect because VPC endpoints are not required for this error and are unrelated to encryption. Option C is incorrect because SSE-S3 encryption is already enabled and does not require KMS. Option D is incorrect because a bucket policy allowing all principals is insecure and not the proper way to grant permissions to SageMaker.
Key principle: IAM Role
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure the training job to run in a VPC with S3 VPC Endpoint
Why it's wrong here
Addresses network access, not IAM permissions.
- ✓
Create an IAM role with S3 read access and assign it to the SageMaker training job
Why this is correct
SageMaker needs a role with permissions to read S3 data.
Related concept
IAM Role
- ✗
Enable SSE-KMS on the S3 bucket
Why it's wrong here
SSE-S3 already used; KMS not needed.
- ✗
Add a bucket policy allowing s3:GetObject for all principals
Why it's wrong here
Too permissive and does not address IAM role.
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
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- IAM Role
- SageMaker Training Job Permissions
- SSE-S3 Encryption
TExam Day Tips
- 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
IAM Role
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.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
What to study next
Got this wrong? Here's your next step.
Review iAM Role, then practise related MLS-C01 questions on the same topic to reinforce the concept.
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Machine Learning Implementation and Operations — study guide chapter
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Machine Learning Implementation and Operations practice questions
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FAQ
Questions learners often ask
What does this MLS-C01 question test?
Machine Learning Implementation and Operations — This question tests Machine Learning Implementation and Operations — IAM Role.
What is the correct answer to this question?
The correct answer is: Create an IAM role with S3 read access and assign it to the SageMaker training job — The training job fails because SageMaker does not have the necessary permissions to read the data from S3. The solution is to create an IAM role with S3 read access (s3:GetObject) and assign it to the SageMaker training job. Option A is incorrect because VPC endpoints are not required for this error and are unrelated to encryption. Option C is incorrect because SSE-S3 encryption is already enabled and does not require KMS. Option D is incorrect because a bucket policy allowing all principals is insecure and not the proper way to grant permissions to SageMaker.
What should I do if I get this MLS-C01 question wrong?
Review iAM Role, then practise related MLS-C01 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
IAM Role
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Last reviewed: Jun 20, 2026
This MLS-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 MLS-C01 exam.
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