hardMultiple ChoiceObjective-mapped
MLA-C01 Practice Question: A company uses SageMaker training jobs that need…
A company uses SageMaker training jobs that need to access data in an S3 bucket in a different AWS account. The bucket uses a bucket policy that allows access only from a specific VPC. How should they configure the training job?
⚠ Common exam trap
Test-takers frequently think a cross-account IAM role alone is sufficient, forgetting that the bucket policy's VPC restriction is a separate, mandatory condition that must be explicitly satisfied, and that the VPC endpoint alone does not grant cross-account permissions.
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
✓
Use cross-account access with an IAM role and add a bucket policy allowing the training job's VPC.
The training job in Account A needs to access an S3 bucket in Account B that is restricted to a specific VPC. This requires both cross-account IAM role trust (so the training job can assume a role in Account B) and a bucket policy that explicitly allows access from the VPC where the training job runs. Without the VPC condition in the bucket policy, the S3 service would deny requests even if the IAM role is valid, because the bucket policy enforces the VPC restriction.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use AWS DataSync to copy data to the training account's S3.
Why it's wrong here
DataSync is for large data transfers, not for providing real-time access.
- ✗
Create an IAM role in the source account and assume it from the training account.
Why it's wrong here
This handles cross-account access but doesn't satisfy the VPC condition.
- ✗
Use an S3 VPC endpoint in the training job's VPC and attach a bucket policy that allows the VPC.
Why it's wrong here
This addresses the VPC condition but not the cross-account IAM permission.
- ✓
Use cross-account access with an IAM role and add a bucket policy allowing the training job's VPC.
Why this is correct
This combines IAM role assumption and VPC condition to meet both 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 |
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This MLA-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 MLA-C01 exam.