MLA-C01 Practice Question: ML Solution Monitoring, Maintenance, and Security
A team wants to ensure that their SageMaker training jobs cannot access the internet for security reasons. However, they need to download a public PyTorch package for training. Which TWO steps should they take? (Choose TWO.)
⚠ Common exam trap
A common mix-up: candidates confuse 'no internet access' with 'no network access at all,' and incorrectly assume that disabling network isolation or using a NAT Gateway is necessary for downloading packages, when in fact private connectivity via VPC endpoints is the correct approach.
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
✓
Configure the training job to run in VPC-only mode
Enabling VPC-only mode (also known as network isolation) for a SageMaker training job ensures the job runs within a specified VPC and cannot access the internet. This satisfies the security requirement of blocking internet access. Option E is correct because creating an S3 VPC interface endpoint allows the training job to download the public PyTorch package from S3 privately, using AWS PrivateLink, without traversing the internet.
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 VPC-only mode
Why this is correct
VPC-only blocks internet access.
- ✗
Use a public subnet for the training job
Why it's wrong here
Public subnet has internet access via internet gateway.
- ✗
Disable network isolation for the training job
Why it's wrong here
Network isolation prevents internet but VPC-only is the correct setting; disabling isolation would allow internet.
- ✗
Attach a NAT Gateway to the VPC to allow outbound internet
Why it's wrong here
Defeats the no-internet requirement.
- ✓
Create an S3 VPC interface endpoint to access S3 privately
Why this is correct
Allows downloading packages from S3 without internet.
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 |
Go deeper
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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.