- A
Enable network isolation and provide VPC subnet and security group
Network isolation blocks internet; VPC config allows access to private resources via VPC endpoints.
- B
Enable network isolation only, without VPC configuration
Why wrong: Without VPC config, the job cannot reach any VPC resources, including private S3.
- C
Disable network isolation but restrict security group rules
Why wrong: Disabling network isolation allows internet access; security group rules may still allow outbound traffic.
- D
Use a public S3 bucket with bucket policies
Why wrong: Using a public bucket would expose data and does not meet the private requirement.
Question 197 of 1,000
MLA-C01 Practice Question: ML Solution Monitoring, Maintenance, and Security
This MLA-C01 practice question tests your understanding of ml solution monitoring, maintenance, and security. 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 team trains a model using SageMaker and wants to ensure that the training job cannot access the internet, but needs to access a private S3 bucket in the same VPC. Which configuration should they use?
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
✓
Enable network isolation and provide VPC subnet and security group
SageMaker training jobs can be configured with VPC settings. Enabling network isolation prevents internet access, but the job still needs VPC connectivity to reach S3 via VPC endpoints. Setting the VPC config allows access to private resources.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enable network isolation and provide VPC subnet and security group
Why this is correct
Network isolation blocks internet; VPC config allows access to private resources via VPC endpoints.
Related concept
CIDR notation defines the prefix length.
- ✗
Enable network isolation only, without VPC configuration
Why it's wrong here
Without VPC config, the job cannot reach any VPC resources, including private S3.
- ✗
Disable network isolation but restrict security group rules
Why it's wrong here
Disabling network isolation allows internet access; security group rules may still allow outbound traffic.
- ✗
Use a public S3 bucket with bucket policies
Why it's wrong here
Using a public bucket would expose data and does not meet the private requirement.
Common exam traps
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
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 block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related MLA-C01 subnetting questions on CIDR, address ranges, and subnet selection.
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ML Solution Monitoring, Maintenance, and Security — study guide chapter
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FAQ
Questions learners often ask
What does this MLA-C01 question test?
ML Solution Monitoring, Maintenance, and Security — This question tests ML Solution Monitoring, Maintenance, and Security — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Enable network isolation and provide VPC subnet and security group — SageMaker training jobs can be configured with VPC settings. Enabling network isolation prevents internet access, but the job still needs VPC connectivity to reach S3 via VPC endpoints. Setting the VPC config allows access to private resources.
What should I do if I get this MLA-C01 question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related MLA-C01 subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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Last reviewed: Jul 4, 2026
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.
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