- A
Place SageMaker training job in a private subnet with a NAT gateway and route traffic through the internet
Why wrong: NAT gateway sends traffic to the internet, which could cross regions.
- B
Configure S3 Transfer Acceleration and use a public SageMaker training job
Why wrong: Transfer Acceleration uses edge locations and could cause data to leave the region.
- C
Use AWS Glue to copy data to an EBS volume attached to the training instance
Why wrong: Glue would still need to access S3, and EBS volumes are in the same AZ, but the initial data transfer may not be controlled.
- D
Use S3 VPC endpoints and place SageMaker training job in a private subnet with no internet access
VPC endpoints keep S3 traffic within AWS network and same region; no internet access ensures residency.
AIF-C01 Practice Question: Security, Compliance, and Governance for AI Solutions
This AIF-C01 practice question tests your understanding of security, compliance, and governance for ai solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 financial services company uses Amazon SageMaker to train models with sensitive customer data. They must ensure that no data leaves a specific AWS Region due to data residency regulations. The training data is in S3. Which architecture meets this requirement while minimizing data transfer?
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 S3 VPC endpoints and place SageMaker training job in a private subnet with no internet access
Using a VPC with S3 VPC endpoints ensures data stays within the AWS network and does not traverse the internet. Data remains in the same Region because S3 endpoints are Regional.
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.
- ✗
Place SageMaker training job in a private subnet with a NAT gateway and route traffic through the internet
- ✗
Configure S3 Transfer Acceleration and use a public SageMaker training job
Why it's wrong here
Transfer Acceleration uses edge locations and could cause data to leave the region.
- ✗
Use AWS Glue to copy data to an EBS volume attached to the training instance
Why it's wrong here
Glue would still need to access S3, and EBS volumes are in the same AZ, but the initial data transfer may not be controlled.
- ✓
Use S3 VPC endpoints and place SageMaker training job in a private subnet with no internet access
Why this is correct
VPC endpoints keep S3 traffic within AWS network and same region; no internet access ensures residency.
Related concept
CIDR notation defines the prefix length.
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 AIF-C01 subnetting questions on CIDR, address ranges, and subnet selection.
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Security, Compliance, and Governance for AI Solutions — study guide chapter
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FAQ
Questions learners often ask
What does this AIF-C01 question test?
Security, Compliance, and Governance for AI Solutions — This question tests Security, Compliance, and Governance for AI Solutions — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Use S3 VPC endpoints and place SageMaker training job in a private subnet with no internet access — Using a VPC with S3 VPC endpoints ensures data stays within the AWS network and does not traverse the internet. Data remains in the same Region because S3 endpoints are Regional.
What should I do if I get this AIF-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 AIF-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
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