- A
Use IAM policies to restrict who can access the notebook instance.
IAM policies can limit which users can create presigned URLs for the notebook.
- B
Disable direct internet access and use a VPC with a NAT gateway for outbound.
Why wrong: This is a security measure, but we need three; we selected A, D, E as the most direct.
- C
Attach a lifecycle configuration that runs a script to download data from a public S3 bucket.
Why wrong: Downloading data from a public S3 bucket could be a security risk.
- D
Enable AWS CloudTrail to log all notebook API calls.
CloudTrail provides audit logs for security monitoring.
- E
Encrypt the notebook instance's EBS volume using AWS KMS.
Encryption at rest protects data on the instance.
Question 830 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. 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 company needs to secure a SageMaker notebook instance that contains sensitive data. Which THREE of the following are effective security measures? (Select THREE.)
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 IAM policies to restrict who can access the notebook instance.
IAM policies are the primary mechanism for controlling access to AWS resources, including SageMaker notebook instances, ensuring only authorized users can interact with the instance. Disabling direct internet access and using a VPC with a NAT gateway is a network security best practice that prevents exposure to the public internet while allowing controlled outbound traffic, which is critical for sensitive data. Encrypting the EBS volume with AWS KMS protects data at rest. AWS CloudTrail is useful for auditing API calls, but it is not a direct security measure that prevents unauthorized access or data exposure; it is a logging and monitoring tool.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 IAM policies to restrict who can access the notebook instance.
Why this is correct
IAM policies can limit which users can create presigned URLs for the notebook.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Disable direct internet access and use a VPC with a NAT gateway for outbound.
Why it's wrong here
This is a security measure, but we need three; we selected A, D, E as the most direct.
- ✗
Attach a lifecycle configuration that runs a script to download data from a public S3 bucket.
Why it's wrong here
Downloading data from a public S3 bucket could be a security risk.
- ✓
Enable AWS CloudTrail to log all notebook API calls.
Why this is correct
CloudTrail provides audit logs for security monitoring.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Encrypt the notebook instance's EBS volume using AWS KMS.
Why this is correct
Encryption at rest protects data on the instance.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
A common trap is to consider AWS CloudTrail as an effective security measure for protecting the notebook instance itself. While CloudTrail provides an audit trail, it does not prevent unauthorized access or data leakage. Direct security controls like IAM, VPC configuration, and encryption are more effective.
Detailed technical explanation
How to think about this question
SageMaker notebook instances are backed by Amazon EBS volumes, and enabling encryption at rest using AWS KMS ensures that all data written to the volume, including temporary files and model artifacts, is encrypted with a customer-managed key. CloudTrail logs API calls such as CreateNotebookInstance, DeleteNotebookInstance, and StartNotebookInstance, providing an audit trail that can be used to detect unauthorized access or changes. Under the hood, KMS uses envelope encryption where the EBS volume is encrypted with a data key that is itself encrypted by a KMS key, and CloudTrail records the request parameters and response elements for each API call, which can be delivered to an S3 bucket for long-term retention and analysis.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
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
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Visual reference
What to study next
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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 — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use IAM policies to restrict who can access the notebook instance. — IAM policies are the primary mechanism for controlling access to AWS resources, including SageMaker notebook instances, ensuring only authorized users can interact with the instance. Disabling direct internet access and using a VPC with a NAT gateway is a network security best practice that prevents exposure to the public internet while allowing controlled outbound traffic, which is critical for sensitive data. Encrypting the EBS volume with AWS KMS protects data at rest. AWS CloudTrail is useful for auditing API calls, but it is not a direct security measure that prevents unauthorized access or data exposure; it is a logging and monitoring tool.
What should I do if I get this MLA-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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