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 machine learning engineer deploys a model to an Amazon SageMaker endpoint with data capture enabled. The endpoint uses a production variant with initial instance count of 2. After a week, they notice that the captured data is not being sent to the specified Amazon S3 bucket. The IAM role used by the endpoint has the following policy attached. What is the MOST likely reason for the failure?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The IAM role does not have permission to write to the correct S3 prefix.
Option C is correct because the IAM role attached to the SageMaker endpoint must have write permissions to the exact S3 prefix where data capture is configured. The policy shown likely grants access to a broader bucket or a different prefix, but not the specific path (e.g., s3://bucket-name/prefix/) that the endpoint's DataCaptureConfig specifies. Without s3:PutObject on that exact prefix, the captured data fails to upload silently.
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.
✗
The S3 bucket does not exist.
Why it's wrong here
The scenario does not indicate bucket creation failure, and the policy suggests the bucket exists.
✗
The S3 bucket uses AWS KMS encryption and the role lacks kms:Decrypt permission.
Why it's wrong here
No mention of KMS encryption in the policy or scenario.
✓
The IAM role does not have permission to write to the correct S3 prefix.
Why this is correct
The policy restricts writes to 'captures/' prefix, but the endpoint may use a different prefix.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The IAM role does not have s3:ListBucket permission.
Why it's wrong here
ListBucket is not required for PutObject.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume any S3 write permission on the bucket is sufficient, but SageMaker data capture requires explicit permission on the exact prefix path, not just the bucket or a wildcard that doesn't match the configured prefix.
Trap categories for this question
Scenario analysis trap
The scenario does not indicate bucket creation failure, and the policy suggests the bucket exists.
Detailed technical explanation
How to think about this question
SageMaker data capture uses the endpoint's DataCaptureConfig to write JSON-line files to S3 at intervals (e.g., every 5 minutes). The IAM role must have an s3:PutObject permission on the exact prefix (e.g., s3://bucket/prefix/endpoint-name/). If the policy grants access to s3://bucket/* but the capture config uses s3://bucket/capture/, the write fails. Under the hood, SageMaker uses the AWS SDK's PutObject call, which returns a 403 AccessDenied if the prefix is not allowed.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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: The IAM role does not have permission to write to the correct S3 prefix. — Option C is correct because the IAM role attached to the SageMaker endpoint must have write permissions to the exact S3 prefix where data capture is configured. The policy shown likely grants access to a broader bucket or a different prefix, but not the specific path (e.g., s3://bucket-name/prefix/) that the endpoint's DataCaptureConfig specifies. Without s3:PutObject on that exact prefix, the captured data fails to upload silently.
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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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