- A
Use AWS Certificate Manager (ACM) for encryption
Why wrong: ACM handles SSL/TLS certificates, not KMS keys.
- B
Create a new KMS key and update the endpoint configuration
Why wrong: Updating the endpoint configuration may cause a brief outage during update.
- C
Manually rotate the key by recreating the endpoint
Why wrong: Recreating the endpoint causes downtime.
- D
Enable automatic key rotation on the existing KMS key
Automatic rotation rotates the key material without changing the key ID, causing no downtime.
Question 738 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. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 deploys a SageMaker model using AWS KMS for encryption at rest. They have a compliance requirement to rotate the KMS key every year without causing downtime for the inference endpoint. Which approach should they take?
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 automatic key rotation on the existing KMS key
AWS KMS supports automatic key rotation, which creates new backing keys annually while retaining the same key ID and metadata. This ensures that the SageMaker endpoint continues to use the same KMS key alias and configuration, so no endpoint update or downtime is required. Automatic rotation satisfies the compliance requirement without any manual intervention or endpoint recreation.
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 AWS Certificate Manager (ACM) for encryption
Why it's wrong here
ACM handles SSL/TLS certificates, not KMS keys.
- ✗
Create a new KMS key and update the endpoint configuration
Why it's wrong here
Updating the endpoint configuration may cause a brief outage during update.
- ✗
Manually rotate the key by recreating the endpoint
Why it's wrong here
Recreating the endpoint causes downtime.
- ✓
Enable automatic key rotation on the existing KMS key
Why this is correct
Automatic rotation rotates the key material without changing the key ID, causing no downtime.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think rotating a KMS key requires creating a new key and updating the resource (Option B), or that manual recreation is necessary (Option C), when in fact AWS KMS automatic key rotation handles the rotation seamlessly without any endpoint modification or downtime.
Detailed technical explanation
How to think about this question
When automatic key rotation is enabled on a customer managed key (CMK), AWS KMS generates new cryptographic material each year but retains the old material for decryption of existing data. SageMaker endpoints reference the KMS key by its key ID or alias, which remains unchanged during rotation, so the endpoint continues to encrypt new data with the latest backing key and can decrypt older data using the previous key material. This mechanism is transparent to the endpoint and requires no configuration changes.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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.
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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: Enable automatic key rotation on the existing KMS key — AWS KMS supports automatic key rotation, which creates new backing keys annually while retaining the same key ID and metadata. This ensures that the SageMaker endpoint continues to use the same KMS key alias and configuration, so no endpoint update or downtime is required. Automatic rotation satisfies the compliance requirement without any manual intervention or endpoint recreation.
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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