The answer is to create a new endpoint configuration with the updated model and then update the existing SageMaker endpoint to use that new configuration, which triggers a built-in blue/green deployment. This approach minimizes downtime because SageMaker automatically routes traffic to the new model instances (green) while keeping the old ones (blue) active, then shifts traffic incrementally and decommissions the old instances only after the new ones are healthy. On the AWS Certified Machine Learning Specialty MLS-C01 exam, this scenario tests your understanding of SageMaker’s deployment mechanics versus manual workarounds; a common trap is choosing to update the endpoint directly or delete and recreate it, both of which cause service interruption. The key insight is that SageMaker’s endpoint update inherently performs a blue/green swap, so you never need an external load balancer for simple model updates. Memory tip: think “new config, same endpoint” — the endpoint stays live while the configuration swaps the fleet.
MLS-C01 Practice Question: Machine Learning Implementation and Operations
This MLS-C01 practice question tests your understanding of machine learning implementation and operations. 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 uses SageMaker to host a model for real-time predictions. The model is updated weekly. To minimize downtime during model updates, what should the company do?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a new endpoint configuration with the new model and update the endpoint to use the new configuration
Option D is correct: Creating a new endpoint configuration with the new model and updating the endpoint with a blue/green deployment minimizes downtime. Option A (delete and recreate) causes downtime. Option B (update endpoint directly) causes brief downtime. Option C (multiple endpoints with load balancer) works but is more complex than SageMaker's built-in blue/green.
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.
✓
Create a new endpoint configuration with the new model and update the endpoint to use the new configuration
Why this is correct
SageMaker supports blue/green deployment by updating endpoint to new configuration, minimizing downtime.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a second endpoint with the new model and use an Application Load Balancer to route traffic
Why it's wrong here
This works but is more complex than necessary.
✗
Update the existing endpoint configuration with the new model URL
Why it's wrong here
Updating endpoint configuration causes a brief downtime while the endpoint is updated.
✗
Delete the existing endpoint and create a new one with the updated model
Why it's wrong here
This causes downtime during deletion and creation.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 MLS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Machine Learning Implementation and Operations — This question tests Machine Learning Implementation and Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a new endpoint configuration with the new model and update the endpoint to use the new configuration — Option D is correct: Creating a new endpoint configuration with the new model and updating the endpoint with a blue/green deployment minimizes downtime. Option A (delete and recreate) causes downtime. Option B (update endpoint directly) causes brief downtime. Option C (multiple endpoints with load balancer) works but is more complex than SageMaker's built-in blue/green.
What should I do if I get this MLS-C01 question wrong?
Identify which MLS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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