MLA-C01 Practice Question: Refer to the exhibit

Exhibit

{
  "EndpointConfigName": "my-config",
  "ProductionVariants": [
    {
      "VariantName": "variant1",
      "ModelName": "my-model-v1",
      "InitialInstanceCount": 1,
      "InstanceType": "ml.c5.large",
      "InitialVariantWeight": 1.0
    }
  ]
}

Refer to the exhibit. The data scientist wants to update the endpoint to use a new model version without downtime. Which approach should they use?

⚠ Common exam trap

Many candidates confuse 'updating the endpoint' with 'modifying the existing configuration directly' (Option B), not realizing that SageMaker enforces immutability of endpoint configurations and requires a new configuration to change the model or variant.

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

✓

Create a new endpoint configuration with a second variant and update the endpoint

It uses SageMaker's blue/green deployment pattern: creating a new endpoint configuration with a second variant (the new model version) and updating the endpoint shifts traffic gradually or instantly without downtime. This approach leverages the endpoint's ability to host multiple variants and route traffic between them, ensuring zero interruption during the update.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
Delete the existing endpoint and create a new one
Why it's wrong here
This causes downtime during deletion and recreation.
✗
Update the endpoint's model name directly
Why it's wrong here
Endpoint configurations are immutable; you cannot change the model name in a deployed configuration.
✓
Create a new endpoint configuration with a second variant and update the endpoint
Why this is correct
This allows a blue/green deployment with zero downtime by shifting traffic gradually or instantly.
✗
Use SageMaker Model Monitor to automatically switch
Why it's wrong here
Model Monitor is for monitoring, not for updating endpoints.

Go deeper

MLA-C01 Practice Question: Refer to the exhibit

Exhibit

Why each option matters

Option-by-option breakdown

Related to this question