Question 1

How does Amazon Personalize improve customer engagement?

Options :

A : By identifying potentially fraudulent activities in real-time.

B : By providing highly accurate demand forecasts.

C : By making it easy to build, train, and deploy recommendation models.

D : By converting text into lifelike speech.

Answer: C

Question 2

A company that promotes healthy sleep patterns by providing cloud-connected devices currently hosts a sleep tracking application on AWS.The application collects device usage information from device users.The company's Data Science team is building a machine learning model to predict if and when a user will stop utilizing the company's devices.Predictions from this model are used by a downstream application that determines the best approach for contacting users.The Data Science team is building multiple versions of the machine learning model to evaluate each version against the company's business goals.To measure long-term effectiveness, the team wants to run multiple versions of the model in parallel for long periods of time, with the ability to control the portion of inferences served by the models.Which solution satisfies these requirements with MINIMAL effort?

Options :

A : Build and host multiple models in Amazon SageMaker. Create an Amazon SageMaker endpoint configuration with multiple production variants. Programmatically control the portion of the inferences served by the multiple models by updating the endpoint configuration.

B : Build and host multiple models in Amazon SageMaker. Create a single endpoint that accesses multiple models. Use Amazon SageMaker batch transform to control invoking the different models through the single endpoint.

C : Build and host multiple models in Amazon SageMaker Neo to take into account different types of medical devices. Programmatically control which model is invoked for inference based on the medical device type.

D : Build and host multiple models in Amazon SageMaker. Create multiple Amazon SageMaker endpoints, one for each model. Programmatically control invoking different models for inference at the application layer.

Answer: B

Question 3

A real estate company wants to create a machine learning model for predicting housing prices based on a historical dataset. The dataset contains 32 features. Which model will meet the business requirement?

Options :

A : Linear regression

B : K-means

C : Logistic regression

D : Principal component analysis (PCA)

Answer: A

Question 4

Why is explainability important in some contexts?

Options :

A : It improves the model-s accuracy

B : It enhances the model-s speed

C : It reduces the amount of training data needed

D : It ensures that decisions can be justified and understood

Answer: D

Question 5

What is a key advantage of a complex machine learning model?

Options :

A : Speed of data processing

B : High accuracy

C : Low computational requirements

D : High explainability

Answer: B

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