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PROFESSIONAL-MACHINE-LEARNING-ENGINEER · Question #187

PROFESSIONAL-MACHINE-LEARNING-ENGINEER Question #187: Real Exam Question with Answer & Explanation

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Submitted by tyler.j· Apr 18, 2026Data processing and feature engineering

Question

You work for a food product company. Your company's historical sales data is stored in BigQuery.You need to use Vertex AI's custom training service to train multiple TensorFlow models that read the data from BigQuery and predict future sales. You plan to implement a data preprocessing algorithm that performs mm-max scaling and bucketing on a large number of features before you start experimenting with the models. You want to minimize preprocessing time, cost, and development effort. How should you configure this workflow?

Options

  • AWrite the transformations into Spark that uses the spark-bigquery-connector, and use Dataproc to
  • BWrite SQL queries to transform the data in-place in BigQuery.
  • CAdd the transformations as a preprocessing layer in the TensorFlow models.
  • DCreate a Dataflow pipeline that uses the BigQuerylO connector to ingest the data, process it, and

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Topics

#BigQuery#Data preprocessing#Feature engineering#Cost optimization
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