Google Cloud Professional Machine Learning Engineer — Question 25

You work for an advertising company and want to understand the effectiveness of your company's latest advertising campaign. You have streamed 500 MB of campaign data into BigQuery. You want to query the table, and then manipulate the results of that query with a pandas dataframe in an AI Platform notebook.
What should you do?

Answer options

• A. Use AI Platform Notebooks' BigQuery cell magic to query the data, and ingest the results as a pandas dataframe.
• B. Export your table as a CSV file from BigQuery to Google Drive, and use the Google Drive API to ingest the file into your notebook instance.
• C. Download your table from BigQuery as a local CSV file, and upload it to your AI Platform notebook instance. Use pandas.read_csv to ingest he file as a pandas dataframe.
• D. From a bash cell in your AI Platform notebook, use the bq extract command to export the table as a CSV file to Cloud Storage, and then use gsutil cp to copy the data into the notebook. Use pandas.read_csv to ingest the file as a pandas dataframe.

Correct answer: A

Explanation

The correct answer is A because using AI Platform Notebooks' BigQuery cell magic is the most efficient way to query data directly and ingest the results as a pandas dataframe without intermediate steps. Options B and C involve unnecessary file exports and uploads, which can complicate the workflow, while D introduces additional steps that could lead to errors and delays.