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You are working as a data scientist for a healthcare company. They decide to analyze the data to
find patterns in a large volume of electronic medical records. You are asked to build a PySpark
solution to analyze these records in a JupyterLab notebook. What is the order of recommended
steps to develop a PySpark application in Oracle Cloud Infrastructure (OCI) Data Science?
While reviewing your data, you discover that your data set has a class imbalance. You are aware
that the Accelerated Data Science (ADS) SDK provides multiple built-in automatic transformation
tools for data set transformation. Which would be the right tool to correct any imbalance between
the classes?
For your next data science project, you need access to public geospatial images.
Which Oracle Cloud service provides free access to those images?
You are building a model and need input that represents data as morning, afternoon, or evening. However, the data contains a time stamp. What part of the Data Science life cycle would you be in when creating the new variable?
Select two reasons why it is important to rotate encryption keys when using Oracle Cloud
Infrastructure (OCI) Vault to store credentials or other secrets.
