[28/July/2018 Updated] Free Share PassLeader Professional Data Engineer Exam Questions To Help You Pass Exam (Part B)

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NEW QUESTION 16
Why do you need to split a machine learning dataset into training data and test data?

A.    So you can try two different sets of features.
B.    To make sure your model is generalized for more than just the training data.
C.    To allow you to create unit tests in your code.
D.    So you can use one dataset for a wide model and one for a deep model.

[28/July/2018 Updated] PassLeader Valid 80q Professional Data Engineer Exam Dumps with New Added Questions and Answers (Part A)

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NEW QUESTION 1
Suppose you have a table that includes a nested column called “city” inside a column called “person”, but when you try to submit the following query in BigQuery, it gives you an error:
SELECT person FROM `project1.example.table1` WHERE city = “London”
How would you correct the error?

A.    Add “, UNNEST(person)” before the WHERE clause.
B.    Change “person” to “person.city”.
C.    Change “person” to “city.person”.
D.    Add “, UNNEST(city)” before the WHERE clause.