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DY0-001 Exam Dumps : CompTIA DataX Exam

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CompTIA DataX Exam Questions and Answers

Question 1

A data scientist is standardizing a large data set that contains website addresses. A specific string inside some of the web addresses needs to be extracted. Which of the following is the best method for extracting the desired string from the text data?

Options:

A.

Regular expressions

B.

Named-entity recognition

C.

Large language model

D.

Find and replace

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Question 2

A movie production company would like to find the actors appearing in its top movies using data from the tables below. The resulting data must show all movies in Table 1, enriched with actors listed in Table 2.

Which of the following query operations achieves the desired data set?

Options:

A.

Perform an INNER JOIN between Table 1 using column Movie, and Table 2 using column Acted_In.

B.

Perform a UNION between Table 1 using column Movie, and Table 2 using column Acted_In.

C.

Perform an INTERSECT between Table 1 using column Movie, and Table 2 using column Acted_In.

D.

Perform a LEFT JOIN on Table 1 using column Movie, with Table 2 using column Acted_In.

Question 3

A data scientist is working with a data set that has ten predictors and wants to use only the predictors that most influence the results. Which of the following models would be the best for the data scientist to use?

Options:

A.

OLS

B.

Ridge

C.

Weighted least squares

D.

LASSO