CompTIA DataAI v1 Exam (DY0-001) - CompTIA Actual Exam Questions
Last updated on April 15, 2026
A data analyst is analyzing data and would like to build conceptual associations. Which of the following is the best way to accomplish this task?
n-grams
NER
TF-IDF
POS
to join the discussion
No discussions yet. Be the first to ask!
Delete Comment
Are you sure? This action cannot be undone.
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?
Perform an INNER JOIN between Table 1 using column Movie, and Table 2 using column Acted_In.
Perform a UNION between Table 1 using column Movie, and Table 2 using column Acted_In.
Perform an INTERSECT between Table 1 using column Movie, and Table 2 using column Acted_In.
Perform a LEFT JOIN on Table 1 using column Movie, with Table 2 using column Acted_In.
to join the discussion
No discussions yet. Be the first to ask!
Delete Comment
Are you sure? This action cannot be undone.
A data scientist built several models that perform about the same but vary in the number of features. Which of the following models should the data scientist recommend for production according to Occam's razor?
The model with the fewest features and highest performance
The model with the fewest features and the lowest performance
The model with the most features and the lowest performance
The model with the most features and the highest performance
to join the discussion
No discussions yet. Be the first to ask!
Delete Comment
Are you sure? This action cannot be undone.
Which of the following best describes the minimization of the residual term in a ridge linear regression?
|e|
e
e2
0
to join the discussion
No discussions yet. Be the first to ask!
Delete Comment
Are you sure? This action cannot be undone.
A statistician notices gaps in data associated with age-related illnesses and wants to further aggregate these observations. Which of the following is the best technique to achieve this goal?
Label encoding
Linearization
Binning
Imputing
to join the discussion
No discussions yet. Be the first to ask!
Delete Comment
Are you sure? This action cannot be undone.
Finish Practice?
Are you sure you want to finish? This will end your practice session.