CompTIA DY0-001 Exam Dumps

Get All CompTIA DataAI Certification Exam Questions with Validated Answers

DY0-001 Pack
Vendor: CompTIA
Exam Code: DY0-001
Exam Name: CompTIA DataAI Certification Exam
Exam Questions: 85
Last Updated: May 11, 2026
Related Certifications: CompTIA DataAI
Exam Tags: Expert Data ScientistsMachine Learning Engineers
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Free CompTIA DY0-001 Exam Actual Questions

Question No. 1

The following graphic shows the results of an unsupervised, machine-learning clustering model:

k is the number of clusters, and n is the processing time required to run the model. Which of the following is the best value of k to optimize both accuracy and processing requirements?

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Correct Answer: B

The curve shows a steep drop in processing time up to about k = 10, after which gains in speed taper off. Choosing 10 clusters balances sufficient model complexity with reasonable computational cost.


Question No. 2

Which of the following distance metrics for KNN is best described as a straight line?

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Correct Answer: B

Euclidean distance measures the straight-line distance between two points in space, matching the geometric ''as-the-crow-flies'' notion of distance.


Question No. 3

Which of the following is best solved with graph theory?

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Correct Answer: B

The traveling-salesman problem is a prototypical graph theory challenge, finding the shortest tour through a graph's nodes, whereas the other tasks rely on different domains (OCR on image processing, fraud detection often on statistical/anomaly methods, bandit problems on sequential decision theory).


Question No. 4

A model's results show increasing explanatory value as additional independent variables are added to the model. Which of the following is the most appropriate statistic?

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Correct Answer: A

Adjusted R accounts for the number of predictors in the model, only increasing when a new independent variable adds genuine explanatory power beyond what random chance would predict. In contrast, plain R will always rise (or stay the same) as you add more variables, regardless of their true relevance.


Question No. 5

A data scientist is deploying a model that needs to be accessed by multiple departments with minimal development effort by the departments. Which of the following APIs would be best for the data scientist to use?

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Correct Answer: D

RESTful APIs use standard HTTP methods and lightweight data formats (typically JSON), making them easy for diverse teams to integrate with minimal effort and without heavy tooling.


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