Download CompTIA DataX Exam.DY0-001.ExamTopics.2025-06-10.82q.vcex

Vendor: CompTIA
Exam Code: DY0-001
Exam Name: CompTIA DataX Exam
Date: Jun 10, 2025
File Size: 481 KB

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Demo Questions

Question 1
Which of the following issues should a data scientist be most concerned about when generating a synthetic data set?
  1. The data set consuming too many resources
  2. The data set having insufficient features
  3. The data set having insufficient row observations
  4. The data set not being representative of the population
Correct answer: D
Question 2
A data scientist needs to:
  • Build a predictive model that gives the likelihood that a car will get a flat tire.
  • Provide a data set of cars that had flat tires and cars that did not.
All the cars in the data set had sensors taking weekly measurements of tire pressure similar to the sensors that will be installed in the cars consumers drive. Which of the following is the most immediate data concern?
  1. Granularity misalignment
  2. Multivariate outliers
  3. Insufficient domain expertise
  4. Lagged observations
Correct answer: D
Question 3
The term "greedy algorithms" refers to machine-learning algorithms that:
  1. update priors as more data is seen.
  2. examine every node of a tree before making a decision.
  3. apply a theoretical model to the distribution of the data.
  4. make the locally optimal decision.
Correct answer: D
Question 4
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?
  1. SOAP
  2. RPC
  3. JSON
  4. REST
Correct answer: D
Question 5
Which of the following compute delivery models allows packaging of only critical dependencies while developing a reusable asset?
  1. Thin clients
  2. Containers
  3. Virtual machines
  4. Edge devices
Correct answer: B
Question 6
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?
  1. n-grams
  2. NER
  3. TF-IDF
  4. POS
Correct answer: A
Question 7
Which of the following belong in a presentation to the senior management team and/or C-suite executives? (Choose two.)
  1. Full literature reviews
  2. Code snippets
  3. Final recommendations
  4. High-level results
  5. Detailed explanations of statistical tests
  6. Security keys and login information
Correct answer: C
Question 8
During EDA, a data scientist wants to look for patterns, such as linearity, in the data. Which of the following plots should the data scientist use?
  1. Violin
  2. Box-and-whisker
  3. Scatter
  4. Q-Q
Correct answer: C
Question 9
Which of the following distribution methods or models can most effectively represent the actual arrival times of a bus that runs on an hourly schedule?
  1. Binomial
  2. Exponential
  3. Normal
  4. Poisson
Correct answer: C
Question 10
A data scientist has constructed a model that meets the minimum performance requirements specified in the proposal for a prediction project. The data scientist thinks the model's accuracy should be improved, but the proposed deadline is approaching. Which of the following actions should the data scientist take first?
  1. Continue collecting data.
  2. Request additional funding.
  3. Consult the key project stakeholder.
  4. Test additional model specifications.
Correct answer: C
Question 11
Which of the following best describes the minimization of the residual term in a ridge linear regression?
  1. |e|
  2. e
  3. e2
  4. 0
Correct answer: C
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