DA0-002 by CompTIA Actual Free Exam Q&As

Question 1

A financial firm gives an analyst a set of requirements for a sales dashboard. The analyst creates a product using sample data and other components to show the firm how the product will most likely look. Which of the following best explains the analyst's approach?

A. Developing a sample dashboard to show the level of detail required for the product B. Designing a mock-up to gather feedback and ensure requirements are understood C. Ensuring that all of the colors and graphics align with the firm's requirements D. Creating an accessibility product to ensure the firm can access the sales dashboard

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Correct Answer: B Vote an answer

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Question 2

Which of the following data repositories should a company use when structured data about the whole company needs to be stored in a predefined data structure?

A. Data lake B. Data warehouse C. Data mart D. Data silo

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Correct Answer: B Vote an answer

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Question 3

A data analyst is cleaning up a data set that contains images. The analysts wants to keep everything that was produced within the last 12 months. Which of the following best describes where the analyst should check for the date of creation on these products?

A. The folder creation date on the filesystem B. The data set creation date on the database C. The metadata of each item in the data set D. The data dictionary of the data set

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Correct Answer: C Vote an answer

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Question 4

A data analyst worked on a project that contained medical content and a list of requirements.
Which of the following are most likely the reasons the privacy team flagged the analyst's report?
(Choose two.)

A. The exclusion of data occurred only after a participant invoked a right to withdraw. B. The directive did not mention that it was vital for PHI to be encrypted in the data set. C. The collection of data was stored according to protocols that are too strict. D. The practice of data masking was irreversible and all PII was lost. E. The retention policy did not allow data to be used beyond one year after the project. F. The method used to anonymize identifying values in the data was insufficient.

Discussion 0

Correct Answer: B,F Vote an answer

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Question 5

A data analyst wants to analyze sales data for possible customer patterns. Which of the following should the analyst use to complete this task?

A. Merging B. Scaling C. Standardizing D. Clustering

Discussion 0

Correct Answer: D Vote an answer

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Question 6

A data analyst wants to isolate a serial number from a string of code. Which of the following data transformation techniques should the analyst use?

A. Merging B. Parsing C. Appending D. Exploding

Discussion 0

Correct Answer: B Vote an answer

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Question 7

An analyst compiled data on the preferred color of various models of cars over a period of time.
Which of the following visualizations is best way to present this information?

A. Bubble chart B. Line graph C. Heat map D. Stacked chart

Discussion 0

Correct Answer: D Vote an answer

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Question 8

A Chief Executive Officer (CEO) reviews the results of a sales report and notices that the company's performance decreased in the last quarter. The CEO needs additional information to understand the reason. Which of the following is the best analysis method for a data analyst to use?

A. Predictive B. Prescriptive C. Diagnostic D. Descriptive

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Correct Answer: C Vote an answer

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Question 9

A data analyst calculated the average score per student without making any changes to the following table:

Which of the following exploration techniques should the analyst have considered before calculating the average?

A. Duplication B. Grouping C. Binning D. Redundancy

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Correct Answer: A Vote an answer

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Question 10

Which of the following programming languages are the most efficient at performing data mining and statistical analysis? (Choose two.)

A. Java B. Python C. Julia D. Ruby E. C++ F. R

Discussion 0

Correct Answer: B,F Vote an answer

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CompTIA Data+ - DA0-002 Exam Practice Test