DA0-002 Exam Training Practice Tests (CompTIA Data+)]

Question 1

Which of the following is a flat file data format?

A. JSON B. CSV C. XML D. HTML

Correct Answer: B

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Question 2

Which of the following best describes the function of a data type?

A. To identify the program needed to open a file B. To differentiate the real value of the field in its context C. To make the addition of individual records simpler D. To provide a generic identifier for files used in analysis

Correct Answer: B

Question 3

Which of the following allows the transfer of isolated applications to multiple environments?

A. Virtualization B. Continuous integration C. Containerization D. Version control

Correct Answer: C

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Question 4

A data analyst is creating a user sentiment analysis for a new product. Which of the following is the best method to acquire the data?

A. Surveying customers B. Sampling sources C. Querying databases D. Downloading open data

Correct Answer: A

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Question 5

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. Prescriptive B. Predictive C. Diagnostic D. Descriptive

Correct Answer: C

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Question 6

Which of the following best describes a characteristic of a Boolean?

A. Must be a character B. Must be numeric C. Must be two values only D. Must be system-created

Correct Answer: C

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Question 7

While interacting with a data set. a data analyst learns that copies of the data are distributed across several data repositories around the globe. Which of the following concepts best describes this practice?

A. Duplication B. High availability C. Replication D. Redundancy

Correct Answer: C

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Question 8

Which of the following data repositories stores unformatted data in its original, raw form?

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

Correct Answer: C

Question 9

A data analyst must combine service calls into low-, medium-, and high-priority levels in order to analyze organizational responses. Which of the following techniques should the analyst use for this task?

A. Augmentation B. Binning C. Imputation D. Scaling

Correct Answer: B

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Question 10

A data analyst is creating a statistical table that contains basic information about the data set.
Which of the following is the best statistical method for this scenario?

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

Correct Answer: D

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Question 11

An analyst is creating a presentation for a corporate meeting. Which of the following is the most important consideration?

A. Knowing the audience B. Dynamic storytelling C. Engaging visuals D. Level of detail

Correct Answer: A

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Question 12

A data analyst receives a report from a dashboard user stating that their report is taking longer than usual to load. The user needs five components for the dashboard. However, upon investigating, the analyst notices ten components that are attempting to load. Which of the following steps should the analyst take to correct this issue?

A. Check the refresh rate on the report server. B. Check with the network team for stale network connections. C. Check the filters to include only the required information. D. Check with administrators to review the logs of the report server.

Correct Answer: C

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Question 13

Which of the following tools would a data analyst most likely use to modify a simple data connection property in a configuration file?

A. SSMS B. Toad C. Notepad++ D. RStudio

Correct Answer: C

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Question 14

A grocery store wants to view the revenue from the previous year, highlighting individual departments. Which of the following is the most appropriate chart to communicate this information?

A. Line B. Pie C. Gantt D. Area

Correct Answer: D

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Question 15

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. Standardizing B. Clustering C. Merging D. Scaling

Correct Answer: B

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CompTIA Data+ - DA0-002 Exam Practice Test