CompTIA CompTIA Data+ DA0-002

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CompTIA DA0-002 Exam Syllabus Topics:

Reference: https://www.comptia.org/en-us/certifications/data/v2/

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CompTIA Data+ Sample Questions:

Question #1
An engineer needs to build an ETL process to calculate the average sales of individual stores.
Each store sends their sales data as .csv files. Which of the following would the engineer most likely do to the data?

A. Parse the files to create individual data sets
B. Convert the values to different data types
C. Impute any missing date values
D. Merge the files with an open-source data set

Question #2
A data analyst receives a new data source that contains employee IDs, job titles, dates of birth, addresses, years of service, and employees' birth months. Which of the following inconsistencies should the analyst identify?

A. Parallel
B. Redundancy
C. Duplication
D. Equivalence

Question #3
A report triggers an error that prevents information from being displayed. However, the report was functional before a database upgrade. Which of the following should a data analyst do first to troubleshoot the problem?

A. Verify the connection to the database.
B. Check whether the data structures were modified.
C. Ensure the system has permissions for the report service.
D. Change the report's refresh rate.

Question #4
Which of the following is a NoSQL database?

A. PostgreSQL
B. Oracle
C. MySQL
D. MongoDB

Question #5
A data analyst is creating a dashboard for a group of visually impaired stakeholders. Which of the following communication approaches is best?

A. Incorporate audio accessibility functions into graphics for all instances of the interface.
B. Present a custom slide presentation with interactive sound effects.
C. Partner with the human resources department to advocate on behalf of the stakeholders.
D. Inform the supervisor that the stakeholders need assistance during the meeting.

Solutions: