First-hand CompTIA DA0-002 Valid Test Papers: CompTIA Data+ Exam | Valid Test DA0-002 Test

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CompTIA DA0-002 Exam Syllabus Topics:

TopicDetails
Topic 1
  • 5.0 Data Governance, Quality, and Controls
Topic 2
  • Data Concepts and Environments: This section of the exam measures the skills of a Junior Data Analyst and focuses on understanding core data concepts such as database types, schema structures, and data formats. It highlights differences between structured and unstructured data, compares file types like CSV, JSON, and XML, and introduces key ideas about data dimensions and slowly changing dimensions. Knowing how data is stored and organized helps professionals better prepare for analysis and reporting tasks.
Topic 3
  • Visualization: This section of the exam measures skills of a Data Visualisation Specialist and focuses on turning raw data into clear, visual insights. It teaches how to match visual formats like bar charts, heat maps, and line graphs to specific audiences and needs. Candidates must understand how to create dashboards and reports using proper design elements such as labels, layout, branding, and colour schemes. This section also includes best practices for dashboard development and delivery through various platforms and user access levels.
Topic 4
  • Data Mining: This section of the exam measures skills of a Business Intelligence Analyst and covers how data is collected, cleaned, and prepared for analysis. It explains methods like ETL and ELT for data integration, as well as web scraping, API use, and survey data collection. Candidates are expected to identify issues like missing or duplicated data and apply techniques like filtering, sorting, merging, and normalizing. The section also touches on query optimization strategies to improve data handling efficiency.

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CompTIA Data+ Exam Sample Questions (Q62-Q67):

NEW QUESTION # 62
A data analyst needs to identify outliers from a given data set. Which of the following visualizations is the best way to identify outliers?

Answer: C

Explanation:
A box plot is specifically designed to display the distribution of data and highlight outliers. Values that fall significantly above or below the typical range are shown separately from the whiskers, making outliers easy to identify.


NEW QUESTION # 63
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?

Answer: D

Explanation:
Because each store provides sales data as CSV files, the engineer must first parse the files to extract and structure the data into usable datasets. This step is necessary before the ETL process can aggregate the sales data and calculate average sales for individual stores.


NEW QUESTION # 64
A marketing firm wants to find the average age of its consumers to better promote its products.
Given the following dataset:

Which of the following is the mean of the consumer ages?

Answer: A


NEW QUESTION # 65
Which of the following data integration concepts should be used if only new data is being added to a table since the previous load?

Answer: D

Explanation:
Delta load refers to loading only the new or changed data since the last update, optimizing data integration processes.


NEW QUESTION # 66
Which of the following best represents a type of infrastructure that requires a company to purchase and maintain all of its own servers?

Answer: B

Explanation:
A private infrastructure requires the organization to own, manage, and maintain its own servers and hardware, unlike cloud or hybrid models where resources are shared or hosted externally.


NEW QUESTION # 67
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