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CompTIA DA0-001 Exam

Certification Provider: CompTIA
Exam Name: CompTIA Data+ Certification Exam
Number of questions in our database: 215
Exam Version: Feb. 20, 2024
DA0-001 Exam Official Topics:
  • Topic 1: Data Concepts and Environments/ Compare and contrast common data structures and file formats
  • Topic 2: Compare and contrast different data types/ Identify basic concepts of data schemas and dimensions
  • Topic 3: Explain common techniques for data manipulation and query optimization/ Identify common reasons for cleansing and profiling datasets
  • Topic 4: Identify common data analytics tools/ Explain the purpose of inferential statistical methods
  • Topic 5: Explain master data management (MDM) concepts/ Data Governance, Quality, and Controls
  • Topic 6: Given a scenario, execute data manipulation techniques/ Explain data acquisition concepts
  • Topic 7: Given a scenario, apply the appropriate type of visualization/ Given a scenario, use appropriate methods for dashboard development
  • Topic 8: Given a scenario, apply the appropriate descriptive statistical methods/ Summarize important data governance concepts
  • Topic 9: Given a scenario, translate business requirements to form a report/ Compare and contrast types of reports
  • Topic 10: Summarize types of analysis and key analysis techniques/ Application programming interface (API)/web services
  • Topic 11: Application programming interfaces (APIs)/ Determine data needs and sources to perform analysis
  • Topic 12: Use of descriptive statistics to determine observations/ Given a scenario, apply data quality control concepts

Free CompTIA DA0-001 Exam Actual Questions

The questions for DA0-001 were last updated On Feb. 20, 2024

Question #2

An analyst is preparing a report that contains weather dat

a. The temperatures are shown in Fahrenheit. but they must be reported in Celsius. Which of the following should the analyst do to fix this issue?

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Correct Answer: C

The analyst should rescale the data to fix this issue. Rescaling is a process of transforming data from one scale to another, such as changing the units of measurement. In this case, the analyst needs to rescale the temperatures from Fahrenheit to Celsius, which are two different scales for measuring temperature. To do this, the analyst can use the following formula:

Celsius = (Fahrenheit - 32) * 5/9

This formula converts each temperature value from Fahrenheit to Celsius by subtracting 32 and multiplying by 5/9. For example, if the temperature is 68F, the rescaled value in Celsius is:

Celsius = (68 - 32) * 5/9 Celsius = 20C

Rescaling the data can help the analyst to report the temperatures in a consistent and accurate way, and to avoid any confusion or errors that may arise from using different scales. Rescaling can also make the data more comparable and compatible with other data sources or standards that use the same scale12.

Question #3

Which of the following is an example of a flat file?

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Correct Answer: A

A CSV file is a type of flat file that stores data as plain text in a table-like structure with rows and columns. Each row represents a single record, while columns represent fields or attributes of the dat

a. A CSV file uses commas or other delimiters to separate the values in each row.A CSV file can be easily imported or exported by various applications and programs12

Question #4

A financial analyst is creating a daily billing report for a company. One night, the company's data warehouse did not update the data, which caused the data to be reported incorrectly the next day. Which of the following documentation elements should the analyst add to catch this error?

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Question #5

An analyst is creating a resource to improve users' experience when they select specific records based on particular dates. Which of the following should the analyst use to create a resource that best meets user needs?

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Correct Answer: A

A drop-down menu is a graphical user interface element that allows users to select one option from a list of options that are hidden until the user clicks on the menu. A drop-down menu can be used to create a resource that best meets user needs when they select specific records based on particular dates, because:

A drop-down menu can provide a predefined list of dates or date ranges that are relevant and valid for the records, such as today, yesterday, last week, last month, custom range, etc. This can help users to avoid typing errors or invalid dates in a text field, and to save time and effort in entering the dates.

A drop-down menu can also provide a calendar or a date picker that allows users to select a specific date or a range of dates from a graphical representation of a calendar. This can help users to visualize and compare the dates, and to easily adjust or modify their selection.

A drop-down menu can improve the user experience by making the interface more compact and organized, as it only shows one option at a time and hides the rest of the options until the user clicks on the menu. This can help users to focus on their selection and to avoid clutter and distraction.

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