Free CompTIA DA0-002 Practice Questions & Answers 2026 Part2 | CompTIA Data+

A data analyst pulls a table similar to the following one:ID Type TypeID Phone1 Full Time Full Time 1 Mobile2 Part Time Part Time 2 Work3 Full Time Full Time 3 MobileWhich of the following best explains the data issue with TypeID?

Which of the following best describes the method used to combine files, software, and libraries for use on various operating systems and environments? This question pertains to the Data Concepts and Environments domain, focusing on methods for managing software and data environments. The task is to identify a method that combines files, software, and libraries for use across different systems. Package manager (Option A): Package managers (e.g., npm) manage software dependencies but don't combine files and libraries for cross-system use. Code repository (Option B): Code repositories (e.g., GitHub) store code but don't package it for deployment across environments. Virtual machine (Option C): Virtual machines emulate entire operating systems, which is heavier than needed for combining files and libraries. Containerization (Option D): Containerization (e.g., Docker) packages files, software, and libraries into a container that can run consistently across different operating systems and environments, making it the best choice. The DA0-002 Data Concepts and Environments domain includes understanding 'data environments,' and containerization is a standard method for ensuring consistency across systems. ==============

[Visualization and Reporting]A data analyst is designing a report for the business review team. The team lists the following requirements for the report:Specific data pointsColor brandingLabels and terminologySuggested charts and tablesWhich of the following components is missing from the requirements?

Which of the following best describes the purpose of a primary key?

[Data Acquisition and Preparation]A data analyst receives four files that need to be unified into a single spreadsheet for furtheranalysis. All of the files have the same structure, number of columns, and field names, but each filecontains different values. Which of the following methods will help the analyst convert the files intoa single spreadsheet?

[Data Analysis]A data analyst team needs to segment customers based on customer spending behavior. Given onemillion rows of data like the information in the following sales order table:Customer_IDRegionAmount_spentProduct_categoryQuantity_of_items00123East20000Baby00124West30000Home00125South40000Garden00126North50000Furniture00127East60000BabyWhich of the following techniques should the team use for this task?

A data analyst receives four files that need to be unified into a single spreadsheet for further analysis. All of the files have the same structure, number of columns, and field names, but each file contains different values.Which of the following methods will help the analyst convert the files into a single spreadsheet?

A data analyst is joining two tables with different content and one common field.Which of the following should the analyst do to most efficiently meet this requirement?

Which of the following best describes the reason an analyst would reference a data dictionary versus a source's metadata?

A data analyst receives a notification that a customized report is taking too long to load. After reviewing the system, the analyst does not find technical or operational issues.Which of the following should the analyst try next?

Which of the following pieces of information, if made public, results in a data privacy violation?

A data analyst is joining two tables with different content and one common field.Which of the following should the analyst do to most efficiently meet this requirement?

Which of the following is the best tool for creating a dynamic dashboard?

[Data Concepts and Environments]Which of the following best describes the reason an analyst would reference a data dictionary versusa source's metadata?

A data analyst receives a request for the current employee head count and runs the following SQL statement:SELECT COUNT(EMPLOYEE_ID) FROM JOBSThe returned head count is higher than expected because employees can have multiple jobs.Which of the following should return an accurate employee head count?

[Data Acquisition and Preparation]A data analyst is joining two tables with different content and one common field. Which of thefollowing should the analyst do to most efficiently meet this requirement?

An analyst must use the same data to create reports for police patrol supervisors, the city council, and a public website. Which of the following is the best way to differentiate the reports?

Which of the following best describes the reason an analyst would reference a data dictionary versus a source's metadata?

Which of the following is found in metadata?

Which of the following best describes the semi-structured data that is gathered when web scraping?

[Data Concepts and Environments]A data analyst is creating a new dataset that involves bringing together the following datasets:NameIDDate of birthFrank235253/19Martha112906/13Ellen1214111/4IDAddressCityState235251234 HardingChicagoIL11040935 Terrace HillsChinoCA112902 SpeedwayMiamiFLWhich of the following would be the output if the data analyst does a FULL JOIN?

[Visualization and Reporting]Which of the following is the best tool for creating a dynamic dashboard?

Given the diagram below: Which of the following types of sampling is depicted in the image?

A manager requests a report that returns results based on a user's profile. Which of the following best describes this type of report?

A data analyst pulls a table similar to the following one:ID Type TypeID Phone1 Full Time Full Time 1 Mobile2 Part Time Part Time 2 Work3 Full Time Full Time 3 MobileWhich of the following best explains the data issue with TypeID?

[Data Concepts and Environments] 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?

[Data Concepts and Environments]Which of the following best describes the reason an analyst would reference a data dictionary versus a source's metadata?

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

[Data Analysis]A data analyst wants to use the following tables to find all the customers who have not placed an order:Customers table IDName AddressProducts table IDName Customer_IDWhich of the following SQL statements is the best way to accomplish this task?

A data analyst receives a notification that a customized report is taking too long to load. After reviewing the system, the analyst does not find technical or operational issues.Which of the following should the analyst try next?

A data analyst receives the following sales data for a convenience store: The analyst needs to provide information on the products that contain chocolate. Which of the following RegEx should the analyst use to filter for the chocolate products?

An analyst is building a reporting deck. The deck must include tracking and visualizing metrics and row-level security. Which of the following actions should the analyst take after meeting the initial requirements?

A data analyst is evaluating all conditions in a query. Which of the following is the best logical function to accomplish this task?

An analyst must use the same data to create reports for police patrol supervisors, the city council, and a public website. Which of the following is the best way to differentiate the reports?

A data analyst receives the following sales data for a convenience store:Item Quantity PriceChocolate Bars 7 $1.99Vanilla Ice Bars 2 $4.99Chocolate Wafers 6 $0.99Peanut Butter 2 $2.99Cups 3 $4.99Strawberry Jam 3 $4.99Chocolate Cake 9 $6.99Milk Chocolate 2 $2.99Almonds 5 $2.99The analyst needs to provide information on the products that contain chocolate.Which of the following RegEx should the analyst use to filter the chocolate products?

An analyst is building a reporting deck. The deck must include tracking and visualizing metrics and row-level security. Which of the following actions should the analyst take after meeting the initial requirements?

A data analyst is analyzing the following data set:Which of the following methods should the analyst use to determine the total cost for each transaction?

Which of the following pieces of information, if made public, results in a data privacy violation?

A data analyst is joining two tables with different content and one common field.Which of the following should the analyst do to most efficiently meet this requirement?

[Data Concepts and Environments]A data analyst pulls a table similar to the following one:IDTypeTypeIDPhoneFull TimeFull Time 1MobilePart TimePart Time 2WorkFull TimeFull Time 3MobileWhich of the following best explains the data issue with TypeID?

A data analyst pulls a table similar to the following one:ID Type TypeID Phone1 Full Time Full Time 1 Mobile2 Part Time Part Time 2 Work3 Full Time Full Time 3 MobileWhich of the following best explains the data issue with TypeID?

Which of the following best describes the reason an analyst would reference a data dictionary versus a source's metadata?

A data analyst receives a notification that a customized report is taking too long to load. After reviewing the system, the analyst does not find technical or operational issues.Which of the following should the analyst try next?

A data breach occurs at a company. Which of the following actions should be taken?

A data analyst needs to identify outliers from a given dataset. Which of the following visualizations is the best way to identify outliers? This question falls under the Visualization and Reporting domain, focusing on selecting the appropriate visualization to identify outliers in a dataset. Box plot (Option A): A box plot displays the distribution of data, including the median, quartiles, and outliers (data points beyond the whiskers), making it the best choice for identifying outliers. Scatter plot (Option B): A scatter plot shows relationships between two variables, and while outliers may be visible, it's not specifically designed for outlier detection. Gantt chart (Option C): Gantt charts are for project scheduling, not suitable for outlier identification. Waterfall chart (Option D): Waterfall charts show cumulative changes (e.g., financial contributions), not designed for outlier detection. The DA0-002 Visualization and Reporting domain emphasizes 'translating business requirements to form the appropriate visualization,' and a box plot is the standard visualization for identifying outliers. ==============

A data analyst is joining two tables with different content and one common field.Which of the following should the analyst do to most efficiently meet this requirement?

A complex report is being created from a database. Within the database the storage location of the orders, packaging, and logistics details is unclear. The table's attributes names are abbreviated and not easily identifiable. Which of the following types of documentation would be most useful for reference lookup?

A data analyst is modeling a new data warehouse to analyze sales. One of the requirements is to analyze sales by region. Which of the following best describes the region table?

A data analyst creates a report, and some of the fields are empty. Which of the following conditions should the analyst add to a query to provide a list of all the records with empty fields?

A manager wants to use the information in a recurring report on incomplete timesheets for the prior month to guide employee outreach.Which of the following report types is the best for this task?