Which of the following best describes the reason an analyst would reference a data dictionary versus a source's metadata?
Correct Answer:B
This question is part of theData Concepts and Environmentsdomain, focusing on the purpose of data documentation tools like data dictionaries and metadata. The question compares their uses.
✑ To gather information and resources about the data (Option A): This is too vague
and not specific to a data dictionary??s purpose.
✑ To find the content and specific attributes for a dataset (Option B): A data dictionary provides detailed definitions of data elements (e.g., field names, types, descriptions), which is more specific than metadata, which often includes broader information like creation date or source.
✑ To find a summary of basic information about the dataset (Option C): This better describes metadata, which provides high-level summaries, not detailed attributes.
✑ To gather information about the availability of the data (Option D): Neither a data dictionary nor metadata typically focuses on data availability.
The DA0-002 Data Concepts and Environments domain includes understanding "data schemas and dimensions," and a data dictionary is specifically used to find detailed attributes of a dataset.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 1.0 Data Concepts and Environments.
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Which of the following pieces of information, if made public, results in a data privacy violation?
Correct Answer:B
This question falls under theData Governancedomain, which in DA0-002 includes understanding data privacy and compliance with regulations like GDPR. The question asks which piece of information, if made public, constitutes a privacy violation, meaning it must be personally identifiable information (PII).
✑ Gender (Option A): Gender is not typically considered PII on its own, as it??s not
uniquely identifiable.
✑ Driver's license (Option B): A driver??s license number is PII because it uniquely identifies an individual and can be linked to other personal information, such as name and address. Making it public violates privacy regulations.
✑ Age (Option C): Age alone isn??t PII, as it??s not uniquely identifiable.
✑ Employment status (Option D): Employment status (e.g., employed, unemployed) isn??t PII, as it doesn??t uniquely identify an individual.
The DA0-002 Data Governance domain includes "identifying PII and data privacy concepts," and a driver??s license is a clear example of PII that, if exposed, results in a privacy violation.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 5.0 Data Governance.
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The sales department wants to include the composition of total sales amounts across all three sales channels in a report. Given the following sample sales table:
Sales channel
Month
Sales (million $)
Digital January 135
Store February 145
Online March 165
Store April 200
Store May 125
Online June 155
Digital July 120
Online August 145
Digital September 160
Which of the following visualizations is the most appropriate?
Correct Answer:B
This question pertains to theVisualization and Reportingdomain, focusing on selecting the appropriate visualization for a specific requirement. The task is to show the composition of total sales across three channels, which involves showing proportions.
✑ Pivot table (Option A): A pivot table summarizes data but isn??t a visualization; it??s
more for data exploration.
✑ Pie chart (Option B): A pie chart shows the proportion of total sales for each channel (Digital, Store, Online), which is ideal for displaying composition.
✑ KPI card (Option C): A KPI card displays a single metric, not suitable for showing composition across multiple channels.
✑ Box plot (Option D): A box plot shows data distribution (e.g., quartiles), not proportions.
The DA0-002 Visualization and Reporting domain emphasizes "translating business requirements to form the appropriate visualization," and a pie chart is best for showing the composition of totals.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 4.0 Visualization and Reporting.
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A data analyst needs to modify a dashboard that was created by another employee. Upon opening the dashboard, the analyst notices that the information is not loading properly. Which of the following should the analyst do to troubleshoot this error?
Correct Answer:A
This question falls under theData Governancedomain of CompTIA Data+ DA0-002, focusing on troubleshooting data quality issues in dashboards. The dashboard isn??t loading properly, indicating a potential issue with the data connection or configuration.
✑ Review the data layer and data source (Option A): The data layer (e.g., queries,
connections) and data source (e.g., database) are the foundation of a dashboard. If the information isn??t loading, the issue likely lies in the data connection or query configuration, making this the first step.
✑ Validate that the database is up-to-date (Option B): While this might be a
subsequent step, it assumes the connection is working, which should be confirmed first.
✑ Check that the program is updated to the latest version (Option C): Software
updates might fix bugs, but this isn??t the most immediate cause of data not loading.
✑ Ensure the correct filters are displaying on the dashboard (Option D): Filters affect data display, but if the data isn??t loading at all, the issue is more fundamental.
The DA0-002 Data Governance domain includes "data quality control concepts," and reviewing the data layer and source is the primary step in troubleshooting dashboard loading issues.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 5.0 Data Governance.
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A data analyst is generating a custom report for a Chief Executive Officer's executive meeting. Later, the analyst learns that other custom reports will be required for future executive meetings. Which of the following delivery methods should the analyst use?
Correct Answer:C
This question falls under theVisualization and Reportingdomain of DA0-002, which involves selecting appropriate delivery methods for reports. The scenario describes a need for custom reports for future executive meetings, implying a scheduled, repeated delivery.
✑ Ad hoc (Option A): Ad hoc reports are generated on-demand for one-time use, not
suitable for ongoing needs.
✑ Real-time (Option B): Real-time delivery provides live data updates, which isn??t necessary for scheduled executive meetings.
✑ Recurring (Option C): Recurring delivery involves scheduling reports to be generated and delivered at regular intervals (e.g., weekly or monthly), which fits the need for future executive meetings.
✑ Self-service (Option D): Self-service allows users to generate reports themselves, but the scenario implies the analyst will create the reports.
The DA0-002 Visualization and Reporting domain includes understanding "the appropriate visualization in the form of a report" with delivery methods , and recurring delivery aligns with scheduled reporting needs.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 4.0 Visualization and Reporting
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