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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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 all of the requirements?
Correct Answer:
A
This question pertains to theVisualization and Reportingdomain, focusing on the process of building a reporting deck. After meeting requirements (tracking metrics, visualizing data, and row-level security), the next step involves validation with stakeholders.
✑ Show a mock-up to the team (Option A): Creating a mock-up and presenting it to
the team ensures alignment on design and functionality before finalizing, which is a standard next step in report development.
✑ Explain the desired level of reporting detail (Option B): This should have been
done earlier during requirements gathering, not after meeting them.
✑ Present an analysis of the data (Option C): Data analysis might inform the deck, but the task focuses on building the deck, not presenting analysis.
✑ Find out the project due date (Option D): The due date should have been established earlier in the project planning phase.
The DA0-002 Visualization and Reporting domain includes "translating business requirements to form the appropriate visualization," and showing a mock-up ensures the reporting deck meets stakeholder expectations.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 4.0 Visualization and Reporting.
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A data analyst is creating a new dataset that involves bringing together the following datasets:
Name ID
Date of birth
Frank 23525
3/19
Martha 11290
6/13
Ellen 12141
11/4
ID
Address City State 23525
1234 Harding Chicago
IL 11040
935 Terrace Hills Chino
CA 11290
2 Speedway Miami
FL
Which of the following would be the output if the data analyst does a FULL JOIN?
Correct Answer:
D
This question falls under theData Concepts and Environmentsdomain, focusing on database operations like joins. A FULL JOIN combines all rows from both tables, including matches and non-matches, filling in NULLs where there??s no corresponding data.
✑ The first table has IDs: 23525 (Frank), 11290 (Martha), 12141 (Ellen).
✑ The second table has IDs: 23525, 11040, 11290.
✑ A FULL JOIN includes all IDs: 23525, 11290, 12141, 11040.
✑ Option A: Incorrect; it includes a row for Ellen with "2 Speedway," but Ellen??s ID (12141) doesn??t match any address, and 11040 is missing.
✑ Option B: Identical to Option A, so incorrect for the same reasons.
✑ Option C: Incorrect; it mismatches addresses (e.g., Ellen with 935 Terrace Hills, which belongs to 11040).
✑ Option D: Correct; it includes all IDs, with NULLs for non-matching rows (Ellen has no address, and 11040 has no name).
The DA0-002 Data Concepts and Environments domain includes understanding "data schemas and dimensions," such as performing joins in relational databases.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 1.0 Data Concepts and Environments.
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A data analyst encounters an issue with new software and a code that they are using. The analyst includes print statements in the code to try to identify the issue, without success. An informal peer review of the code also produces the same result. The analyst confirms that the software is updated to the latest version and compatible with the code. Which of the following troubleshooting steps should the analyst take next?
Correct Answer:
D
This question pertains to theData Governancedomain, focusing on troubleshooting andmaintaining data quality in software processes. The analyst has already tried basic debugging and confirmed compatibility, so the next step involves seeking external resources.
✑ Use the old software and preexisting code, since both were functional (Option A):
Reverting to old software avoids solving the issue and may introduce other risks (e.g., security vulnerabilities).
✑ Contact the IT department and inform them that the software has a bug (Option B):
Assuming a bug without further investigation is premature, especially since compatibility was confirmed.
✑ Escalate to the department manager and ask for assistance (Option C): Escalation
is a later step after exhausting technical troubleshooting options.
✑ Research the issue online and see if a solution is available (Option D): Researching online (e.g., forums, documentation) is a logical next step to find solutions or identify known issues, especially after local debugging fails.
The DA0-002 Data Governance domain includes "data quality control concepts," and researching online is a standard troubleshooting step to maintain data process integrity. Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 5.0 Data Governance.
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Which of the following is found in metadata?
Correct Answer:
D
This question pertains to theData Concepts and Environmentsdomain, focusing on the content of metadata. Metadata describes data attributes, and the task is to identify what it typically includes.
✑ Transformations (Option A): Transformations (e.g., data cleaning steps) are part of data lineage, not metadata.
✑ Data lineage (Option B): Data lineage tracks data flow and transformations, which is related to metadata but not a direct component.
✑ Syntax (Option C): Syntax refers to code structure, not a metadata component.
✑ Variable types (Option D): Metadata includes information about data fields, such as variable types (e.g., integer, string), which is a standard component.
The DA0-002 Data Concepts and Environments domain includes understanding "data schemas and dimensions," and metadata typically contains details like variable types to describe the dataset.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 1.0 Data Concepts and Environments.