CompTIA DA0-002합격보장가능시험 - DA0-002최신업데이트버전인증시험자료

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CompTIA DA0-002 Exam Syllabus Topics:

SectionWeightObjectives
Data Concepts and Environments20%- Database fundamentals
  • 1. Schemas and data models
  • 2. Cloud and containerized data environments
  • 3. Relational vs. non-relational databases
- Data structures and formats
  • 1. Structured, semi-structured, and unstructured data
  • 2. File types and their use cases
  • 3. Common data formats (JSON, XML, CSV)
- Data types and metadata
  • 1. Metadata and its role in data management
  • 2. Data types (string, numeric, Boolean, date)
Data Governance, Quality, and Controls16%- Data quality management
  • 1. Remediation strategies
  • 2. Quality dimensions (accuracy, completeness, consistency)
  • 3. Quality assessment and monitoring
- Security and privacy
  • 1. Access controls and encryption
  • 2. Foundational AI considerations in data lifecycle
  • 3. Audit trails and logging
  • 4. Data classification and protection
- Data governance frameworks
  • 1. Policies, standards, and procedures
  • 2. Data stewardship and ownership
  • 3. Compliance requirements (GDPR, CCPA, etc.)
Visualization15%- Storytelling with data
  • 1. Narrative techniques for data communication
  • 2. Audience-appropriate visuals
  • 3. Executive summaries and key insights
- Dashboard and report design
  • 1. Visualization best practices
  • 2. Chart types and their applications
  • 3. Dashboard components and layout
Data Analysis24%- Analysis tools and techniques
  • 1. Libraries and functions for analysis
  • 2. BI platforms and notebooks
  • 3. SQL for data analysis
- Inferential statistics
  • 1. Hypothesis testing
  • 2. Confidence intervals
  • 3. Correlation and regression basics
- Descriptive statistics
  • 1. Data distributions
  • 2. Measures of dispersion
  • 3. Measures of central tendency
Data Mining25%- Data enrichment and integration
  • 1. Data mapping and lineage
  • 2. Joining and merging datasets
  • 3. Derived columns and calculated fields
- Data preparation and cleansing
  • 1. Data normalization and transformation
  • 2. Handling missing values and duplicates
  • 3. Data cleaning techniques
- Data acquisition and collection
  • 1. APIs and connectors
  • 2. Data sources and ingestion methods
  • 3. ETL/ELT processes

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DA0-002합격보장 가능 시험 최신 시험기출문제

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최신 CompTIA Data+ DA0-002 무료샘플문제 (Q18-Q23):

질문 # 18
Which of the following supports capabilities such as automatic versioning, corruption checks, KPIs, and user authentication?

정답：A


질문 # 19
A business intelligence analyst is creating an employee retention dashboard that looks at data from the last five years. The analyst is interested in identifying patterns that can be studied further. Which of the following is the best method to apply to the dashboard?

정답：D

설명：
This question falls under theData Analysisdomain, focusing on analytical methods for dashboards. The analyst wants to identify patterns in historical data for further study, which points to a specific type of analytics.
* Predictive (Option A): Predictive analytics forecasts future outcomes, not focused on identifying patterns for further study.
* Prescriptive (Option B): Prescriptive analytics provides recommendations, which goes beyond identifying patterns.
* Diagnostic (Option C): Diagnostic analytics examines historical data to identify patterns, trends, and correlations, enabling further investigation, which fits the scenario.
* Descriptive (Option D): Descriptive analytics summarizes what happened but doesn't focus on identifying patterns for deeper study.
The DA0-002 Data Analysis domain includes "applying the appropriate descriptive statistical methods," and diagnostic analytics is best for pattern identification in historical data.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 3.0 Data Analysis.


질문 # 20
A data analyst needs to provide a weekly sales report for the Chief Financial Officer. Which of the following delivery methods is the most appropriate?

정답：C

설명：
This question pertains to theVisualization and Reportingdomain, focusing on report delivery methods for a specific audience. The Chief Financial Officer (CFO) needs a weekly sales report,suggesting a concise, executive-level summary.
* A granular daily report in a dashboard (Option A): Daily granularity is too frequent for a weekly report, and a dashboard might be too interactive for a CFO's needs.
* A detailed text document (Option B): A detailed document is too lengthy for a CFO, who typically needs a summary.
* A spreadsheet with raw data (Option C): Raw data requires further analysis, which isn't appropriate for an executive-level report.
* A high-level email (Option D): A high-level email provides a concise summary of weekly sales, tailored for an executive like a CFO, making it the most appropriate delivery method.
The DA0-002 Visualization and Reporting domain emphasizes "translating business requirements to form the appropriate visualization," and a high-level email is best for delivering a weekly summary to a CFO.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 4.0 Visualization and Reporting.


질문 # 21
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?

정답：C

설명：
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.


질문 # 22
A data analyst receives a flat file that includes dates. The analyst needs to calculate the number of days from the dates on the file to the current date. Which of the following is the best way to complete this task?

정답：A

설명：
Date values must be in a proper date format to perform accurate calculations, so converting the data and then applying date functions enables correct computation of the number of days between dates.


질문 # 23
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