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CompTIA DA0-002 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Data Governance, Quality, and Controls16%- Data governance frameworks
  • 1. Compliance requirements (GDPR, CCPA, etc.)
  • 2. Policies, standards, and procedures
  • 3. Data stewardship and ownership
- Security and privacy
  • 1. Foundational AI considerations in data lifecycle
  • 2. Access controls and encryption
  • 3. Audit trails and logging
  • 4. Data classification and protection
- Data quality management
  • 1. Quality dimensions (accuracy, completeness, consistency)
  • 2. Remediation strategies
  • 3. Quality assessment and monitoring
Topic 2: Data Concepts and Environments20%- Data structures and formats
  • 1. Common data formats (JSON, XML, CSV)
  • 2. Structured, semi-structured, and unstructured data
  • 3. File types and their use cases
- Data types and metadata
  • 1. Data types (string, numeric, Boolean, date)
  • 2. Metadata and its role in data management
- Database fundamentals
  • 1. Relational vs. non-relational databases
  • 2. Cloud and containerized data environments
  • 3. Schemas and data models
Topic 3: Data Analysis24%- Descriptive statistics
  • 1. Measures of dispersion
  • 2. Measures of central tendency
  • 3. Data distributions
- Inferential statistics
  • 1. Correlation and regression basics
  • 2. Hypothesis testing
  • 3. Confidence intervals
- Analysis tools and techniques
  • 1. Libraries and functions for analysis
  • 2. SQL for data analysis
  • 3. BI platforms and notebooks
Topic 4: Data Mining25%- Data enrichment and integration
  • 1. Joining and merging datasets
  • 2. Data mapping and lineage
  • 3. Derived columns and calculated fields
- Data acquisition and collection
  • 1. ETL/ELT processes
  • 2. Data sources and ingestion methods
  • 3. APIs and connectors
- Data preparation and cleansing
  • 1. Data normalization and transformation
  • 2. Data cleaning techniques
  • 3. Handling missing values and duplicates
Topic 5: Visualization15%- Dashboard and report design
  • 1. Visualization best practices
  • 2. Dashboard components and layout
  • 3. Chart types and their applications
- Storytelling with data
  • 1. Narrative techniques for data communication
  • 2. Executive summaries and key insights
  • 3. Audience-appropriate visuals

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CompTIA Data+ Exam Sample Questions (Q103-Q108):

NEW QUESTION # 103
A data analyst must combine service calls into low-, medium-, and high-priority levels in order to analyze organizational responses. Which of the following techniques should the analyst use for this task?

Answer: C

Explanation:
Binning groups values into defined categories, such as low, medium, and high priority levels, enabling structured analysis of service call responses.


NEW QUESTION # 104
A data analyst is evaluating all conditions in a query. Which of the following is the best logical function to accomplish this task?

Answer: B

Explanation:
This question falls under theData Analysisdomain, focusing on SQL logical functions for query evaluation.
The task is to evaluate "all conditions," implying multiple conditions must be true together.
* OR (Option A): OR returns true if any condition is true, not ensuring all conditions are met.
* NOT (Option B): NOT negates a condition, not suitable for combining multiple conditions.
* AND (Option C): AND requires all conditions to be true, which aligns with evaluating "allconditions" in a query.
* IF (Option D): IF is a conditional function for decision-making, not for evaluating multiple conditions together.
The DA0-002 Data Analysis domain includes "applying the appropriate descriptive statistical methods using SQL queries," and AND is the best logical function for ensuring all conditions are met.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 3.0 Data Analysis.


NEW QUESTION # 105
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?

Answer: C

Explanation:
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.


NEW QUESTION # 106
Which of the following explains the difference between a char and an nchar data field?

Answer: A

Explanation:
Both char and nchar are fixed-length data types. The difference is that nchar stores Unicode characters, allowing support for a wider range of languages and symbols. Because Unicode characters typically require two bytes per character, nchar uses twice the storage space of char.


NEW QUESTION # 107
Which of the following data structures would a data engineer most likely receive when using a get command?

Answer: C

Explanation:
JSON (JavaScript Object Notation) is a common data structure returned by GET requests in APIs and web services. It provides a lightweight, structured format for exchanging data between systems and is widely used for transmitting records, objects, and arrays.


NEW QUESTION # 108
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