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CompTIA DA0-002 Exam Overview:

Certification Vendor:	CompTIA
Exam Name:	CompTIA Data+ Exam
Exam Number:	DA0-002
Exam Format:	Multiple-choice, Performance-based questions
Available Languages:	English
Passing Score:	720 (scale 100–900)
Real Exam Qty:	Up to 90
Exam Duration:	90 minutes
Exam Price:	$255 USD
Certificate Validity Period:	3 years
Recommended Training:	CompTIA Official Training
Exam Registration:	Pearson VUE Testing CompTIA Official Registration
Sample Questions:	CompTIA DA0-002 Sample Questions
Exam Way:	Online proctored or onsite at Pearson VUE test centers
Pre Condition:	Recommended 18–24 months of experience in data/business analysis role; familiarity with databases, analytical tools, basic statistics, and visualization
Official Syllabus URL:	https://www.comptia.org/certifications/data

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CompTIA DA0-002 考試大綱：

主題	簡介
主題 1	Data Concepts and Environments: This section of the exam measures the skills of a Junior Data Analyst and focuses on understanding core data concepts such as database types, schema structures, and data formats. It highlights differences between structured and unstructured data, compares file types like CSV, JSON, and XML, and introduces key ideas about data dimensions and slowly changing dimensions. Knowing how data is stored and organized helps professionals better prepare for analysis and reporting tasks.
主題 2	Data Analysis: This section of the exam measures skills of a Reporting Analyst and includes foundational knowledge of statistical methods such as averages, variances, and standard deviation. It covers how to use data to find patterns, track performance, and make predictions. This domain also introduces hypothesis testing, regression, correlation, and different types of analysis like exploratory and trend analysis. Candidates should also be aware of common tools used for analysis, including Excel, SQL, Python, R, and popular BI platforms like Tableau and Power BI.
主題 3	Visualization: This section of the exam measures skills of a Data Visualisation Specialist and focuses on turning raw data into clear, visual insights. It teaches how to match visual formats like bar charts, heat maps, and line graphs to specific audiences and needs. Candidates must understand how to create dashboards and reports using proper design elements such as labels, layout, branding, and colour schemes. This section also includes best practices for dashboard development and delivery through various platforms and user access levels.
主題 4	Data Mining: This section of the exam measures skills of a Business Intelligence Analyst and covers how data is collected, cleaned, and prepared for analysis. It explains methods like ETL and ELT for data integration, as well as web scraping, API use, and survey data collection. Candidates are expected to identify issues like missing or duplicated data and apply techniques like filtering, sorting, merging, and normalizing. The section also touches on query optimization strategies to improve data handling efficiency.
主題 5	This section of the exam measures skills of a Data Governance Associate and introduces principles for keeping data secure, accurate, and compliant. It covers access controls, encryption, classification of sensitive data like PII and PHI, and legal requirements tied to data use. Candidates must know how to apply quality checks, validate data, and manage master data effectively. It also addresses best practices for maintaining integrity through data dictionaries, audits, and standardisation processes.

最新的 CompTIA Data+ DA0-002 免費考試真題 (Q199-Q204):

問題 #199
A data analyst wants to use the following tables to find all the customers who have not placed an order:

Which of the following SQL statements is the best way to accomplish this task?

A. SELECT * FROM PRODUCTS AS P LEFT JOIN CUSTOMERS AS C ON P.Customer_ID = C.ID WHERE P.Customer_ID IS NOT NULL
B. SELECT * FROM PRODUCTS AS P INNER JOIN CUSTOMERS AS C ON P.Customer_ID =C.ID WHERE (SELECT COUNT(P.) = 0)
C. SELECT * FROM CUSTOMERS AS C INNER JOIN PRODUCTS AS P ON C.ID = C.IDWHERE COUNT(P.) =
D. A SELECT * FROM CUSTOMERS AS C LEFT JOIN PRODUCTS AS P ON C.ID = P.Customer_ID WHERE P.Customer_ID IS NULL

答案：D

問題 #200
A data analyst is creating a report about cars sold within the last twelve months. The current data set only contains information from the last ten months. Which of the following is the most appropriate way to accomplish this task?

A. Extract the records from the last two months of the previous year and append them to the data table.
B. Merge the records from the last two months of the previous year and append them to the data table.
C. Join the records from the last two months of the previous year and append them to the data table.
D. Parse the records from the last two months of the previous year and append them to the data table.

答案：A

問題 #201
A data analyst needs to generate a list of employees who currently live in Dade, FL. Given the following table:

Which of the following SQL statements should the analyst use to complete this task?

A. SELECT * FROM Employee WHERE emp_city LIKE 'D%';
B. SELECT * FROM Employee WHERE emp_city = 'Dade' OR emp_st = 'FL';
C. SELECT * FROM Employee WHERE emp_city = 'Dade' AND emp_st = 'FL';
D. SELECT * FROM Employee WHERE emp_city IN ('Dade', 'FL');

答案：C

解題說明：
The requirement is to return only employees who live in both the city of Dade and the state of FL.
Using the AND operator ensures that both conditions must be true for a record to be included in the result set.

問題 #202
A project manager requests an unscheduled report that provides a list of clients. Which of the following frequencies is best for this report?

A. Daily
B. Weekly
C. Ad hoc
D. Annual

答案：C

解題說明：
This question pertains to theVisualization and Reportingdomain, focusing on report delivery frequencies.
The report is described as unscheduled, meaning it's a one-time request.
* Annual (Option A): Annual frequency implies a scheduled report every year, not suitable for an unscheduled request.
* Daily (Option B): Daily frequency implies a scheduled report each day, not suitable.
* Weekly (Option C): Weekly frequency implies a scheduled report each week, not suitable.
* Ad hoc (Option D): Ad hoc reports are generated on-demand for one-time or unscheduledneeds, which matches the project manager's request.
The DA0-002 Visualization and Reporting domain includes "the appropriate visualization in the form of a report" with delivery methods, and ad hoc is the best frequency for an unscheduled report.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 4.0 Visualization and Reporting.

問題 #203
Which of the following is the best way to ensure a procedure performs appropriately during heavy use?

A. User acceptance test
B. Network throughput test
C. Stress test
D. Requirements test

答案：C

解題說明：
A stress test evaluates how a procedure, system, or application performs under heavy workloads or extreme conditions. It helps identify performance limits, bottlenecks, and potential failures, ensuring the procedure continues to operate appropriately during periods of high use.

問題 #204
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