CompTIA Data+ Certification - DA0-001 Exam Questions [2026]

QUESTION NO: 1
A data analyst is developing a data dictionary that aligns with a company's data management processes and policies. Which of the following best describes what should be included in the data dictionary?

A. Information explaining the business methodologies B. Information describing the data analysis phases C. Information containing definitions of the business data D. Information containing the links to business data

Correct Answer: C

QUESTION NO: 2
A web developer wants to ensure that malicious users can't type SQL statements when they asked for input, like their username/userid.
Which of the following query optimization techniques would effectively prevent SQL Injection attacks?

A. Temporary table in the query set. B. Indexing. C. Parametrization. D. Subset of records.

Correct Answer: C

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QUESTION NO: 3
An organization wants to evaluate whether project activities are within the set projections and in line to meet the desired project targets. Which of the following types of analysis is best suited for this situation?

A. Exploratory analysis B. Trend analysis C. Performance analysis D. Descriptive analysis

Correct Answer: C

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QUESTION NO: 4
Which of the following variable name formats would be problematic if used in the majority of data software programs?

A. First_Name B. FirstName C. First_Name_ D. First Name

Correct Answer: D

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QUESTION NO: 5
Given the diagram below:

Which of the following steps is missing?

A. Remove redundant data. B. Normalize the data. C. Validate the data types. D. Connect to the data API.

Correct Answer: A

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QUESTION NO: 6
A survey asks participants to rate a company on a scale of one to ten. Which of the following best describes the rating variable?

A. Continuous B. Categorical C. Nominal D. Ordinal

Correct Answer: D

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QUESTION NO: 7
Which of the following best describes a difference between JSON and XML?

A. JSON is quicker to read and write. B. JSON strings are longer C. JSON is much more difficult to parse. D. JSON has to use an end tag.

Correct Answer: A

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QUESTION NO: 8
A development company is constructing a new unit in its apartment complex. The complex has the following floor plans:

Using the average cost per square foot of the original floor plans, which of the following should be the price of the Rose unit?

A. $690,000 B. $702,500 C. $640,900 D. $705,200

Correct Answer: D

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QUESTION NO: 9
What SQL command is used to delete an entire table from a database?

A. DELETE. B. ALTER. C. MODIFY. D. DROP.

Correct Answer: D

QUESTION NO: 10
Which of the following types of data manipulation functions should a data analyst use to implement a YES
/NO condition in a spreadsheet?

A. Statistical B. Financial C. Logical D. Text

Correct Answer: C

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