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CompTIA Practice Questions

CompTIA Data+ Practice Questions

CompTIA Data Analytics (DA0-001) — Practice with free CompTIA Data+ DA0-001 sample questions covering all five certification domains. Each question comes with a detailed explanation so you actually understand the concepts - not just memorize answers. Whether you're diving into data mining, statistical analysis, or visualization best practices, these practice questions help you figure out where you stand before the real thing.

90
Total Questions
90 minutes
Time Limit
675 out of 900
Passing Score
$358
Registration Fee

Free Sample Questions

Here are 5 free sample questions from our full bank of 300+ CompTIA Data+ practice questions. Try them out below — click "Show Answer" to reveal the correct response and explanation.

1

A data analyst needs to combine customer data from two separate databases - one containing purchase history and another containing demographic information. Both databases share a common customer ID field. Which data integration technique is MOST appropriate?

AA) Data blending using the customer ID as a linking field
BB) Appending the two datasets end-to-end into a single table
CC) Creating a cross join to combine every possible row combination
DD) Using ETL to extract data into a flat file without any key matching
2

An analyst is exploring a dataset and discovers that the 'annual_income' column has a mean of $55,000 but a median of $42,000. What does this discrepancy MOST likely indicate about the data distribution?

AA) The data is normally distributed with equal spread on both sides
BB) The data is positively (right) skewed with high-income outliers pulling the mean up
CC) The data is negatively (left) skewed with low-income outliers pulling the mean down
DD) The data contains no outliers but has a bimodal distribution
3

A company wants to display quarterly revenue trends over the past three years alongside the contribution of each product line to total revenue. Which combination of visualizations would BEST communicate both aspects of this data?

AA) A pie chart for each quarter showing product line proportions
BB) A line chart for the overall trend combined with a stacked bar chart for product line breakdown
CC) A scatter plot showing revenue by quarter with color-coded product lines
DD) A single horizontal bar chart with all quarters and product lines listed
4

An organization is implementing a data governance framework and needs to assign responsibility for ensuring the quality and integrity of customer data across all departments. Which role is PRIMARILY responsible for this function?

AA) Database administrator
BB) Data steward
CC) Data analyst
DD) Chief information officer
5

A retail company has a dataset with 50,000 customer transaction records. An analyst wants to identify groups of customers with similar purchasing behavior without any predefined categories. Which data mining technique is MOST appropriate?

AA) Linear regression to predict future purchase amounts
BB) K-means clustering to segment customers into behavior-based groups
CC) Decision tree classification using known customer segments
DD) Time series analysis to forecast seasonal purchasing trends

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About the CompTIA Data+

Format & Structure

Total Questions
90
Time Limit
90 minutes
Format
Multiple choice and performance-based

Scoring & Cost

Passing Score
675 out of 900
Registration Fee
$358

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Frequently Asked Questions

What is the CompTIA Data+ certification?

CompTIA Data+ (DA0-001) is an early-career data analytics certification that validates your ability to mine and manipulate data, apply basic statistical methods, analyze complex datasets, and communicate findings through visualizations and reports. It's designed for professionals who work with data but aren't necessarily full-time data scientists - think business analysts, marketing analysts, clinical trial assistants, and operations specialists who need to turn raw data into actionable insights.

How many questions are on the CompTIA Data+ exam?

The CompTIA Data+ exam has a maximum of 90 questions. You'll encounter a mix of multiple-choice and performance-based questions. Performance-based questions typically appear early in the assessment and require you to solve problems in simulated environments rather than just picking an answer. Not everyone gets exactly 90 questions - the actual number can vary slightly depending on the assessment form you receive.

What is the CompTIA Data+ passing score?

You need a score of 675 out of 900 to pass the CompTIA Data+ assessment. CompTIA uses a scaled scoring model, so the score isn't a simple percentage of correct answers. The scaling accounts for question difficulty, which means getting harder questions right counts more toward your final score. A rough estimate is that you should aim to answer around 75-80% of questions correctly to feel confident about passing.

Is CompTIA Data+ worth it?

For many professionals, yes - especially if you're looking to break into data analytics or validate skills you already use on the job. Data+ is vendor-neutral, so it applies across industries and tools. It's particularly valuable for business analysts, junior data analysts, and anyone transitioning into a more data-focused role. The certification is relatively new (launched in 2022), so it can help you stand out. That said, it's an entry-level certification, so experienced data professionals might find more value in advanced credentials like the Google Data Analytics Professional Certificate or specific tool certifications.

What topics does the CompTIA Data+ DA0-001 cover?

The Data+ DA0-001 covers five main domains: Data Concepts and Environments (15%), Data Mining (25%), Data Analysis (23%), Visualization (23%), and Data Governance, Quality, and Controls (14%). You'll need to understand data types, database concepts, data acquisition, cleaning techniques, statistical methods, visualization best practices, and governance frameworks. The heaviest emphasis falls on Data Mining and Data Analysis combined, which together make up nearly half the assessment.

How long is the CompTIA Data+ exam?

You get 90 minutes to complete the CompTIA Data+ assessment. With up to 90 questions, that works out to roughly one minute per question - which is tight. Performance-based questions tend to take more time, so budget accordingly. Most people recommend tackling the performance-based questions first (they usually appear at the beginning), then moving through multiple-choice questions at a steady pace. Flag anything you're unsure about and come back to it if time allows.

How should I prepare for the CompTIA Data+?

Start with CompTIA's official objectives document to understand exactly what's covered. Then combine a study guide (CompTIA offers official courseware) with hands-on practice using tools like Excel, SQL, or basic visualization software. Practice questions are honestly one of the best preparation methods - they help you identify weak areas and get comfortable with how questions are worded. Focus extra time on Data Mining and Data Analysis since those domains carry the most weight. Most people need 4-8 weeks of dedicated study, depending on their background. If you already work with data regularly, you might need less time.

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