Free practice + study guide

CompTIA Data+ (DA0-001)

  • 22 free practice questions, every one explained · no signup
  • Timed mock exam (22 questions, 90 minutes) — free
  • Study guide: free to read online
Practice free 22 questions · explanations · no signup

PrepPass team · Verified against CompTIA · How we review

01

Test what you know · free, all of it

Four ways to practise.

The same 22 questions, dealt four ways. Pick the one that fits the time you have.

By section
Pick Data Mining, Data Analysis, Visualization, Data Concepts and Environments. An explanation appears the moment you answer.
22 questionsuntimed
Timed mock
Sit it like the real thing, then get a score report by section.
22 questions90 minutes
Read every question
The whole bank with answers shown — for review, not testing.
all 22, by section
Question of the day
One question, one explanation, every day — across every exam on the site.
dailyone question
02

Learn what the questions test

Practice · free
22
questions, each explained — finds what you don't know yet
Learn · free
5
chapters, free to read online

The five chapters, free online

every chapter free online
  1. 1Data Concepts and Environments15% of the examRead free →
  2. 2Data Mining and PreparationData Mining · 25% — the largest sectionRead free →
  3. 3Data Analysis23%Read free →
  4. 4Visualization and ReportingVisualization · 23%Read free →
  5. 5Data Governance, Quality, and Controls14%Read free →
03

Before you sit

Know the exam you're walking into.

Free study guideEvery section, onlineTopics by weightWhat to study firstHow hard is it?Honest answer, with numbersScores & retakesWhat the board publishesOne-page cram sheetNight-before facts
04

See the questions first

Two from the bank, answered.

Real items, with the answer marked and the reason written out — the same format as all 22.

Data Analysis

A report summarizes what happened last quarter, showing total sales, average order value, and month-over-month change. Which type of analytics is this?

  1. APrescriptive analytics
  2. BPredictive analytics
  3. CDescriptive analyticsCorrect
  4. DDiagnostic analytics

Why: Descriptive analytics summarizes what has already happened using measures such as totals and averages. Diagnostic analytics explains why it happened, predictive forecasts what will happen, and prescriptive recommends what action to take.

Data Mining

During data preparation, an analyst finds the same customer recorded three times with identical details. Which data-cleansing task removes these repeats?

  1. ANormalization of numeric ranges
  2. BImputation
  3. CAggregation
  4. DDeduplicationCorrect

Why: Deduplication removes duplicate records so each entity appears once, preventing inflated counts and skewed analysis. Imputation fills in missing values, normalization rescales numeric ranges, and aggregation summarizes groups; none of those address duplicate rows.

Read all 22 questions with answers →

06

The exam itself

CompTIA Data+ (DA0-001), by the numbers.

Time90 minutes
SectionsData Concepts and Environments · Data Mining · Data Analysis · Visualization · Data Governance, Quality, and Controls
Passing score675/900
Our bank22 questions · updated August 2026Written from CompTIA
LanguagesEnglish
SourceCompTIA

Related exams

Other license and certification exams people prep for alongside this one.

See all Technology & IT →
09

Questions

Asked before starting.

Is the practice really free, or does it stop after a few questions?

All 22 questions, the timed mock and the report are free with no sign-up. A free account only adds saving your progress.

Is your mock the same as the real CompTIA Data+ (DA0-001)?

No. Ours is 22 questions in 90 minutes; the real exam is 90 minutes long. Use the mock for stamina and section timing, not as a score predictor.

What score do I need?

675/900 — as published by CompTIA. Confirm the current rule with them before your exam date.

Practice questions are AI-assisted study material written from CompTIA and reviewed by PrepPass — for practice only, not official exam questions. Bank updated August 2026. PrepPass is an independent study resource and is not affiliated with, endorsed by, or approved by CompTIA. Always confirm current exam details with CompTIA.
Report