DA0-002 Data Concepts and Environments Practice Question
A company needs to store raw data from IoT sensors for future machine learning projects. The data is expected to be massive and in various formats. Which storage solution is most appropriate?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Data lake
A data lake stores raw data in its native format without predefined schema, ideal for large volumes of varied data for future use.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Data mart
Why it's wrong here
Data marts are subject-specific subsets of data warehouses, not for raw data.
- ✗
Data warehouse
Why it's wrong here
Data warehouses store structured, processed data for analytics, not raw data.
- ✓
Data lake
Why this is correct
Data lakes store raw data in native format, suitable for large-scale, diverse data.
- ✗
Relational database
Why it's wrong here
Relational databases require structured schema and are not optimized for raw, varied data.
Go deeper
Related to this question
About these practice questions
This DA0-002 question is part of Courseiva's 986-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DA0-002 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DA0-002 exam.