DA0-002 Data Concepts and Environments Practice Question
Which of the following data sources is most likely to generate streaming data?
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
✓
IoT sensors
Streaming data is continuously generated from sources like IoT sensors, clickstreams, and social media feeds.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Transactional database
Why it's wrong here
A transactional database persists committed rows; consumers must poll or use change-data-capture to observe them, so the database itself emits no continuous event stream. It is tempting because high-volume transaction systems generate constant change, and CDC against them would be the right choice for near-real-time replication.
- ✗
Flat file
Why it's wrong here
Flat files are static, batch-loaded stores; data arrives only when a process writes and re-reads the file, so no continuous event flow exists. It is tempting because files can be appended to and tailed by agents, which suits log shipping pipelines rather than genuine streaming sources.
- ✗
API
Why it's wrong here
An API is request-response: the client polls or calls on demand, so data arrives only when invoked, not as a continuous push. It is tempting because webhook and streaming API variants exist, and those would be correct where the provider pushes events to a subscriber endpoint.
- ✓
IoT sensors
Why this is correct
IoT sensors emit continuous, time-stamped measurements as events occur, making them a natural streaming source. Unlike batch extracts or static reference tables, sensor telemetry arrives incrementally and is consumed by stream processing platforms in near real time.
About these practice questions
Courseiva writes every DA0-002 question from scratch — 1,004 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or 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.