DA0-002 Data Acquisition and Preparation Practice Question
A marketing team wants to analyze customer sentiment from social media posts. Which data acquisition method is most appropriate?
⚠ Common exam trap
Many candidates confuse data acquisition methods: candidates might think internal databases contain social media data or that surveys can capture unsolicited sentiment, but the key is recognizing that social media posts are external, unstructured text best obtained via APIs or scraping.
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
✓
Web scraping from public social media APIs
Web scraping from public social media APIs is the most appropriate method for analyzing customer sentiment from social media posts because it directly collects the unstructured text data (posts, comments, tweets) that contains sentiment. Social media platforms provide APIs (e.g., Twitter API, Facebook Graph API) that allow programmatic access to public posts, enabling large-scale data acquisition. This method is real-time, scalable, and captures the authentic voice of customers, which is essential for sentiment analysis. Internal databases and surveys do not capture social media data, and physical sensors are irrelevant to text-based sentiment.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Internal database query
Why it's wrong here
Internal databases hold the organisation's own transactional records, not public posts written by customers elsewhere. It tempts because querying existing stores is cheap and fast, and it is the right method when the required attributes already reside in company systems such as CRM or sales tables.
- ✗
Physical sensor data
Why it's wrong here
Sensors measure physical quantities such as temperature or motion, producing no textual opinion content. It tempts because sensor networks generate high-volume streaming data suitable for analytics, and they are the correct source when monitoring environmental or machine conditions rather than human sentiment.
- ✓
Web scraping from public social media APIs
Why this is correct
Public social media APIs expose sentiment-bearing posts as structured JSON, letting the team acquire text at scale without breaching platform terms. This satisfies the requirement to analyse customer sentiment from social media, since scraping public APIs yields the raw opinion data the model needs.
- ✗
Survey questionnaire
Why it's wrong here
Questionnaires collect only responses from people who choose to answer, capturing no unsolicited social media text. It tempts because surveys do gather opinion data at scale, and a questionnaire is the right instrument when you need structured feedback from a known sample about specific products.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
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.