DA0-002 Data Acquisition and Preparation Practice Question
A financial analyst is integrating data from multiple stock exchanges. One exchange provides trade timestamps in UTC, another in Eastern Time. The analyst needs accurate time synchronization for time-series analysis. What is the best approach?
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
✓
Convert all timestamps to a single timezone (e.g., UTC) during ETL
(convert to UTC) is the standard. Option A (keep original with offset) adds complexity. Option B (local time) is inconsistent. Option D (ignore) leads to errors.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Keep original timezones and add a timezone offset column
Why it's wrong here
This complicates analysis as offsets must be applied each time.
- ✗
Use the local time of the analyst's location
Why it's wrong here
Local time is arbitrary and not consistent across datasets.
- ✓
Convert all timestamps to a single timezone (e.g., UTC) during ETL
Why this is correct
Converting to a common timezone ensures consistent timestamps for analysis.
- ✗
Ignore timezone differences if analysis is intraday
Why it's wrong here
Ignoring timezone differences can cause misalignment even intraday.
Go deeper
Related to this question
About these practice questions
One of 986 original DA0-002 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. 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.