DA0-002 Data Governance Practice Question
Network Topology
Refer to the exhibit. A data analyst wants to create a visualization that best shows the trend of sales over time for each department. Which chart type should be used?
⚠ Common exam trap
CompTIA often tests the distinction between showing trends over time versus comparing discrete categories; the trap here is that candidates may choose a grouped bar chart (Option D) because it can display multiple departments, but they overlook that bars are better for comparing values at specific points rather than showing the continuous flow of time.
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
✓
Line chart with multiple lines.
A line chart with multiple lines is the best choice because it clearly shows the trend of sales over time for each department, with time on the x-axis and sales on the y-axis. Each line represents a department, making it easy to compare trends across departments while preserving the continuous nature of time. This aligns with the goal of visualizing trends, as line charts excel at showing changes over a continuous interval.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Stacked bar chart.
Why it's wrong here
Stacked bars emphasize parts of a whole over time, but trends are harder to follow.
- ✗
Pie chart for each quarter.
Why it's wrong here
Pie charts show composition for a single time period, not trends.
- ✓
Line chart with multiple lines.
Why this is correct
Multiple line charts clearly show the trend for each department over time.
- ✗
Grouped bar chart.
Why it's wrong here
Grouped bars compare categories at each time point but do not emphasize the continuous trend.
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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.