This DA0-001 practice question tests your understanding of visualizing data. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A dashboard needs to show sales trends for each of five regions over the past year. The intended audience wants to compare trends easily. Which chart type is best?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Line chart with multiple lines
Multiple line charts clearly show each region's trend over time.
Pie chart
Why wrong: Pie charts show proportions at a single point in time, not trends.
Stacked bar chart
Why wrong: Stacked bars emphasize total and composition, not individual trends.
Area chart
Why wrong: Area charts can show magnitude but may obscure individual trends when stacked.
Answer choices
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
Option B is correct because multiple line chart lines allow comparison of trends across regions. A stacked bar would show composition, not trends.
Key principle: OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Line chart with multiple lines
Why this is correct
Multiple line charts clearly show each region's trend over time.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
OSPF neighbours must agree on key parameters.
Pie chart
Why it's wrong here
Pie charts show proportions at a single point in time, not trends.
Stacked bar chart
Why it's wrong here
Stacked bars emphasize total and composition, not individual trends.
Area chart
Why it's wrong here
Area charts can show magnitude but may obscure individual trends when stacked.
Common exam traps
OSPF neighbour formation depends on matching areas, timers, network type, authentication and passive-interface behaviour. Do not choose an answer only because the devices can ping.
Trap categories for this question
Command / output trap
Pie charts show proportions at a single point in time, not trends.
Detailed technical explanation
OSPF questions usually test the details that control adjacency and route selection. Read the neighbour state, area, router ID and interface configuration before deciding what is wrong.
Key takeaway
OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Real-world example
A practitioner preparing for the DA0-001 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related DA0-001 OSPF questions on adjacency and route selection.
Visualizing Data — study guide chapter
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FAQ
Visualizing Data — This question tests Visualizing Data — OSPF neighbours must agree on key parameters..
The correct answer is: Line chart with multiple lines — Option B is correct because multiple line chart lines allow comparison of trends across regions. A stacked bar would show composition, not trends.
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related DA0-001 OSPF questions on adjacency and route selection.
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
OSPF neighbours must agree on key parameters.
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Last reviewed: Jun 24, 2026
This DA0-001 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 DA0-001 exam.
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