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 data analyst is creating a dashboard to display monthly sales trends for the past two years. The dataset includes monthly sales figures with seasonal fluctuations. The analyst wants to highlight both the overall trend and the seasonal patterns effectively. Which TWO chart types are most appropriate for this purpose? (Select two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Line chart
A line chart (A) clearly shows the overall trend over time, while a bar chart (C) allows easy comparison of monthly values, revealing seasonal peaks and troughs. A pie chart (B) is for parts of a whole and not suitable for trends. A scatter plot (D) is for correlations, not time series. A stacked area chart (E) can show cumulative trends but makes individual monthly comparisons difficult.
Key principle: OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Line chart
Why this is correct
Correct. Line charts are ideal for showing trends over time, such as monthly sales trends.
Incorrect. Pie charts show proportions of a whole at a single point in time, not trends over time.
Common exam traps
Common exam trap: OSPF can fail even when IP connectivity looks correct
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
Incorrect. Scatter plots are used to show relationships between two numerical variables, not time series trends.
Detailed technical explanation
How to think about this question
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.
KKey Concepts to Remember
OSPF neighbours must agree on key parameters.
Router ID selection can affect neighbour relationships and LSDB output.
OSPF cost influences the preferred path.
A route can appear in OSPF information but not become the installed route.
TExam Day Tips
→Check area mismatch first when OSPF adjacency fails.
→Review passive interfaces when a network is advertised but no neighbour forms.
→Use show ip ospf neighbor and show ip route clues carefully.
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
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
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 — This question tests Visualizing Data — OSPF neighbours must agree on key parameters..
What is the correct answer to this question?
The correct answer is: Line chart — A line chart (A) clearly shows the overall trend over time, while a bar chart (C) allows easy comparison of monthly values, revealing seasonal peaks and troughs. A pie chart (B) is for parts of a whole and not suitable for trends. A scatter plot (D) is for correlations, not time series. A stacked area chart (E) can show cumulative trends but makes individual monthly comparisons difficult.
What should I do if I get this DA0-001 question wrong?
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.
What is the key concept behind this question?
OSPF neighbours must agree on key parameters.
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Question Discussion
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