DP-900 Describe core data concepts Practice Question
Exhibit
Refer to the exhibit. ```kql StormEvents | where EventType == "Flood" | summarize TotalDamage = sum(DamageProperty) by State | top 5 by TotalDamage desc ```
You are analyzing the results of a KQL query in Azure Data Explorer. What does this query return?
⚠ Common exam trap
A common mix-up: candidates confuse grouping by state versus grouping by event type, or they misinterpret 'top 5 by' as returning all rows sorted rather than only the top 5 rows.
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
✓
Top 5 states with highest total property damage from floods
The KQL query uses the 'summarize' operator to aggregate total property damage by state, then applies 'top 5 by' to return the five states with the highest total property damage from flood events. The 'where' clause filters for flood events, and the 'project' operator selects only the state and damage columns, confirming that the result is the top 5 states by total property damage.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Total damage per event type
Why it's wrong here
The query filters for 'Flood' only.
- ✗
All states with flood events sorted by damage
Why it's wrong here
The query limits to top 5.
- ✓
Top 5 states with highest total property damage from floods
Why this is correct
The query filters, sums, and returns top 5.
- ✗
Top 5 flood events with highest damage
Why it's wrong here
It summarizes by state, not by event.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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