DP-300 Practice Question: Monitor, configure, and optimize database resources
Exhibit
Refer to the exhibit. The following KQL query is run in Azure Monitor to analyze performance: AzureMetrics | where ResourceProvider == "MICROSOFT.SQL" | where MetricName == "dtu_consumption_percent" | where TimeGenerated > ago(1h) | summarize avg(Maximum) by bin(TimeGenerated, 5m)
You observe that the average of Maximum DTU consumption over the last hour is consistently above 90%. What should you do next?
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
✓
Scale up the database to a higher service tier or increase DTU.
When average DTU consumption is consistently above 90%, it indicates high resource usage. Scaling up the database to a higher service tier or increasing DTUs directly addresses the resource pressure and improves performance. Option B is incorrect because enabling Query Store is a diagnostic tool to identify performance issues, but it does not provide immediate relief. Option C is incorrect because rebuilding indexes can help with fragmentation but may not address the underlying resource limitation. Option D is incorrect because sustained high DTU can lead to performance degradation and should be addressed.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Scale up the database to a higher service tier or increase DTU.
Why this is correct
High DTU consumption indicates need for more resources.
- ✗
Enable Query Store to analyze top queries.
Why it's wrong here
Analysis is good but action to scale is more direct.
- ✗
Rebuild all indexes in the database.
Why it's wrong here
Index rebuild may help fragmentation, but high DTU suggests overall resource shortage.
- ✗
Do nothing; it's normal for DTU to be high.
Why it's wrong here
Sustained high DTU can cause throttling and poor performance.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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