DP-300 Practice Question: Monitor, configure, and optimize database resources
You are troubleshooting a performance degradation on an Azure SQL Database. You notice that the database is hitting the maximum DTU limit frequently. Which action should you take first to reduce DTU consumption?
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
✓
Use Query Performance Insight to identify and optimize top resource-consuming queries
Query Performance Insight helps identify the top resource-consuming queries. Optimizing those queries is the most direct way to reduce DTU consumption. Option A is wrong because increasing the log rate limit does not reduce DTU consumption. Option B is wrong because scaling up increases cost and may not address the root cause. Option D is wrong because rebuilding all indexes can increase DTU temporarily.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Increase the log rate limit
Why it's wrong here
Increasing the log rate limit does not reduce DTU consumption; it affects transaction log throughput.
- ✗
Scale up the database to a higher service tier
Why it's wrong here
Scaling up increases cost and may not address root cause; it is better to optimize queries first.
- ✓
Use Query Performance Insight to identify and optimize top resource-consuming queries
Why this is correct
Query Performance Insight helps identify and optimize top resource-consuming queries, directly reducing DTU usage.
- ✗
Rebuild all indexes in the database
Why it's wrong here
Rebuilding all indexes can temporarily increase DTU consumption and may not be necessary.
Go deeper
Related to this question
Learn chapter
Overview of Azure Data Platform Options
Key term
Azure SQL Performance Tuning
Azure SQL Performance Tuning is the process of optimizing the speed and efficiency of queries and database operations in Microsoft Azure SQL Database or SQL Managed Instance to reduce latency and improve throughput.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DP-300 practice question is part of Courseiva's free Microsoft 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 DP-300 exam.