DP-300 Practice Question: Monitor, configure, and optimize database resources
You need to monitor Azure SQL Database performance over time and receive alerts when CPU usage exceeds 80%. Which Azure service should you use?
⚠ Common exam trap
A common mix-up: candidates confuse Query Performance Insight (which shows historical query performance data) with a monitoring/alerting tool, but it lacks the ability to set proactive threshold-based alerts like Azure Monitor Alerts provides.
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
✓
Azure Monitor Alerts
Azure Monitor Alerts is the correct service because it allows you to create metric-based alert rules that trigger when the CPU percentage of an Azure SQL Database exceeds a defined threshold (e.g., 80%). It continuously monitors performance metrics over time and sends notifications (e.g., email, SMS, or webhook) when the condition is met, fulfilling the requirement for both monitoring and alerting.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Automatic tuning
Why it's wrong here
Automatic tuning applies index and plan corrections; it neither collects performance telemetry nor raises threshold alerts, so CPU over 80% goes unnoticed. It is tempting because it also targets Azure SQL performance, but it belongs to optimisation, not monitoring — Azure Monitor with alerts is the correct choice.
- ✗
Query Performance Insight
Why it's wrong here
Query Performance Insight surfaces top resource-consuming queries but provides no alerting mechanism, so the 80% CPU threshold cannot be triggered. It is correct when investigating which queries consume the most CPU or I/O over a recent window.
- ✓
Azure Monitor Alerts
Why this is correct
Azure Monitor Alerts evaluates metric rules against Azure SQL Database telemetry and triggers notifications when thresholds such as CPU above 80% are breached. It provides the sustained monitoring and alerting the stem requires, unlike query-level tools or auditing features.
- ✗
SQL Assessment
Why it's wrong here
SQL Assessment evaluates configuration against best-practise baselines and produces recommendations, not live CPU telemetry, so it cannot trigger threshold alerts. It is tempting because it does surface database health findings, and it would be the right choice when auditing configuration drift or security posture rather than monitoring runtime metrics.
Go deeper
Related to this question
Learn chapter
Optimizing Database Query and Index Performance
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.