DP-300 Practice Question: Monitor, configure, and optimize database resources
You have an Azure SQL Database that is experiencing high wait times on RESOURCE_SEMAPHORE waits. You need to identify the root cause. What should you check?
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
✓
Queries with large memory grants
RESOURCE_SEMAPHORE waits indicate memory grant pressure, typically caused by queries requesting large memory grants. Option D is correct. Option A is incorrect because blocking and deadlocks produce LCK_M_* waits, not RESOURCE_SEMAPHORE. Option B is incorrect because high CPU usage leads to SOS_SCHEDULER_YIELD waits. Option C is incorrect because disk I/O bottlenecks cause PAGEIOLATCH waits.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Blocking and deadlocks
Why it's wrong here
Blocking causes LCK_M_* waits.
- ✗
High CPU usage
Why it's wrong here
High CPU causes SOS_SCHEDULER_YIELD waits.
- ✗
Disk I/O bottlenecks
Why it's wrong here
Disk I/O causes PAGEIOLATCH waits.
- ✓
Queries with large memory grants
Why this is correct
RESOURCE_SEMAPHORE waits indicate memory grant pressure.
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.
About these practice questions
This DP-300 question is part of Courseiva's 906-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
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.