DP-300 Practice Question: Monitor, configure, and optimize database resources
Your company uses Azure SQL Database with active geo-replication. You notice that the secondary database in a different region has a high log write latency. Users report that the primary database performance is normal. What is the most likely cause?
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
✓
Network latency between the primary and secondary regions
Active geo-replication asynchronously replicates transaction log records from the primary to the secondary database. High log write latency on the secondary is most commonly caused by network latency between the regions. Option A is incorrect because the secondary database's log IOPS are not directly the issue; the log is applied from the primary. Option C is incorrect because primary CPU usage does not directly impact secondary log write latency. Option D is incorrect because read workload on the secondary does not affect log write latency; the secondary applies log regardless of read activity.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Insufficient log IOPS on the secondary database
Why it's wrong here
The secondary applies log from primary, not generate its own.
- ✓
Network latency between the primary and secondary regions
Why this is correct
Geo-replication log shipping is affected by network latency.
- ✗
High CPU usage on the primary database
Why it's wrong here
Primary performance is reported as normal.
- ✗
Excessive read workload on the secondary database
Why it's wrong here
Read workload does not cause log write latency.
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.