- A
Enable compression on transaction log backups.
Why wrong: Compressing transaction log backups reduces backup storage size and I/O during backups, but does not reduce the log generation rate. This option is incorrect.
- B
Create additional nonclustered indexes on frequently updated tables.
Why wrong: Creating additional nonclustered indexes increases log writes during index maintenance, which can worsen the log rate problem. This option is incorrect.
- C
Increase the service tier to Business Critical.
Increasing the service tier to Business Critical provides better log write performance through local SSD storage, reducing the log generation rate. This option is correct.
- D
Increase the backup retention period.
Why wrong: Increasing the backup retention period does not affect the log generation rate; it only retains more backups. This option is incorrect.
DP-300 Transaction log generation rate Practice Question
This DP-300 practice question tests your understanding of monitor, configure, and optimize database resources. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. A key principle to apply: transaction log generation rate. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
You are managing an Azure SQL Database that is used by a real-time analytics application. The database uses the Hyperscale service tier. You notice that the transaction log rate is consistently high, causing performance degradation. You need to reduce the log generation rate without compromising data durability. What should you do?
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
Increase the service tier to Business Critical.
Option C is correct because increasing the service tier to Business Critical provides higher log write throughput and improved log flush efficiency, which can help reduce the log generation rate under heavy load. Business Critical uses local SSDs for the transaction log, resulting in lower latency and faster log writes, thereby decreasing the rate at which log records are generated. Option A is incorrect because compressing transaction log backups does not affect the rate of log generation; it only reduces backup storage and I/O during backup operations. Option B is incorrect because adding nonclustered indexes increases log writes during index maintenance, exacerbating the log rate issue. Option D is incorrect because increasing backup retention period does not influence the log generation rate.
Key principle: Transaction log generation rate
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable compression on transaction log backups.
Why it's wrong here
Compressing transaction log backups reduces backup storage size and I/O during backups, but does not reduce the log generation rate. This option is incorrect.
- ✗
Create additional nonclustered indexes on frequently updated tables.
Why it's wrong here
Creating additional nonclustered indexes increases log writes during index maintenance, which can worsen the log rate problem. This option is incorrect.
- ✓
Increase the service tier to Business Critical.
Why this is correct
Increasing the service tier to Business Critical provides better log write performance through local SSD storage, reducing the log generation rate. This option is correct.
Related concept
Transaction log generation rate
- ✗
Increase the backup retention period.
Why it's wrong here
Increasing the backup retention period does not affect the log generation rate; it only retains more backups. This option is incorrect.
Common exam traps
Common exam trap: answer the scenario, not the keyword
A common trap is to think that compressing log backups reduces log generation, but it only reduces backup size. The actual solution is to upgrade to a higher tier with better log write performance.
Detailed technical explanation
How to think about this question
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Transaction log generation rate
- Business Critical tier
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Transaction log generation rate
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Review transaction log generation rate, then practise related DP-300 questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this DP-300 question test?
Monitor, configure, and optimize database resources — This question tests Monitor, configure, and optimize database resources — Transaction log generation rate.
What is the correct answer to this question?
The correct answer is: Increase the service tier to Business Critical. — Option C is correct because increasing the service tier to Business Critical provides higher log write throughput and improved log flush efficiency, which can help reduce the log generation rate under heavy load. Business Critical uses local SSDs for the transaction log, resulting in lower latency and faster log writes, thereby decreasing the rate at which log records are generated. Option A is incorrect because compressing transaction log backups does not affect the rate of log generation; it only reduces backup storage and I/O during backup operations. Option B is incorrect because adding nonclustered indexes increases log writes during index maintenance, exacerbating the log rate issue. Option D is incorrect because increasing backup retention period does not influence the log generation rate.
What should I do if I get this DP-300 question wrong?
Review transaction log generation rate, then practise related DP-300 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Transaction log generation rate
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Last reviewed: Jun 21, 2026
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.
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