The correct response is to scale up the Azure SQL Database service tier or optimize log write patterns, because an avg_log_write_percent of 95% indicates the database is nearing its log write IOPS limit. This metric from sys.dm_db_resource_stats measures the percentage of the configured log write throughput limit being consumed, not CPU or storage space, so sustained high values mean the transaction log I/O subsystem is saturated and performance will degrade. On the DP-300 exam, this question tests your ability to interpret resource governance metrics and distinguish log write I/O from transaction log space usage—a common trap is confusing avg_log_write_percent with log file size or CPU pressure. Remember that log writes are about I/O rate, not capacity; think “IOPS, not gigabytes.” For a quick memory tip, associate “write percent high” with “scale up or optimize writes,” and never confuse it with storage or CPU metrics.
DP-300 Practice Question: Monitor, configure, and optimize database resources
This DP-300 practice question tests your understanding of monitor, configure, and optimize database resources. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. 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 monitoring an Azure SQL Database using the sys.dm_db_resource_stats DMV. The avg_log_write_percent column shows 95% for the last hour. What does this indicate, and what should you do?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The database is nearing its log write IOPS limit; consider scaling up or optimizing log writes.
Option A is correct because the metric shows log write IO usage, not CPU. Option B is wrong because it misinterprets the metric. Option C is wrong because it's not about storage size. Option D is wrong because log write percent is about I/O, not transaction log space.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The database is out of transaction log space; increase the max log size.
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this DP-300 question in full detail.
Identify which DP-300 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Monitor, configure, and optimize database resources — This question tests Monitor, configure, and optimize database resources — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The database is nearing its log write IOPS limit; consider scaling up or optimizing log writes. — Option A is correct because the metric shows log write IO usage, not CPU. Option B is wrong because it misinterprets the metric. Option C is wrong because it's not about storage size. Option D is wrong because log write percent is about I/O, not transaction log space.
What should I do if I get this DP-300 question wrong?
Identify which DP-300 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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