The correct answer is that high log generation rate is causing log rate governance throttling, and the recommended mitigation is to reduce the log generation rate by batching transactions. In Azure SQL Database Hyperscale, the log write path is designed with a built-in governance mechanism that throttles excessive log generation to protect secondary replicas from falling behind, so when you see consistently high log write latency, it is almost always a sign that your workload is hitting this governance ceiling rather than a hardware bottleneck. On the DP-300 exam, this question tests your understanding of Hyperscale’s unique architecture—specifically that it uses local SSD for log storage (not provisioned IOPS), and that scaling up compute does not increase log throughput limits. A common trap is to assume the issue is disk performance or compute size, but the real culprit is transaction volume. Remember the mnemonic: “Batch to beat the throttle.”
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. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Your Azure SQL Database is configured with the Hyperscale service tier. You observe that log write latency is consistently high, affecting transaction throughput. What is the most likely cause and the recommended mitigation?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
High log generation rate is causing log rate governance throttling; reduce the log generation rate by batching transactions.
Option C is correct because in Hyperscale, log rate is governed to protect secondary replicas; high latency indicates throttling. Option A is wrong because Hyperscale uses local SSD for log, not PIOPS. Option B is wrong because log rate governance affects all log writes. Option D is wrong because scaling up compute doesn't increase log throughput limits.
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 log IOPS is limited by the disk performance; increase the provisioned IOPS.
Why it's wrong here
Hyperscale log is on local SSDs with fixed high performance; IOPS is not provisioned.
✗
The compute replica is undersized; scale up the compute to increase log throughput.
Why it's wrong here
Compute scaling does not increase log throughput limits.
✓
High log generation rate is causing log rate governance throttling; reduce the log generation rate by batching transactions.
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The log write latency is due to network congestion; move the database to a different region.
Why it's wrong here
Network latency is not the primary cause for log writes in Hyperscale.
Common exam traps
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: High log generation rate is causing log rate governance throttling; reduce the log generation rate by batching transactions. — Option C is correct because in Hyperscale, log rate is governed to protect secondary replicas; high latency indicates throttling. Option A is wrong because Hyperscale uses local SSD for log, not PIOPS. Option B is wrong because log rate governance affects all log writes. Option D is wrong because scaling up compute doesn't increase log throughput limits.
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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Your Azure SQL Database is configured with the Hyperscale service tier. You observe increased redo log latency. Which resource is most likely the bottleneck?
medium
A.Compute node CPU
✓ B.Log service throughput
C.Page server IO
D.Remote storage IOPS
Why B: Option B is correct because in Hyperscale, the log service is a separate component that handles redo; high latency there directly affects redo speed. Option A is wrong because compute node CPU affects query processing, not redo latency specifically. Option C is wrong because page servers handle data reads, not redo. Option D is wrong because storage IO is distributed and rarely the bottleneck for redo in Hyperscale.
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Question Discussion
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