Quick Answer
The correct answer is to enable the READ COMMITTED SNAPSHOT isolation level. This minimizes deadlocks in Azure SQL Managed Instance by using row versioning, which allows readers to access the last committed version of a row without being blocked by writers, thereby eliminating the shared locks that typically cause deadlocks during concurrent transactions like those in a flash sale. On the Microsoft Azure Database Administrator Associate DP-300 exam, this scenario tests your understanding of isolation levels versus hardware scaling or monitoring tools; a common trap is assuming that increasing instance size or using automatic tuning resolves deadlocks, but only isolation changes address the locking mechanism. Remember the memory tip: "Snapshot stops the blocking, not the shopping"—meaning versioning prevents lock contention without sacrificing performance.
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 have an Azure SQL Managed Instance used for an e-commerce platform. During a flash sale, you experience a deadlock that causes transaction rollbacks. You need to minimize deadlock occurrences in the future. What should you implement?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Enable READ COMMITTED SNAPSHOT isolation level.
Row versioning reduces lock contention and deadlocks.
Configure deadlock graph in Extended Events.
Why wrong: Deadlock graph only captures events for analysis.
Enable automatic tuning to force last good plan.
Why wrong: Automatic tuning is for plan regression, not deadlocks.
Increase the instance vCores to improve concurrency.
Why wrong: More resources do not address deadlock logic.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Enable READ COMMITTED SNAPSHOT isolation level.
Option A is correct because enabling READ COMMITTED SNAPSHOT isolation reduces deadlocks by using row versioning. Option B is wrong because increasing instance size does not prevent deadlocks. Option C is wrong because automatic tuning does not handle deadlocks. Option D is wrong because deadlock graph captures events but doesn't prevent them.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Enable READ COMMITTED SNAPSHOT isolation level.
Why this is correct
Row versioning reduces lock contention and deadlocks.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Configure deadlock graph in Extended Events.
Why it's wrong here
Deadlock graph only captures events for analysis.
Enable automatic tuning to force last good plan.
Why it's wrong here
Automatic tuning is for plan regression, not deadlocks.
Increase the instance vCores to improve concurrency.
Why it's wrong here
More resources do not address deadlock logic.
Common exam traps
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
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
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 — study guide chapter
Learn the concepts, then practise the questions
Monitor, configure, and optimize database resources practice questions
Targeted practice on this topic area only
All DP-300 questions
953 questions across all exam domains
Microsoft Azure Database Administrator Associate DP-300 study guide
Full concept coverage aligned to exam objectives
DP-300 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise DP-300 questions linked to Plan and configure a high availability and disaster recovery environment.
Practise DP-300 questions linked to Plan and implement data platform resources.
Practise DP-300 questions linked to Monitor, configure, and optimize database resources.
Practise DP-300 questions linked to Configure and manage automation of tasks.
Practise DP-300 questions linked to Plan and configure high availability and disaster recovery.
Practise DP-300 questions linked to Implement a secure environment.
Practise DP-300 questions linked to DP-300 fundamentals.
Practise DP-300 questions linked to DP-300 scenario.
Practise DP-300 questions linked to DP-300 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Monitor, configure, and optimize database resources — This question tests Monitor, configure, and optimize database resources — Read the scenario before looking for a memorised answer..
The correct answer is: Enable READ COMMITTED SNAPSHOT isolation level. — Option A is correct because enabling READ COMMITTED SNAPSHOT isolation reduces deadlocks by using row versioning. Option B is wrong because increasing instance size does not prevent deadlocks. Option C is wrong because automatic tuning does not handle deadlocks. Option D is wrong because deadlock graph captures events but doesn't prevent them.
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.
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.