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. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Exhibit
Azure SQL Database automatic tuning recommendations:
Recommendation ID: 1
Type: CREATE_INDEX
Reason: Improve query performance
Score: 80
State: Active
Impacted queries: 3
Recommendation ID: 2
Type: DROP_INDEX
Reason: Index not used
Score: 90
State: Pending verification
Impacted queries: 0
Recommendation ID: 3
Type: FORCE_LAST_GOOD_PLAN
Reason: Regression detected
Score: 100
State: Active
Impacted queries: 1
Current query performance metrics for impacted query of recommendation 3:
Before plan change: avg CPU 500 ms, avg duration 1000 ms
After plan change: avg CPU 1000 ms, avg duration 2000 ms
Refer to the exhibit. An automatic tuning recommendation to force the last good plan is active. What should the database administrator do next?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Monitor the query performance to confirm the forced plan resolves the regression
The recommendation is active and the query regressed, so forcing the last good plan is appropriate. The DBA should verify the plan change improved performance.
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.
✗
Immediately implement the DROP_INDEX recommendation to reduce overhead
Why it's wrong here
The DROP_INDEX is pending verification and not directly related.
✗
Create the recommended index to improve performance
Why it's wrong here
The CREATE_INDEX recommendation targets different queries.
✗
Revert the plan force because it is causing regression
Why it's wrong here
The regression was after the plan change; forcing last good plan should help.
✓
Monitor the query performance to confirm the forced plan resolves the regression
Why this is correct
The active recommendation should be monitored for effectiveness.
Related concept
Read the scenario before looking for a memorised answer.
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 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.
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: Monitor the query performance to confirm the forced plan resolves the regression — The recommendation is active and the query regressed, so forcing the last good plan is appropriate. The DBA should verify the plan change improved performance.
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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