20+ practice questions focused on Monitor, configure, and optimize database resources — one of the most tested topics on the Microsoft Azure Database Administrator Associate DP-300 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Monitor, configure, and optimize database resources PracticeWhich TWO actions can help reduce `PAGEIOLATCH_UP` waits on an Azure SQL Database?
Explanation: PAGEIOLATCH_UP waits occur when a task is waiting for a data page to be read from disk into the buffer pool while holding an update latch. These waits are typically caused by I/O contention on data pages during update operations. Option A helps by reducing the number of data pages that need to be modified and read during an update, for instance by allowing index seeks instead of scans. Option C helps by increasing the overall I/O throughput of the database through a higher service tier, which reduces the time needed for page reads. In contrast, reducing MAXDOP (B) mainly affects CPU parallelism, not I/O, and adding memory (D) might help only if the buffer pool is too small to cache pages, but it does not directly address the I/O latency causing PAGEIOLATCH_UP.
You are managing an Azure SQL Database that runs a critical line-of-business application. Users report that a specific query is running slower than usual. You identify that the query is performing a clustered index scan on a large table with over 10 million rows. The table has a clustered index on an identity column and a nonclustered index on a frequently filtered column. You need to minimize the query execution time without adding additional indexes. What should you do?
Explanation: The query is performing a clustered index scan, which means SQL Server is reading all rows in the table. Outdated statistics can cause the optimizer to choose a scan instead of a more efficient seek. Updating all statistics on the table (option B) provides the optimizer with fresh distribution information, potentially allowing it to choose a better execution plan that avoids the scan, thereby reducing query execution time without adding indexes.
You are configuring Azure SQL Database automatic tuning. You want to enable the feature that automatically creates and drops indexes based on workload patterns. Which option should you enable?
Explanation: Azure SQL Database's automatic tuning includes the 'Create Index' and 'Drop Index' options, which together automatically create indexes to improve query performance and drop unused or duplicate indexes to reduce overhead based on workload patterns. This feature analyzes query execution plans and index usage statistics to dynamically adjust indexing without manual intervention.
Refer to the exhibit. You have configured the automatic tuning policy as shown. After a week, you notice that an index has been dropped automatically, causing a critical query to run slowly. What should you do to prevent this in the future while still benefiting from automatic tuning?
Explanation: Disabling the dropIndex option prevents automatic index drops while keeping forcePlan and createIndex enabled. Option A is wrong because manually creating an index and marking it as required does not prevent future automatic drops. Option B is wrong because Query Store does not prevent index drops; it only tracks usage. Option D is wrong because disabling all automatic tuning removes all benefits, including forcePlan and createIndex.
What effect does the command in the exhibit have on the database?
Explanation: Setting AUTO_PAUSE_DELAY = 0 is not a valid value in Azure SQL Database serverless. The minimum allowed delay is 1 minute. Therefore, the database interprets a value of 0 as the minimum, effectively setting the auto-pause delay to 1 minute.
+15 more Monitor, configure, and optimize database resources questions available
Practice all Monitor, configure, and optimize database resources questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Monitor, configure, and optimize database resources. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Monitor, configure, and optimize database resources questions on the DP-300 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Monitor, configure, and optimize database resources is tested as part of the Microsoft Azure Database Administrator Associate DP-300 blueprint. Practicing with targeted Monitor, configure, and optimize database resources questions ensures you can handle any format or difficulty that appears.
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Difficulty is subjective, but Monitor, configure, and optimize database resources is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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