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Microsoft DP-300 exam is ideal for professionals who are looking to enhance their skills and knowledge in the field of database administration. It is also a great certification for those who are looking to advance their careers in the IT industry. DP-300 Exam is a combination of multiple-choice questions and performance-based tasks that require candidates to demonstrate their ability to perform various database administration tasks using Microsoft Azure tools and technologies.

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DP-300 exams questions and answers & dumps PDF for Administering Relational Databases on Microsoft Azure

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Query Performance Optimization

Microsoft Administering Relational Databases on Microsoft Azure Sample Questions (Q292-Q297):

NEW QUESTION # 292
You have an Azure SQL database named db1.
You need to retrieve the resource usage of db1 from the last week.
How should you complete the statement? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Answer:

Explanation:

Explanation:

Box 1: sys.resource_stats
sys.resource_stats returns CPU usage and storage data for an Azure SQL Database. It has database_name and start_time columns.
Box 2: DateAdd
The following example returns all databases that are averaging at least 80% of compute utilization over the last one week.
DECLARE @s datetime;
DECLARE @e datetime;
SET @s= DateAdd(d,-7,GetUTCDate());
SET @e= GETUTCDATE();
SELECT database_name, AVG(avg_cpu_percent) AS Average_Compute_Utilization FROM sys.resource_stats WHERE start_time BETWEEN @s AND @e GROUP BY database_name HAVING AVG(avg_cpu_percent) >= 80 Reference:
https://docs.microsoft.com/en-us/sql/relational-databases/system-catalog-views/sys-resource-stats-azure-sql-data


NEW QUESTION # 293
You have an Azure SQL database named db1.
You need to retrieve the resource usage of db1 from the last week.
How should you complete the statement? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Answer:

Explanation:

Reference:
https://docs.microsoft.com/en-us/sql/relational-databases/system-catalog-views/sys-resource-stats-azure-sql-database


NEW QUESTION # 294
You have an Azure SQL managed instance.
You need to gather the last execution of a query plan and its runtime statistics. The solution must minimize the impact on currently running queries.
What should you do?

Answer: C

Explanation:
Reference:
https://docs.microsoft.com/en-us/sql/relational-databases/system-dynamic-management-views/sys-dm-exec-query-plan-stats-transact-sql?view=sql-server-ver15


NEW QUESTION # 295
You have an Azure subscription that contains the resources shown in the following table.

You need to back up db1 to mysqlbackups, and then restore the backup to a new database named db2 that is hosted on SQL1. The solution must ensure that db1 is backed up to a stripe set.
Which three Transact-SQL statements should you execute in sequence? To answer, move the appropriate statements from the list of statements to the answer area and arrange them in the correct order.

Answer:

Explanation:

Explanation:


Reference:
https://docs.microsoft.com/en-us/sql/relational-databases/backup-restore/sql-server-backup-to-url?view=sql- server-ver15


NEW QUESTION # 296
You have an Azure SQL database named DB1.
You need to display the estimated execution plan of a query by using the query editor in the Azure portal.
What should you do first?

Answer: D

Explanation:
Reference:
https://docs.microsoft.com/en-us/sql/t-sql/statements/set-showplan-all-transact-sql?view=sql-server-ver15 Basic Concept: This question tests monitor, configure, and optimize database resources in the DP-300 exam context. The correct choice is determined by the exact service boundary and operational requirement stated in the scenario.
Why A is Correct: Run the set showplan_all Transact-SQL statement. matches the expected DP-300 administration action. Run the set showplan_all Transact-SQL statement. is related to operational monitoring or tuning, but it must match the exact signal needed: query history, resource utilization, wait/blocking detail, or automatic remediation. The question is not asking for a general Azure capability; it is asking for the feature that produces this result: You need to display the estimated execution plan of a query by using the query editor in the Azure portal.
Why B is Wrong: Query Store captures query text, plans, and runtime statistics, making it central for reviewing query history and troubleshooting plan regressions. It would produce a different operational signal than the one needed to investigate, alert, or tune the workload in this question.
Why C is Wrong: Run the set forceplan Transact-SQL statement. is related to operational monitoring or tuning, but it must match the exact signal needed: query history, resource utilization, wait/blocking detail, or automatic remediation. It does not expose the required metric, query history, wait/blocking signal, or tuning mechanism; using it would not give the administrator the evidence requested.
Why D is Wrong: Query Store captures query text, plans, and runtime statistics, making it central for reviewing query history and troubleshooting plan regressions. It is useful in other troubleshooting paths, but this scenario requires a more specific monitoring or optimization feature.


NEW QUESTION # 297
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