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  1. Home
  2. Microsoft Certification
  3. DP-300 Exam
  4. Microsoft.DP-300.v2022-04-23.q155 Dumps
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Question 101

HOTSPOT
You have SQL Server on an Azure virtual machine.
You review the query plan shown in the following exhibit.

For each of the following statements, select yes if the statement is true. Otherwise, select no.
NOTE: Each correct selection is worth one point.
Hot Area:

Correct Answer:

Explanation/Reference:
https://docs.microsoft.com/en-us/sql/relational-databases/performance/monitoring-performance-by-using-the- query-store
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Question 102

You are planning the migration of the SERVER1 databases. The solution must meet the business requirements.
What should you include in the migration plan? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Correct Answer:

Reference:
https://azure.microsoft.com/pricing/details/database-migration/
https://docs.microsoft.com/en-us/azure/dms/tutorial-sql-server-azure-sql-online
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Question 103

Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You have two Azure SQL Database servers named Server1 and Server2. Each server contains an Azure SQL database named Database1.
You need to restore Database1 from Server1 to Server2. The solution must replace the existing Database1 on Server2.
Solution: From the Azure portal, you delete Database1 from Server2, and then you create a new database on Server2 by using the backup of Database1 from Server1.
Does this meet the goal?

Correct Answer: B
Instead restore Database1 from Server1 to the Server2 by using the RESTORE Transact-SQL command and the REPLACE option.
Note: REPLACE should be used rarely and only after careful consideration. Restore normally prevents accidentally overwriting a database with a different database. If the database specified in a RESTORE statement already exists on the current server and the specified database family GUID differs from the database family GUID recorded in the backup set, the database is not restored. This is an important safeguard.
Reference:
https://docs.microsoft.com/en-us/sql/t-sql/statements/restore-statements-transact-sql
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Question 104

You have a Microsoft SQL Server 2019 instance in an on-premises datacenter. The instance contains a 4-TB database named DB1.
You plan to migrate DB1 to an Azure SQL Database managed instance.
What should you use to minimize downtime and data loss during the migration?
D18912E1457D5D1DDCBD40AB3BF70D5D

Correct Answer: A
The Data Migration Assistant (DMA) helps you upgrade to a modern data platform by detecting compatibility issues that can impact database functionality in your new version of SQL Server or Azure SQL Database. DMA recommends performance and reliability improvements for your target environment and allows you to move your schema, data, and uncontained objects from your source server to your target server.
Note: SQL Managed Instance supports the following database migration options (currently these are the only supported migration methods):
Azure Database Migration Service - migration with near-zero downtime.
Native RESTORE DATABASE FROM URL - uses native backups from SQL Server and requires some downtime.
Reference:
https://docs.microsoft.com/en-us/sql/dma/dma-overview
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Question 105

You have an Azure SQL database named DB1. You run a query while connected to DB1.
You review the actual execution plan for the query, and you add an index to a table referenced by the query.
You need to compare the previous actual execution plan for the query to the Live Query Statistics.
What should you do first in Microsoft SQL Server Management Studio (SSMS)?

Correct Answer: C
Section: [none]
Explanation:
The Plan Comparison menu option allows side-by-side comparison of two different execution plans, for easier identification of similarities and changes that explain the different behaviors for all the reasons stated above.
This option can compare between:
Two previously saved execution plan files (.sqlplan extension).
One active execution plan and one previously saved query execution plan.
Two selected query plans in Query Store.
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