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Microsoft Administering Relational Databases on Microsoft Azure Sample Questions (Q188-Q193):

NEW QUESTION # 188
You have SQL Server on an Azure virtual machine that contains a database named DB1.
You have an application that queries DB1 to generate a sales report.
You need to see the parameter values from the last time the query was executed.
Which two actions should you perform? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.

A. Enable Lightweight_Query_Profiling in DB1
B. Enable PARAMETER_SNIFFING in DB1
C. Enable Last_Query_Plan_Stats in the master database
D. Enable Lightweight_Query_Profiling in the master database
E. Enable Last_Query_Plan_Stats in DB1

Answer: A,B

Explanation:
Last_Query_Plan_Stats allows you to enable or disable collection of the last query plan statistics (equivalent to an actual execution plan) in sys.dm_exec_query_plan_stats.
Lightweight profiling can be disabled at the database level using the LIGHTWEIGHT_QUERY_PROFILING database scoped configuration: ALTER DATABASE SCOPED CONFIGURATION SET LIGHTWEIGHT_QUERY_PROFILING = OFF;.
Incorrect Answers:
E: Parameter sensitivity, also known as "parameter sniffing", refers to a process whereby SQL Server "sniffs" the current parameter values during compilation or recompilation, and passes it along to the Query Optimizer so that they can be used to generate potentially more efficient query execution plans.
Parameter values are sniffed during compilation or recompilation for the following types of batches:
Stored procedures
Queries submitted via sp_executesql
Prepared queries
Reference:
https://docs.microsoft.com/en-us/sql/relational-databases/performance/query-profiling-infrastructure

NEW QUESTION # 189
You have SQL Server 2019 on an Azure virtual machine that runs Windows Server 2019. The virtual machine has 4 vCPUs and 28 GB of memory.
You scale up the virtual machine to 8 vCPUs and 64 GB of memory.
You need to reduce tempdb contention without negatively affecting server performance.
What is the number of secondary data files that you should configure for tempdb?

A. 0
B. 1
C. 2
D. 3

Answer: D

Explanation:
If the number of logical processors is greater than eight (8), use eight data files. If contention continues, increase the number of data files by multiples of four (4) up to the number of logical processors until the contention is reduced to acceptable levels. Alternatively, make changes to the workload or code.
Reference:
https://docs.microsoft.com/en-US/troubleshoot/sql/performance/recommendations-reduce-allocation-contention

NEW QUESTION # 190
You have an instance of SQL Server on Azure Virtual Machines named VM1.
You need to use an Azure Automation runbook to initiate a SQL Server database backup on VM1.
How should you complete the command? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Answer:

Explanation:

NEW QUESTION # 191
You plan to migrate on-premises Microsoft SQL Server databases to Azure.
You need to identify which deployment and resiliency options meet the following requirements:
Support user-initiated backups.
Support multiple automatically replicated instances across Azure regions.
Minimize administrative effort to implement and maintain business continuity.
What should you identify? 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/azure/azure-sql/virtual-machines/windows/sql-server-on-azure-vm-iaas-what-is-overview
https://docs.microsoft.com/en-us/dotnet/architecture/cloud-native/infrastructure-resiliency-azure

NEW QUESTION # 192
You create a new Azure SQL managed instance named SQL1 and enable Database Mail extended stored procedures.
You need to ensure that SOL Server Agent jobs running on SQL 1 can notify administrators when a failure occurs.
Which three actions should you perform in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.

Answer:

Explanation:

1 - Create a Database Mail account.
2 - Create a profile named AzureManagedInstance_dbmail_profile.
3 - Enable email notifications upon failure.

NEW QUESTION # 193
......

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