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| Section | Objectives |
|---|---|
| Implement a secure environment | - Implement data protection
|
| Monitor and optimize operational resources | - Monitor database performance
|
| Plan and implement a high availability and disaster recovery environment | - Backup and restore
|
| Perform automation | - Automate database tasks
|
| Optimize query performance | - Improve performance
|
| Plan and implement data platform resources | - Deploy and configure infrastructure
|
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NEW QUESTION # 149
You configure a long-term retention policy for an Azure SQL database as shown in the exhibit. (Click the Exhibit tab.)
The first weekly backup occurred on January 4, 2020. The dates for the first 10 weekly backups are:
* January 4, 2020
* January 11, 2020
* January 18, 2020
* January 25, 2020
* February 1, 2020
* February 8, 2020
* February 15, 2020
* February 22, 2020
* February 29, 2020
* March 7, 2020
Use the drop-down menus to select the answer choice that completes each statement based on the information presented in the graphic.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation:
NEW QUESTION # 150
You need to identify the cause of the performance issues on SalesSQLDb1.
Which two dynamic management views should you use? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
Answer: B,F
Explanation:
SalesSQLDb1 experiences performance issues that are likely due to out-of-date statistics and frequent blocking queries.
A: Use sys.dm_pdw_nodes_tran_locks instead of sys.dm_tran_locks from Azure Synapse Analytics (SQL Data Warehouse) or Parallel Data Warehouse.
E: Example:
The following query will show blocking information.
SELECT
t1.resource_type,
t1.resource_database_id,
t1.resource_associated_entity_id,
t1.request_mode,
t1.request_session_id,
t2.blocking_session_id
FROM sys.dm_tran_locks as t1
INNER JOIN sys.dm_os_waiting_tasks as t2
ON t1.lock_owner_address = t2.resource_address;
Note: Depending on the system you're working with you can access these wait statistics from one of three locations:
sys.dm_os_wait_stats: for SQL Server
sys.dm_db_wait_stats: for Azure SQL Database
sys.dm_pdw_nodes_os_wait_stats: for Azure SQL Data Warehouse
Incorrect Answers:
F: sys.dm_tran_locks returns information about currently active lock manager resources in SQL Server 2019 (15.x). Each row represents a currently active request to the lock manager for a lock that has been granted or is waiting to be granted.
Instead use sys.dm_pdw_nodes_tran_locks.
Reference:
https://docs.microsoft.com/en-us/sql/relational-databases/system-dynamic-management-views/sys-dm-tran-locks-transact-sql
NEW QUESTION # 151
You have an Azure subscription that contains a SQL Server instance on a virtual machine named Server1.
You execute the following T-SQL statement on Server1.
For each of the following statements, select Yes if the statement is true, otherwise select No.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation:
Basic Concept: This question tests plan and configure a high availability and disaster recovery (ha/dr) environment in the DP-300 exam context. The correct choice is determined by the exact service boundary and operational requirement stated in the scenario.
Why the selected answer is Correct: The selected values fit this scenario because they apply the required Azure SQL configuration at the correct scope and sequence: You have an Azure subscription that contains a SQL Server instance on a virtual machine named Server1.
Why the alternate choices are Wrong: The alternate selections apply to different administrative stages or different scopes. In a hotspot or drag-drop task, order and scope are part of the answer, so a technically valid Azure feature can still be wrong if it is placed in the wrong step.
NEW QUESTION # 152
You have a database on a SQL Server on Azure Virtual Machines instance.
The current state of Query Store for the database is shown in the following exhibit.
Answer:
Explanation:
Explanation:
NEW QUESTION # 153
You have an Azure SQL logical server.
You run the following script.
Answer:
Explanation:
NEW QUESTION # 154
......
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