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Task 5 You need to configure a disaster recovery solution for db1. When a failover occurs, the connection strings to the database must remain the same. The secondary server must be in the West US 3 Azure region.
Task 10 You need to protect all the databases on sql37006S95 from SQL injection attacks.
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You have an Azure SQL Database managed instance named SQLMI1. A Microsoft SQL Server Agent job runs on SQLMI1. You need to ensure that an automatic email notification is sent once the job completes. What should you include in the solution?
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DRAG DROP You have an Azure SQL database that contains a table named Employees. Employees contains a column named Salary. You need to encrypt the Salary column. The solution must prevent database administrators from reading the data in the Salary column and must provide the most secure encryption. 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.
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Task 4 You need to enable change data capture (CDC) for db1.

Question 4 - DP-300 discussion

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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.

A.
sys.dm_pdw_nodes_tran_locks
Answers
A.
sys.dm_pdw_nodes_tran_locks
B.
sys.dm_exec_compute_node_errors
Answers
B.
sys.dm_exec_compute_node_errors
C.
sys.dm_exec_requests
Answers
C.
sys.dm_exec_requests
D.
sys.dm_cdc_errors
Answers
D.
sys.dm_cdc_errors
E.
sys.dm_pdw_nodes_os_wait_stats
Answers
E.
sys.dm_pdw_nodes_os_wait_stats
F.
sys.dm_tran_locks
Answers
F.
sys.dm_tran_locks
Suggested answer: A, E

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SalesSQLDb1 experiences performance issues that are likely due to out-of-date statistics and frequent blocking queries.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

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asked 02/10/2024
Vaibhav Somani
34 questions
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