順便提一下，可以從雲存儲中下載NewDumps DP-300考試題庫的完整版：https://drive.google.com/open?id=18ghySc-4vXMVtSRCgU5T0WtxbtiwgyST
DP-300 考古題覆蓋了最新的考試指南，確保考生一次性通過 DP-300 考試。Microsoft 認證專家根據 DP-300 考試主題編訂，適合全球的考生使用，提高考生的通過率。Microsoft Azure 是一張高級網路專家認可證書，亦是全球公認的專業認證。DP-300 認證主要的目的是讓網路工程師能在現今變化迅速的資訊網路環境中，都能掌握和擁有最先進的網路技術，任何時候都能保持領導地位。
| Section | Objectives |
|---|---|
| Topic 1: Plan and implement a high availability and disaster recovery environment | - Backup and restore
|
| Topic 2: Monitor and optimize operational resources | - Monitor database performance
|
| Topic 3: Implement a secure environment | - Implement data protection
|
| Topic 4: Perform automation | - Automate database tasks
|
| Topic 5: Plan and implement data platform resources | - Deploy and configure infrastructure
|
| Topic 6: Optimize query performance | - Analyze query performance
|
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問題 #266
You have an Azure subscription that contains a group named Group1 and an Azure SQL managed instance that hosts a database named 081. You need to ensure that Group 1 has read access to new tables created m 06I The solution must use the principle of least privilege How should you complete the Transact-SQL statement' To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.
答案：
解題說明：
Explanation
問題 #267
You are performing exploratory analysis of bus fare data in an Azure Data Lake Storage Gen2 account by using an Azure Synapse Analytics serverless SQL pool.
You execute the Transact-SQL query shown in the following exhibit.
Use the drop-down menus to select the answer choice that completes each statement based on the information presented in the graphic.
答案：
解題說明：
Explanation:
Box 1: CSV files that have file named beginning with "tripdata_2020"
Box 2: a header
FIRSTROW = 'first_row'
Specifies the number of the first row to load. The default is 1 and indicates the first row in the specified data file. The row numbers are determined by counting the row terminators. FIRSTROW is 1-based.
Reference:
https://docs.microsoft.com/en-us/azure/synapse-analytics/sql/develop-openrowset
問題 #268
You have a 50-TB Microsoft SQL Server database named DB1.
You need to reduce the time it takes to perform database consistency checks of DB1.
Which Transact-SQL command should you run? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
答案：
解題說明：
Reference:
https://docs.microsoft.com/en-us/sql/t-sql/database-console-commands/dbcc-checkdb-transact-sql?view=sql-server-ver15
問題 #269
You have an Azure subscription.
You plan to deploy an instance of SQL Sevier on Azure Virtual Machines that supports Write Accelerator.
Which virtual machine series should you use?
答案：B
解題說明：
Basic Concept: This question tests configure and manage automation of tasks in the DP-300 exam context.
The correct choice is determined by the exact service boundary and operational requirement stated in the scenario.
Why C is Correct: M-series matches the expected DP-300 administration action. M-series can participate in administration workflows, but automation questions require the mechanism that can execute repeatable tasks with the correct scope and schedule. The question is not asking for a general Azure capability; it is asking for the feature that produces this result: Which virtual machine series should you use?
Why A is Wrong: H-series can participate in administration workflows, but automation questions require the mechanism that can execute repeatable tasks with the correct scope and schedule. It belongs to a different step of operations; this question needs the mechanism that can run or deploy the task repeatedly.
Why B is Wrong: G -series can participate in administration workflows, but automation questions require the mechanism that can execute repeatable tasks with the correct scope and schedule. It would leave too much manual work or would operate at the wrong scope for the requested automation.
Why D is Wrong: E-series can participate in administration workflows, but automation questions require the mechanism that can execute repeatable tasks with the correct scope and schedule. It belongs to a different step of operations; this question needs the mechanism that can run or deploy the task repeatedly.
問題 #270
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.
答案：B,D
解題說明：
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
Reference:
https://docs.microsoft.com/en-us/sql/relational-databases/system-dynamic-management-views/sys-dm-tran-locks-transact-sql
問題 #271
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