[Apr-2026] Exam DP-300: New Brain Dump Professional - ExamDiscuss
Free DP-300 Exam Dumps to Improve Exam Score
Microsoft’s DP-300 certification exam is designed to test the candidate’s ability to administer relational databases on Microsoft Azure. Administering Relational Databases on Microsoft Azure certification is intended for database administrators who want to validate their skills in deploying, managing, securing, and monitoring databases in the cloud. The DP-300 exam is one of the most sought-after certifications in the database administration field and is recognized by many leading industries worldwide.
Configure Query Performance: 5-10%
- Assess Performance Improvement: The competence required in this domain includes identifying performance concerns with DMVs and evaluating the utilization of hints regarding query performance.
- Review Query Plans: The test takers should be able to establish the problem areas within execution plans and determine the relevant execution plan type.
- Review Index Design & Database Table: The skills covered in this topic include evaluating index design for performance, table partitioning strategy, and compression for indexes and table usage.
NEW QUESTION # 123
You are creating a new notebook in Azure Databricks that will support R as the primary language but will also support Scala and SQL.
Which switch should you use to switch between languages?
- A. \\[<language>]
- B. %<language>
- C. @<language>
- D. \\[<language>]
Answer: B
Explanation:
Section: [none]
Explanation:
You can override the default language by specifying the language magic command %<language> at the beginning of a cell. The supported magic commands are: %python, %r, %scala, and %sql.
Reference:
https://docs.microsoft.com/en-us/azure/databricks/notebooks/notebooks-use
NEW QUESTION # 124
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_tran_locks
- B. sys.dm_exec_requests
- C. sys.dm_cdc_errors
- D. sys.dm_pdw_nodes_tran_locks
- E. sys.dm_pdw_nodes_os_wait_stats
- F. sys.dm_exec_compute_node_errors
Answer: D,E
Explanation:
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SalesSQLDb1 experiences performance issues that are likely due to out-of-date statistics and frequent blocking queries.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
Reference:
https://docs.microsoft.com/en-us/sql/relational-databases/system-dynamic-management-views/sys-dm-tran-locks
NEW QUESTION # 125
You have an Azure subscription.
You plan to deploy an Azure SQL database by using an Azure Resource Manager template.
How should you complete the template? 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/database/single-database-create-arm-template-quickstart
NEW QUESTION # 126
A data engineer creates a table to store employee information for a new application. All employee names are in the US English alphabet. All addresses are locations in the United States. The data engineer uses the following statement to create the table.
You need to recommend changes to the data types to reduce storage and improve performance.
Which two actions should you recommend? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
- A. Change Salary to the money data type.
- B. Change LastHireDate to the datetime2(7) data type.
- C. Change PhoneNumber to the float data type.
- D. Change PhoneNumber to the bigint data type.
- E. Change LastHireDate to the date data type.
Answer: A,E
Explanation:
A: Money takes less space compared to VARCHAR(20)
E: Date takes less space compared to Datetime.
Reference:
https://docs.microsoft.com/eN-Us/sql/t-sql/data-types/data-types-transact-sql
NEW QUESTION # 127
You need to use an Azure Resource Manager ARM) template to deploy an Azure virtual machine that will host a Microsoft SQL Server instance. The solution must maximize disk I/O performance for the SQL Server database and log files How should you complete the template? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation
Read onlyReadWrite
NEW QUESTION # 128
You need to design an analytical storage solution for the transactional data. The solution must meet the sales transaction dataset requirements.
What should you include in the solution? To answer, select the appropriate options in the answer area.
NOTE:Each correct selection is worth one point.
Answer:
Explanation:
Explanation
Graphical user interface, text, application Description automatically generated
Box 1: Hash
Scenario:
Ensure that queries joining and filtering sales transaction records based on product ID complete as quickly as possible.
A hash distributed table can deliver the highest query performance for joins and aggregations on large tables.
Box 2: Round-robin
Scenario:
You plan to create a promotional table that will contain a promotion ID. The promotion ID will be associated to a specific product. The product will be identified by a product ID. The table will be approximately 5 GB.
A round-robin table is the most straightforward table to create and delivers fast performance when used as a staging table for loads. These are some scenarios where you should choose Round robin distribution:
When you cannot identify a single key to distribute your data.
If your data doesn't frequently join with data from other tables.
When there are no obvious keys to join.
Reference:
https://rajanieshkaushikk.com/2020/09/09/how-to-choose-right-data-distribution-strategy-for-azure-synapse/
NEW QUESTION # 129
You have a resource group named App1Dev that contains an Azure SQL Database server named DevServer1.
DevServer1 contains an Azure SQL database named DB1. The schema and permissions for DB1 are saved in a Microsoft SQL Server Data Tools (SSDT) database project.
You need to populate a new resource group named App1Test with the DB1 database and an Azure SQL Server named TestServer1. The resources in App1Test must have the same configurations as the resources in App1Dev.
Which four 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:
Explanation:
NEW QUESTION # 130
You are monitoring an Azure Stream Analytics job.
You discover that the Backlogged input Events metric is increasing slowly and is consistently non-zero.
You need to ensure that the job can handle all the events.
What should you do?
- A. Remove any named consumer groups from the connection and use $default.
- B. Create an additional output stream for the existing input stream.
- C. Increase the number of streaming units (SUs).
- D. Change the compatibility level of the Stream Analytics job.
Answer: C
Explanation:
Section: [none]
Explanation:
Backlogged Input Events: Number of input events that are backlogged. A non-zero value for this metric implies that your job isn't able to keep up with the number of incoming events. If this value is slowly increasing or consistently non-zero, you should scale out your job, by increasing the SUs.
Reference:
https://docs.microsoft.com/en-us/azure/stream-analytics/stream-analytics-monitoring
NEW QUESTION # 131
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.
Answer:
Explanation:
Explanation
Step 1: Create a column master key
Create a column master key metadata entry before you create a column encryption key metadata entry in the database and before any column in the database can be encrypted using Always Encrypted.
Step 2: Create a column encryption key.
Step 3: Encrypt the Salary column by using the randomized encryption type.
Randomized encryption uses a method that encrypts data in a less predictable manner. Randomized encryption is more secure, but prevents searching, grouping, indexing, and joining on encrypted columns.
Note: A column encryption key metadata object contains one or two encrypted values of a column encryption key that is used to encrypt data in a column. Each value is encrypted using a column master key.
Reference:
https://docs.microsoft.com/en-us/sql/relational-databases/security/encryption/always-encrypted-database-engine
NEW QUESTION # 132
You have an Azure SQL database named DB1 that contains a table named Table 1.
You run a query to load data into Table1.
The performance metrics of Table1 during the load operation are 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. NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation
NEW QUESTION # 133
You have an Azure SQL database.
You run the following PowerShell script.
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:
Reference:
https://docs.microsoft.com/en-us/powershell/module/az.sql/set-azsqldatabasebackupshorttermretentionpolicy?view=azps-7.2.0
https://docs.microsoft.com/en-us/powershell/module/az.sql/set-azsqldatabasebackuplongtermretentionpolicy?view=azps-7.2.0
NEW QUESTION # 134
You plan to create a table in an Azure Synapse Analytics dedicated SQL pool.
Data in the table will be retained for five years. Once a year, data that is older than five years will be deleted.
You need to ensure that the data is distributed evenly across partitions. The solutions must minimize the amount of time required to delete old data.
How should you complete the Transact-SQL statement? To answer, drag the appropriate values to the correct targets. Each value may be used once, more than once, or not at all.
You may need to drag the split bar between panes or scroll to view content.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation:
Box 1: HASH
Box 2: OrderDateKey
In most cases, table partitions are created on a date column.
A way to eliminate rollbacks is to use Metadata Only operations like partition switching for data management.
For example, rather than execute a DELETE statement to delete all rows in a table where the order_date was in October of 2001, you could partition your data early. Then you can switch out the partition with data for an empty partition from another table.
Reference:
https://docs.microsoft.com/en-us/sql/t-sql/statements/create-table-azure-sql-data-warehouse
https://docs.microsoft.com/en-us/azure/synapse-analytics/sql/best-practices-dedicated-sql-pool
NEW QUESTION # 135
You have an Azure subscription.
You need to deploy an Azure SQL resource that will support cross database queries by using an Azure Resource Manager (ARM) template.
How should you complete the ARM template? 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/managed-instance/create-template-quickstart?tabs=azure-powershell
NEW QUESTION # 136
You have an Azure subscription that contains the resources shown in the following table.
You need to configure a connection between VM1 and MIL The solution must meet the following requirements:
* The connection must be encrypted.
* Network latency must be minimized.
What should you implement?
- A. service endpoints
- B. a site-to-site VPN
- C. private endpoints
- D. virtual network peering
Answer: C
NEW QUESTION # 137
You have an Azure SQL database named DB1 that contains a private certificate named Sales. The private key for Sales is encrypted with a password. You need to change the password for the private key. Which Transact- SQL statement should you run?
- A.
- B.
- C.
- D.
Answer: A
NEW QUESTION # 138
You need to apply 20 built-in Azure Policy definitions to all new and existing Azure SQL Database deployments in an Azure subscription. The solution must minimize administrative effort.
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:
Explanation
Step 1: Create an Azure Policy Initiative
The first step in enforcing compliance with Azure Policy is to assign a policy definition. A policy definition defines under what condition a policy is enforced and what effect to take.
With an initiative definition, you can group several policy definitions to achieve one overarching goal. An initiative evaluates resources within scope of the assignment for compliance to the included policies.
Step 2: Create an Azure Policy Initiative assignment
Assign the initiative definition you created in the previous step.
Step 3: Run Azure Policy remediation tasks
To apply the Policy Initiative to the existing SQL databases.
Reference:
https://docs.microsoft.com/en-us/azure/governance/policy/tutorials/create-and-manage
NEW QUESTION # 139
You have an on-premises Microsoft SQL Server instance named SQL1 that hosts multiple databases. You have an Azure subscription that contains an Azure SQL managed instance named SQLM11. You need to perform an offline migration of the SQLi databases to SQLMH by using Azure Data Studio. What should you install on SQL1?
- A. a self-hosted integration runtime
- B. an Azure Migrate appliance
- C. Data Migration Assistant (DMA)
- D. SQL Server Data Tools (SSDT)
Answer: A
NEW QUESTION # 140
You have a resource group named App1Dev that contains an Azure SQL Database server named DevServer1. DevServer1 contains an Azure SQL database named DB1. The schema and permissions for DB1 are saved in a Microsoft SQL Server Data Tools (SSDT) database project.
You need to populate a new resource group named App1Test with the DB1 database and an Azure SQL Server named TestServer1. The resources in App1Test must have the same configurations as the resources in App1Dev.
Which four 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 - From the Azure portal, export the Azure Resource Manager tamplates
2 - Change the server name and related variables in the tamplates
3 - From the Azure portal, deploy the templates.
4 - From the database schema and permissions
NEW QUESTION # 141
......
One of the main benefits of earning the DP-300 certification is that it demonstrates an individual's proficiency in cloud-based database administration on Microsoft Azure. Administering Relational Databases on Microsoft Azure certification is ideal for IT professionals who are already working with relational databases on-premises or in the cloud and want to enhance their knowledge and skills in managing databases on Azure.
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