[2025年03月] 無料DP-300試験問題集試験点数を伸ばそう [Q150-Q166]

[2025年03月] 無料DP-300試験問題集試験点数を伸ばそう

2025年最新のDP-300実際問題集には試験のコツがあるPDF試験材料

質問 # 150
You have SQL Server on an Azure virtual machine that contains a database named DB1.
The database reports a CHECKSUM error.
You need to recover the database.
How should you complete the statements? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

正解：

解説：

Reference:
https://docs.microsoft.com/en-us/sql/t-sql/database-console-commands/dbcc-checkdb-transact-sql

質問 # 151
You need to implement the surrogate key for the retail store table. The solution must meet the sales transaction dataset requirements.
What should you create?

A. a table the has an IDENTITY property
B. a user-defined SEQUENCE object
C. a table that has a FOREIGN KEY constraint
D. a system-versioned temporal table

正解：A

解説：
Scenario: Contoso requirements for the sales transaction dataset include:
Implement a surrogate key to account for changes to the retail store addresses.
A surrogate key on a table is a column with a unique identifier for each row. The key is not generated from the table data. Data modelers like to create surrogate keys on their tables when they design data warehouse models. You can use the IDENTITY property to achieve this goal simply and effectively without affecting load performance.
Reference:
https://docs.microsoft.com/en-us/azure/synapse-analytics/sql-data-warehouse/sql-data-warehouse-tablesidentity

質問 # 152
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?

A. From SQL Server Management Studio (SSMS), create a Database Mail profile
B. From the Azure portal, create an Azure Monitor action group that has an Email/SMS/Push/Voice action
C. From SQL Server Management Studio (SSMS), run sp_set_sqlagent_properties
D. From SQL Server Configuration Manager (SSMS), enable SQL Server Agent

正解：A

解説：
To send a notification in response to an alert, you must first configure SQL Server Agent to send mail.
Using SQL Server Management Studio; to configure SQL Server Agent to use Database Mail:
In Object Explorer, expand a SQL Server instance.
Right-click SQL Server Agent, and then click Properties.
Click Alert System.
Select Enable Mail Profile.
In the Mail system list, select Database Mail.
In the Mail profile list, select a mail profile for Database Mail.
Restart SQL Server Agent.
Note: Prerequisites include:
Enable Database Mail.
Create a Database Mail account for the SQL Server Agent service account to use.
Create a Database Mail profile for the SQL Server Agent service account to use and add the user to the DatabaseMailUserRole in the msdb database.
Set the profile as the default profile for the msdb database.
Reference:
https://docs.microsoft.com/en-us/sql/relational-databases/database-mail/configure-sql-server-agent-mail-to-use-database-mail

質問 # 153
You have SQL Server on an Azure virtual machine named SQL1.
SQL1 has an agent job to back up all databases.
You add a user named dbadmin1 as a SQL Server Agent operator.
You need to ensure that dbadmin1 receives an email alert if a job fails.
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.

正解：

解説：

Explanation:
Step 1: Enable the email settings for the SQL Server Agent.
To send a notification in response to an alert, you must first configure SQL Server Agent to send mail.
Step 2: Create a job alert
Step 3: Create a job notification
Example:
-- adds an e-mail notification for the specified alert (Test Alert)
-- This example assumes that Test Alert already exists
-- and that Francois Ajenstat is a valid operator name.
USE msdb ;
GO
EXEC dbo.sp_add_notification
@alert_name = N'Test Alert',
@operator_name = N'Francois Ajenstat',
@notification_method = 1 ;
GO
Reference:
https://docs.microsoft.com/en-us/sql/ssms/agent/notify-an-operator-of-job-status
https://docs.microsoft.com/en-us/sql/ssms/agent/assign-alerts-to-an-operator

質問 # 154
You have an Azure SQL database named DB1.
You need to ensure that DB1 will support automatic failover without data loss if a datacenter fails. The solution must minimize costs.
Which deployment option and pricing tier should you configure?

A. Azure SQL Database managed instance General Purpose
B. Azure SQL Database Premium
C. Azure SQL Database Basic
D. Azure SQL Database Hyperscale

正解：B

解説：
By default, the cluster of nodes for the premium availability model is created in the same datacenter. With the introduction of Azure Availability Zones, SQL Database can place different replicas of the Business Critical database to different availability zones in the same region. To eliminate a single point of failure, the control ring is also duplicated across multiple zones as three gateway rings (GW). The routing to a specific gateway ring is controlled by Azure Traffic Manager (ATM). Because the zone redundant configuration in the Premium or Business Critical service tiers does not create additional database redundancy, you can enable it at no extra cost. By selecting a zone redundant configuration, you can make your Premium or Business Critical databases resilient to a much larger set of failures, including catastrophic datacenter outages, without any changes to the application logic. You can also convert any existing Premium or Business Critical databases or pools to the zone redundant configuration.
Incorrect Answers:
C) This feature is not available in SQL Managed Instance.
Reference:
https://docs.microsoft.com/en-us/azure/azure-sql/database/high-availability-sla

質問 # 155
You have a Microsoft SQL Server 2017 server that hosts five databases.
You Plan to migrate the databases to Azure.
You need to recommend a solution that meets the following requirements:
* Automatically scales compute based on the workload demand
* Provides per-second billing
What should you include in the recommendation? To answer, select the appropriate options in the answer area.

正解：

解説：

Explanation:

質問 # 156
You are building a database in an Azure Synapse Analytics serverless SQL pool.
You have data stored in Parquet files in an Azure Data Lake Storage Gen2 container.
Records are structured as shown in the following sample.

The records contain two applicants at most.
You need to build a table that includes only the address fields.
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.

正解：

解説：

Reference:
https://docs.microsoft.com/en-us/azure/synapse-analytics/sql/develop-tables-external-tables

質問 # 157
You have an Azure SQL database named db1.
You need to retrieve the resource usage of db1 from the last week.
How should you complete the statement? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

正解：

解説：

Reference:
https://docs.microsoft.com/en-us/sql/relational-databases/system-catalog-views/sys-resource-stats-azure-sql-database

質問 # 158
You have an Azure SQL Database managed instance.
The instance starts experiencing performance issues.
You need to identify which query is causing the issue and retrieve the execution plan for the query. The solution must minimize administrative effort.
What should you use?

A. Extended Events
B. dynamic management views
C. the Azure portal
D. Query Store

正解：B

解説：
Reference:
https://docs.microsoft.com/en-us/sql/relational-databases/performance/monitoring-performance-by-using-the-query-store?view=sql-server-ver15

質問 # 159
You are designing an enterprise data warehouse in Azure Synapse Analytics that will store website traffic analytics in a star schema.
You plan to have a fact table for website visits. The table will be approximately 5 GB.
You need to recommend which distribution type and index type to use for the table. The solution must provide the fastest query performance.
What should you recommend? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

正解：

解説：

Reference:
https://docs.microsoft.com/en-us/azure/synapse-analytics/sql-data-warehouse/sql-data-warehouse-tables-distribute
https://docs.microsoft.com/en-us/azure/synapse-analytics/sql-data-warehouse/sql-data-warehouse-tables-index

質問 # 160
You have an Azure virtual machine named VM1 on a virtual network named VNet1. Outbound traffic from VM1 to the internet is blocked.
You have an Azure SQL database named SqlDb1 on a logical server named SqlSrv1.
You need to implement connectivity between VM1 and SqlDb1 to meet the following requirements:
Ensure that all traffic to the public endpoint of SqlSrv1 is blocked.
Minimize the possibility of VM1 exfiltrating data stored in SqlDb1.
D18912E1457D5D1DDCBD40AB3BF70D5D
What should you create on VNet1?

A. an ExpressRoute gateway
B. a VPN gateway
C. a private link
D. a service endpoint

正解：C

解説：
Azure Private Link enables you to access Azure PaaS Services (for example, Azure Storage and SQL Database) and Azure hosted customer-owned/partner services over a private endpoint in your virtual network.
Traffic between your virtual network and the service travels the Microsoft backbone network. Exposing your service to the public internet is no longer necessary.
Reference:
https://docs.microsoft.com/en-us/azure/private-link/private-link-overview

質問 # 161
You have an Azure SQL database named DB 1 in the General Purpose service tier.
You need to monitor DB 1 by using SQL Insights.
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.

正解：

解説：

Explanation:
Box 1 = Azure Monitor Agent
Box 2 = An Azure SQL database
https://docs.microsoft.com/en-us/azure/azure-sql/database/sql-database-paas-overview?view=azuresql

質問 # 162
You have an Azure SQL database named sqldb1.
You need to minimize the possibility of Query Store transitioning to a read-only state.
What should you do?

A. Double the value of Statistics Collection Interval
B. Decrease by half the value of Statistics Collection interval
C. Decrease by half the value of Data Flush Interval
D. Double the value of Data Flush interval

正解：C

解説：
Section: [none]
Explanation:
The Max Size (MB) limit isn't strictly enforced. Storage size is checked only when Query Store writes data to
disk. This interval is set by the Data Flush Interval (Minutes) option. If Query Store has breached the maximum
size limit between storage size checks, it transitions to read-only mode.
Incorrect Answers:
C: Statistics Collection Interval: Defines the level of granularity for the collected runtime statistic, expressed in
minutes. The default is 60 minutes. Consider using a lower value if you require finer granularity or less time to
detect and mitigate issues. Keep in mind that the value directly affects the size of Query Store data.
Reference:
https://docs.microsoft.com/en-us/sql/relational-databases/performance/best-practice-with-the-query-store

質問 # 163
Case Study 5 - ADatum Corporation
Overview
ADatum Corporation is a financial services company that has a main office in New York City.
Existing Environment
Licensing Agreement
ADatum has a Microsoft Volume Licensing agreement that includes Software Assurance.
Network Infrastructure
ADatum has an on-premises datacenter and an Azure subscription named Sub1.
Sub1 contains a virtual network named Network1 in the East US Azure region.
The datacenter is connected to Network1 by using a Site-to-Site (S2S) VPN.
Identity Environment
The on-premises network contains an Active Directory Domain Services (AD DS) forest.
The forest contains a single domain named corp.adatum.com.
The corp.adatum.com domain syncs with a Microsoft Entra tenant named adatum.com.
Database Environment
The datacenter contains the servers shown in the following table.

DB1 and DB2 are used for transactional and analytical workloads by an application named App1.
App1 runs on Microsoft Entra hybrid joined servers that run Windows Server 2022. App1 uses Kerberos authentication.
DB3 stores compliance data used by two applications named App2 and App3.
DB3 performance is monitored by using Extended Events sessions, with the event_file target set to a file share on a local disk of SVR3.
Resource allocation for DB3 is managed by using Resource Governor.
Requirements
Planned Changes
ADatum plans to implement the following changes:
- Deploy an Azure SQL managed instance named Instance1 to Network1.
- Migrate DB1 and DB2 to Instance1.
- Migrate DB3 to Azure SQL Database.
- Following the migration of DB1 and DB2, hand over database development to remote developers who use Microsoft Entra joined Windows 11 devices.
- Following the migration of DB3, configure the database to be part of an auto-failover group.
Availability Requirements
ADatum identifies the following post-migration availability requirements:
- For DB1 and DB2, offload analytical workloads to a read-only database replica in the same Azure region.
- Ensure that if a regional disaster occurs, DB1 and DB2 can be recovered from backups.
- After the migration, App1 must maintain access to DB1 and DB2.
- For DB3, manage potential performance issues caused by resource demand changes by App2 and App3.
- Ensure that DB3 will still be accessible following a planned failover.
- Ensure that DB3 can be restored if the logical server is deleted.
- Minimize downtime during the migration of DB1 and DB2.
Security Requirements
ADatum identifies the following security requirements for after the migration:
- Ensure that only designated developers who use Microsoft Entra joined Windows 11 devices can access DB1 and DB2 remotely.
- Ensure that all changes to DB3, including ones within individual transactions, are audited and recorded.
Management Requirements
ADatum identifies the following post-migration management requirements:
- Continue using Extended Events to monitor DB3.
- In Azure SQL Database, automate the management of DB3 by using elastic jobs that have database-scoped credentials.
Business Requirements
ADatum identifies the following business requirements:
- Minimize costs whenever possible, without affecting other requirements.
- Minimize administrative effort.
You need to recommend a process to automate the management of DB3. The solution must meet the management requirements.
What should be the first step of the process?

A. Create a database that has database-scoped credentials.
B. Create database-scoped credentials in DB3.
C. Configure Microsoft Entra authentication for the logical server that hosts DB3.
D. Configure a private endpoint for connectivity to DB3.

正解：B

質問 # 164
You have an Azure subscription that contains a logical SQL server. The server hosts two databases named db1 and db2 and an Azure AD service principal named app1.
You need to ensure that app1 can access db1. 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.

正解：

解説：

Explanation:

https://learn.microsoft.com/en-us/azure/azure-sql/database/authentication-aad-service-principal-tutorial?view=azuresql

質問 # 165
You are planning the migration of the SERVER1 databases. The solution must meet the business requirements.
What should you include in the migration plan? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

正解：

解説：

Explanation:

Azure Database Migration service
Box 1: Premium 4-VCore
Scenario: Migrate the SERVER1 databases to the Azure SQL Database platform.
* Minimize downtime during the migration of the SERVER1 databases.
Premimum 4-vCore is for large or business critical workloads. It supports online migrations, offline migrations, and faster migration speeds.
Reference:
https://azure.microsoft.com/pricing/details/database-migration/
https://docs.microsoft.com/en-us/azure/dms/tutorial-sql-server-azure-sql-online