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| Section | Objectives |
|---|---|
| Topic 1: Implement a secure environment | - Manage database authentication and authorization
|
| Topic 2: Plan and implement data platform resources | - Plan and configure security for the data platform
|
| Topic 3: Optimize query performance | - Analyze query performance
|
| Topic 4: Plan and implement a high availability and disaster recovery environment | - Backup and restore
|
| Topic 5: Perform automation | - Automate database tasks
|
| Topic 6: Monitor and optimize operational resources | - Optimize resources
|
偶然的なIT試験は常にあなたの勉強の目標になって、あなたの運命を変えるかもしれません。Microsoftの重要な認証科目として、DP-300試験に参加する人が多くなっています。我々の参考資料は試験の状況によって更新されています。それに、あなたは資料を購入したら、我々はDP-300資料の更新の第一時間であなたを知らせます。
質問 # 233
You have an Azure SQL database named DB1 that has strict auditing requirements.
You plan to enable ledger on DB1 and implement database verification by using automatic digest storage.
You need to configure the database isolation level for DB1 before you can run the verification stored procedures.
To what should you set Isolation level?
正解：B
解説：
By using the SNAPSHOT isolation level during verification, you ensure the integrity of your ledger data and detect any unauthorized modifications.
The database option ALLOW_SNAPSHOT_ISOLATION must be enabled on the database before you can run the ledger verification stored procedures. The appropriate isolation level to use for the verification process is the SNAPSHOT isolation level.
When you run the database verification using the
sys.sp_verify_database_ledger_from_digest_storage stored procedure, the database must have ALLOW_SNAPSHOT_ISOLATION set to ON. This ensures that the verification process operates on a consistent snapshot of the data, preventing potential inconsistencies from concurrent transactions that might interfere with the hash computations.
The following points detail the configuration and process:
Enabling the Option: You need to use the T-SQL command ALTER DATABASE
<database_name> SET ALLOW_SNAPSHOT_ISOLATION ON; to enable this setting.
Verification Process: The verification process itself involves executing a system stored procedure that recomputes the hashes stored in the database ledger and compares them against the stored digests to detect any tampering.
Default in Azure SQL DB: Note that in Azure SQL Database, the default isolation level is READ COMMITTED SNAPSHOT ISOLATION (RCSI), which uses row versioning and has ALLOW_SNAPSHOT_ISOLATION enabled by default, so in most cases the setting is already correctly configured.
Reference:
https://learn.microsoft.com/en-us/sql/relational-databases/security/ledger/ledger-database-verification
質問 # 234
You have an Azure AD tenant and a logical Microsoft SQL server named SQL1 that hosts several Azure SQL databases.
You plan to assign Azure AD users permissions to the databases automatically by using Azure Automation.
You need to create the required Automation accounts.
Which two accounts should you create? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
正解：A、E
質問 # 235
You have an Azure subscription that contains an Always On availability group named AG1. AG1 contains three replicas named Server1. Server2. and Server3.
You execute the following T-SQL statements 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.
正解：
解説：
Explanation:
Basic Concept: This question tests high availability and disaster recovery design for Azure SQL, SQL Server on Azure VMs, and regional failure scenarios.
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 an Always On availability group named AG1.
Why the alternate choices are Wrong: The alternate choices do not satisfy the stated availability design because quorum and listener resources must match Azure failover-cluster behavior and the required SLA.
質問 # 236
You have SQL Server 2019 on an Azure virtual machine that contains an SSISDB database.
A recent failure causes the master database to be lost.
You discover that all Microsoft SQL Server integration Services (SSIS) packages fail to run on the virtual machine.
Which four actions should you perform in sequence to resolve the issue? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct.
正解：
解説：
Explanation
Step 1: Attach the SSISDB database
Step 2: Turn on the TRUSTWORTHY property and the CLR property
If you are restoring the SSISDB database to an SQL Server instance where the SSISDB catalog was never created, enable common language runtime (clr) Step 3: Open the master key for the SSISDB database Restore the master key by this method if you have the original password that was used to create SSISDB.
open master key decryption by password = 'LS1Setup!' --'Password used when creating SSISDB' Alter Master Key Add encryption by Service Master Key Step 4: Encrypt a copy of the mater key by using the service master key Reference:
https://docs.microsoft.com/en-us/sql/integration-services/backup-restore-and-move-the-ssis-catalog
質問 # 237
Case Study 1 - Litware, Inc
Overview
Litware, Inc. is a renewable energy company that has a main office in Boston. The main office hosts a sales department and the primary datacenter for the company.
Physical Locations
Existing Environment
Litware has a manufacturing office and a research office is separate locations near Boston. Each office has its own datacenter and internet connection.
The manufacturing and research datacenters connect to the primary datacenter by using a VPN.
Network Environment
The primary datacenter has an ExpressRoute connection that uses both Microsoft peering and private peering. The private peering connects to an Azure virtual network named HubVNet.
Identity Environment
Litware has a hybrid Azure Active Directory (Azure AD) deployment that uses a domain named litwareinc.com. All Azure subscriptions are associated to the litwareinc.com Azure AD tenant.
Database Environment
The sales department has the following database workload:
An on-premises named SERVER1 hosts an instance of Microsoft SQL Server 2012 and two 1- TB databases.
A logical server named SalesSrv01A contains a geo-replicated Azure SQL database named SalesSQLDb1. SalesSQLDb1 is in an elastic pool named SalesSQLDb1Pool. SalesSQLDb1 uses database firewall rules and contained database users.
An application named SalesSQLDb1App1 uses SalesSQLDb1.
The manufacturing office contains two on-premises SQL Server 2016 servers named SERVER2 and SERVER3. The servers are nodes in the same Always On availability group. The availability group contains a database named ManufacturingSQLDb1 Database administrators have two Azure virtual machines in HubVnet named VM1 and VM2 that run Windows Server 2019 and are used to manage all the Azure databases.
Licensing Agreement
Litware is a Microsoft Volume Licensing customer that has License Mobility through Software Assurance.
Current Problems
SalesSQLDb1 experiences performance issues that are likely due to out-of-date statistics and frequent blocking queries.
Requirements
Planned Changes
Litware plans to implement the following changes:
Implement 30 new databases in Azure, which will be used by time-sensitive manufacturing apps that have varying usage patterns. Each database will be approximately 20 GB.
Create a new Azure SQL database named ResearchDB1 on a logical server named ResearchSrv01. ResearchDB1 will contain Personally Identifiable Information (PII) data.
Develop an app named ResearchApp1 that will be used by the research department to populate and access ResearchDB1.
Migrate ManufacturingSQLDb1 to the Azure virtual machine platform.
Migrate the SERVER1 databases to the Azure SQL Database platform.
Technical Requirements
Litware identifies the following technical requirements:
Maintenance tasks must be automated.
The 30 new databases must scale automatically.
The use of an on-premises infrastructure must be minimized.
Azure Hybrid Use Benefits must be leveraged for Azure SQL Database deployments.
All SQL Server and Azure SQL Database metrics related to CPU and storage usage and limits must be analyzed by using Azure built-in functionality.
Security and Compliance Requirements
Litware identifies the following security and compliance requirements:
Store encryption keys in Azure Key Vault.
Retain backups of the PII data for two months.
Encrypt the PII data at rest, in transit, and in use.
Use the principle of least privilege whenever possible.
Authenticate database users by using Active Directory credentials.
Protect Azure SQL Database instances by using database-level firewall rules.
Ensure that all databases hosted in Azure are accessible from VM1 and VM2 without relying on public endpoints.
Business Requirements
Litware identifies the following business requirements:
Meet an SLA of 99.99% availability for all Azure deployments.
Minimize downtime during the migration of the SERVER1 databases.
Use the Azure Hybrid Use Benefits when migrating workloads to Azure.
Once all requirements are met, minimize costs whenever possible.
Drag and Drop Question
You need to implement statistics maintenance for SalesSQLDb1. The solution must meet the technical requirements.
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.
正解：
解説：
Explanation:
Automating Azure SQL DB index and statistics maintenance using Azure Automation:
1. Create Azure automation account (Step 1)
2. Import SQLServer module (Step 2)
3. Add Credentials to access SQL DB
This will use secure way to hold login name and password that will be used to access Azure SQL DB
4. Add a runbook to run the maintenance (Step 3)
Steps:
1. Click on "runbooks" at the left panel and then click "add a runbook"
2. Choose "create a new runbook" and then give it a name and choose "Powershell" as the type of the runbook and then click on "create"
5. Schedule task (Step 4)
Steps:
1. Click on Schedules
2. Click on "Add a schedule" and follow the instructions to choose existing schedule or create a new schedule.
Reference:
https://techcommunity.microsoft.com/t5/azure-database-support-blog/automating-azure-sql-db-index-and-statistics-maintenance-using/ba-p/368974
質問 # 238
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