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Microsoft DP-300 Exam Syllabus Topics:

Section	Weight	Objectives
Optimize query performance	15–20%	- Analyze query execution plans 1. Interpret execution plans and statistics 2. Identify bottlenecks and inefficiencies 3. Evaluate index usage and design - Improve query performance 1. Use query store and performance tuning tools 2. Create and modify indexes 3. Optimize T-SQL code and constructs - Manage workload performance 1. Control resource usage and concurrency 2. Troubleshoot slow-running queries 3. Implement partitioning and compression
Plan and configure high availability and disaster recovery	20–25%	- Configure high availability solutions 1. Implement failover groups and auto-failover 2. Test and monitor HA/DR operations 3. Configure Always On availability groups - Design HA/DR strategy 1. Define RPO and RTO requirements 2. Evaluate hybrid and cross-region options 3. Choose between built-in and custom solutions - Implement backup and restore 1. Manage backup storage and costs 2. Perform point-in-time and long-term retention restores 3. Configure automated backups and retention
Implement a secure environment	20–25%	- Configure authentication and authorization 1. Implement Microsoft Entra ID authentication 2. Manage database users, roles, and permissions 3. Apply least privilege principle - Implement compliance and security controls 1. Implement data masking and classification 2. Configure auditing and logging 3. Assess and remediate vulnerabilities - Secure data at rest and in transit 1. Configure encryption for connections and data transfer 2. Manage keys and certificates 3. Implement Transparent Data Encryption
Monitor and optimize operational resources	15–20%	- Optimize resource consumption 1. Implement auto-scaling and elasticity 2. Adjust compute, storage, and tier settings 3. Manage costs and licensing - Monitor database performance and health 1. Identify and diagnose performance issues 2. Use Azure Monitor, SQL Insights, and metrics 3. Set up alerts and notifications - Automate maintenance and operations 1. Manage database lifecycle operations 2. Automate tasks using jobs, scripts, or Logic Apps 3. Schedule and perform updates and patches
Plan and implement data platform resources	15–20%	- Deploy database resources 1. Configure resources for scale and performance 2. Automate deployment using templates, PowerShell, or CLI 3. Deploy Azure SQL Database, Managed Instance, and SQL Server on Azure VMs - Plan deployment of database offerings 1. Evaluate deployment options for Azure SQL services 2. Identify use cases for hybrid and multi-cloud solutions 3. Plan for scalability and performance requirements - Implement migration strategies 1. Perform offline and online migrations 2. Evaluate migration requirements and strategies 3. Migrate between Azure services or from on-premises

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Microsoft Administering Relational Databases on Microsoft Azure DP-300 Prüfungsfragen mit Lösungen (Q456-Q461):

456. Frage
You have a SQL pool in Azure Synapse that contains a table named dbo.Customers. The table contains a column name Email.
You need to prevent nonadministrative users from seeing the full email addresses in the Email column. The users must see values in a format of aXXX@XXXX.com instead.
What should you do?

A. From Microsoft SQL Server Management Studio, grant the SELECT permission to the users for all the columns in the dbo.Customers table except Email.
B. From the Azure portal, set a mask on the Email column.
C. From the Azure portal, set a sensitivity classification of Confidential for the Email column.
D. From Microsoft SQL Server Management Studio, set an email mask on the Email column.

Antwort: C

Begründung:
Explanation
The Email masking method, which exposes the first letter and replaces the domain with XXX.com using a constant string prefix in the form of an email address.
Example: aXX@XXXX.com

457. Frage
You have an on-premises Microsoft SQL Server 2019 instance named SQL1 that hosts a mission-critical database.
You have an Azure subscription.
The on-premises network connects to Azure by using a Site-to-Site (S2S) VPN.
You plan to add a secondary database in Azure for cross-site disaster recovery, while keeping the production workload on-premises.
You need to recommend the high-availability and disaster recovery (HADR) configuration for the Azure replica. The solution must meet the following requirements:
Provide database-level protection.
Support a hybrid deployment between on-premises and Azure.
Minimize the risk that network latency will affect the primary workload.
What should you recommend?

A. Always On availability groups with a synchronous-commit replica on SQL Server on Azure Virtual Machines
B. active geo-replication on Azure SQL Database
C. failover cluster instances (FCIs) on SQL Server on Azure Virtual Machines
D. Always On availability groups with an asynchronous-commit replica on SQL Server on Azure Virtual Machines

Antwort: D

458. Frage
You have an Azure subscription.
You need to deploy an Azure SQL managed instance that meets the following requirements:
* Optimize latency.
* Maximize the memory-to-vCore ratio.
Which service tier and hardware generation should you use? To answer, select the apocopate options in the answer area.
NOTE: Each correct selection is worth one point.

Antwort:

Begründung:

Explanation:

Basic Concept: This question tests Azure SQL sizing and purchasing choices, where compute model, scaling behavior, licensing benefits, and cost pattern must be evaluated together.
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 need to deploy an Azure SQL managed instance that meets the following requirements: * Optimize latency.
Why the alternate choices are Wrong: The alternate selections apply to different administrative stages or different scopes. In a hotspot or drag-drop task, order and scope are part of the answer, so a technically valid Azure feature can still be wrong if it is placed in the wrong step.

459. Frage
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?

Antwort: A

460. Frage
You have an Azure subscription that contains an Azure SQL database named DB1.
Users report that DB1 has query performance issues.
You need to ensure that you can move specific tables in DB1 to In-Memory OLTP.
How should you complete the T-SQL statement? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Antwort:

Begründung:

Explanation:

Basic Concept: This question tests performance optimization for SQL workloads, including Query Store, automatic tuning, index/statistics maintenance, and engine-level resource behavior.
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 need to ensure that you can move specific tables in DB1 to In-Memory OLTP.
Why the alternate choices are Wrong: The alternate selections apply to different administrative stages or different scopes. In a hotspot or drag-drop task, order and scope are part of the answer, so a technically valid Azure feature can still be wrong if it is placed in the wrong step.

461. Frage
......

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