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| Certification Vendor: | Microsoft |
|---|---|
| Exam Name: | Administering Relational Databases on Microsoft Azure |
| Exam Number: | DP-300 |
| Exam Price: | USD 165 (may vary by region) |
| Passing Score: | 700 (out of 1000) |
| Exam Duration: | 120 minutes |
| Certificate Validity Period: | 1 year (renewable annually) |
| Available Languages: | English, Traditional Chinese, Japanese, Simplified Chinese, Portuguese (Brazil), French, Spanish, German, Korean |
| Exam Format: | Case Studies, Multiple Choice, Multiple Response |
| Related Certifications: | Microsoft Certified: Azure Database Administrator Associate |
| Real Exam Qty: | 40-60 (approx.) |
| Recommended Training: | Microsoft Certified: Azure Database Administrator Associate Microsoft Learn DP-300 Learning Path |
| Exam Registration: | Microsoft Certification Exam DP-300 Page Pearson VUE Microsoft Exams |
| Sample Questions: | Microsoft DP-300 Sample Questions |
| Exam Way: | Online proctored or in-person at authorized testing centers (Pearson VUE). |
| Pre Condition: | No mandatory prerequisites, but familiarity with Azure fundamentals and relational database concepts is recommended. |
| Official Syllabus URL: | https://learn.microsoft.com/en-us/credentials/certifications/exams/dp-300/ |
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Microsoft DP-300 Exam consists of multiple-choice questions that cover various topics related to database administration in Azure, including deploying and configuring Azure SQL databases, securing databases, monitoring and optimizing performance, and implementing disaster recovery strategies. Candidates have 150 minutes to complete the exam and must achieve a passing score of 700 or higher.
NEW QUESTION # 53
You have an Azure subscription.
You plan to deploy a new Azure virtual machine that will host a Microsoft SQL Server instance.
You need to configure the disks on the virtual machine. The solution must meet the following requirements:
* Minimize latency for transaction logs.
* Minimize the impact on IO Of the virtual machine.
Which type of disk should you use for each workload? To answer. drag the appropriate disk types to the correct workloads. Each disk type may be used once, 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:
Graphical user interface, text, application Description automatically generated
NEW QUESTION # 54
Hotspot Question
You are building a multitenant software as a service (SaaS) app named App1 that stores tenant data in an Azure SQL database.
App1 has the following requirements:
- Support a high volume of read and write requests per tenant.
- Support strict data isolation for specific tenants.
You need to recommend a sharding solution that meets the following requirements:
- Ensures that each tenant with strict data isolation can be placed in
its own database
- Groups multiple tenants into a single database for cost efficiency
What should you include in the recommendation? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation:
Box 1: A list shard map and one key that maps to one shardlet.
A list shard map with a one-key-to-one-shardlet mapping is an excellent strategy for this requirement.
In Azure SQL Database Elastic Scale, this design perfectly aligns with the single-tenant (isolated) model needed for strict data compliance.
Guaranteed Isolation: Each strict-isolation tenant gets a unique tenant ID (the shard key). This key maps directly to its own dedicated database (the shardlet), ensuring zero data co-mingling.
High Performance: Dedicated databases eliminate the "noisy neighbor" effect. This allows each isolated tenant to utilize full, unshared compute resources (DTUs/vCores) to handle high read/write volumes.
Granular Scaling: You can scale resources up or down for specific high-volume tenants without affecting other users.
Easy Schema Management: Elastic Database tools allow you to run schema updates across all shards simultaneously, despite the physical separation.
Box 2: List shardlets so that each tenant always get a dedicated shard.
To support strict data isolation for specific tenants while grouping multiple other tenants into a single database for cost efficiency, you should use list shardlets (also known as list-based sharding).
The system requires a hybrid model.
Premium tenants need strict data isolation (their own dedicated database).Standard tenants need to be grouped together in shared databases to minimize costs.
List Shardlets: This strategy maps specific tenant IDs (keys) to specific databases. It allows you to explicitly assign a high-isolation tenant to its own database shardlet, while mapping a collection of standard tenant IDs to a shared database shardlet. This is the standard pattern used in Azure SQL Database Elastic Scale tools.
Incorrect:
Functional Partitioning: This separates data based on business function or subsystems (e.g., putting inventory data in one DB and billing data in another). It does not address multi-tenant isolation requirements.
Range Shardlets: This strategy groups data based on a range of keys (e.g., Tenant IDs 1-100 in Database A, 101-200 in Database B). It does not allow you to easily isolate a single, specific tenant into its own database without disrupting the continuous range logic.
Vertical Partitioning: This involves splitting a single table's columns across multiple databases (e.g., storing names in one DB and credit card info in another). It does not isolate tenants from each other.
Reference:
https://learn.microsoft.com/en-us/azure/architecture/best-practices/data-partitioning-strategies
https://www.everpuredata.com/knowledge/what-is-database-sharding.html
NEW QUESTION # 55
You have an Azure subscription that uses a domain named contoso.com.
You have two Azure VMs named DBServer1 and DBServer2. Each of them hosts a default SQL Server instance. DBServer1 is in the East US Azure region and contains a database named DatabaseA. DBServer2 is in the West US Azure region.
DBServer1 has a high volume of data changes and low latency requirements for data writes.
You need to configure a new availability group for DatabaseA. The secondary replica will reside on DBServer2.
What should you do?
Answer: A
Explanation:
Reference:
https://docs.microsoft.com/en-us/sql/database-engine/availability-groups/windows/availability-modes-always- on-availability-groups?view=sql-server-ver15 Basic Concept: This question tests high availability and disaster recovery design for Azure SQL, SQL Server on Azure VMs, and regional failure scenarios.
Why C is Correct: Configure the primary endpoint as TCP://DBServer1.contoso.com:5022, configure the secondary endpoint as TCP://DBServer2.contoso.com:5022, and set the availability mode to Asynchronous. is part of the availability or recovery design space, but the correct choice must satisfy the specified failover, restore, quorum, RPO, or RTO requirement. This fits the case because the requested outcome is: DBServer1 has a high volume of data changes and low latency requirements for data writes. The selected feature addresses that outcome directly rather than relying on a workaround.
Why A is Wrong: Configure the primary endpoint as TCP://DBServer1.contoso.com:445, configure the secondary endpoint as TCP://DBServer2.contoso.com:445, and set the availability mode to Asynchronous. is part of the availability or recovery design space, but the correct choice must satisfy the specified failover, restore, quorum, RPO, or RTO requirement. It is not wrong technology in general, but it is the wrong HA/DR control for this scenario ' s failure model.
Why B is Wrong: Configure the primary endpoint as TCP://DBServer1.contoso.com:445, configure the secondary endpoint as TCP://DBServer2.contoso.com:445, and set the availability mode to Synchronous. is part of the availability or recovery design space, but the correct choice must satisfy the specified failover, restore, quorum, RPO, or RTO requirement. It does not meet the failover, restore, quorum, or cross-region continuity target stated in the question, even if it is valid in a different availability design.
Why D is Wrong: Configure the primary endpoint as TCP://DBServer1.contoso.com:5022, configure the secondary endpoint as TCP://DBServer2.contoso.com:5022, and set the availability mode to Synchronous. is part of the availability or recovery design space, but the correct choice must satisfy the specified failover, restore, quorum, RPO, or RTO requirement. It is not wrong technology in general, but it is the wrong HA/DR control for this scenario ' s failure model.
NEW QUESTION # 56
You have a database on a SQL Server on Azure Virtual Machines instance.
The current state of Query Store for the database is shown in the following exhibit.
Answer:
Explanation:
NEW QUESTION # 57
You have two Azure virtual machines named VM1 and VM2 that run Windows Server 2019. VM1 and VM2 each host a default Microsoft SQL Server 2019 instance. VM1 contains a database named DB1 that is backed up to a file named D:\DB1.bak.
You plan to deploy an Always On availability group that will have the following configurations:
* VM1 will host the primary replica of DB1.
* VM2 will host a secondary replica of DB1.
You need to prepare the secondary database on VM2 for the availability group.
How should you complete the Transact-SQL statement? To answer, select the appropriate options in the answer area.
Answer:
Explanation:
Explanation:
Reference:
https://docs.microsoft.com/en-us/sql/database-engine/availability-groups/windows/manually-prepare-a-secondary
NEW QUESTION # 58
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