DP-420 Prüfungsfragen Prüfungsvorbereitungen, DP-420 Fragen und Antworten, Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB

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Microsoft DP-420 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Optimize an Azure Cosmos DB solution15-20%- Define and implement indexing strategy
  • 1. Choose read-heavy or write-heavy indexing
  • 2. Implement composite indexes
  • 3. Configure custom indexing policies
  • 4. Optimize index performance
  • 5. Choose appropriate index types
- Design and implement change feeds
  • 1. Develop Azure Functions triggers
  • 2. Manage change feed instances
  • 3. Consume change feeds using SDK
  • 4. Implement aggregation persistence
- Optimize query performance
  • 1. Adjust indexing policies
  • 2. Calculate query cost
  • 3. Implement integrated cache
  • 4. Retrieve request unit cost
Topic 2: Design and implement data models35-40%- Implement data access
  • 1. Implement optimistic concurrency control
  • 2. Use consistency and query request options
  • 3. Implement patch operations
  • 4. Manage transactional batch operations
  • 5. Implement SQL queries with arrays and aggregation
  • 6. Use SDKs for CRUD operations
- Plan and implement sizing and scaling
  • 1. Evaluate throughput and storage requirements
  • 2. Choose between serverless, provisioned, and free tier
  • 3. Design resource governance and scaling
  • 4. Configure throughput
  • 5. Evaluate global distribution costs
- Design and implement a non-relational data model for Azure Cosmos DB for NoSQL
  • 1. Identify partition key, id, and unique keys
  • 2. Denormalize data across documents
  • 3. Store multiple related entities in the same document
  • 4. Identify data and associated access patterns
  • 5. Reference between documents
  • 6. Store multiple entity types in the same container
- Design a data partitioning strategy
  • 1. Choose a partition key
  • 2. Evaluate throughput and data distribution
  • 3. Evaluate cross-partition query cost
  • 4. Choose a partitioning strategy
  • 5. Plan for transactions with partition keys
  • 6. Implement synthetic partition keys
- Implement client connectivity options
  • 1. Configure client-side threading and logging
  • 2. Handle connection errors
  • 3. Implement singleton client
  • 4. Choose gateway or direct connectivity mode
  • 5. Create database connections
  • 6. Use Azure Cosmos DB emulator
- Implement server-side programming
  • 1. Write and deploy stored procedures
  • 2. Implement triggers
  • 3. Implement user-defined functions
Topic 3: Integrate an Azure Cosmos DB solution5-10%- Implement solutions across services
  • 1. Use Change Feed for denormalization
  • 2. Integrate Azure Functions and Event Hubs
  • 3. Implement Azure AI Search integration
  • 4. Aggregate and archive data
  • 5. Enforce referential integrity
- Enable analytical workloads
  • 1. Query analytical store from Synapse
  • 2. Enable analytical store
  • 3. Configure Azure Cosmos DB Mirroring
  • 4. Write data back from Spark
Topic 4: Design and implement data distribution5-10%- Design and implement multi-region writes
  • 1. Implement multi-region writes
  • 2. Choose when to use multi-region writes
  • 3. Implement conflict resolution policies
- Design and implement replication strategy
  • 1. Choose when to distribute data
  • 2. Perform manual failovers
  • 3. Define automatic failover policies
  • 4. Choose a consistency model
  • 5. Evaluate consistency model impacts
Topic 5: Maintain an Azure Cosmos DB solution25-30%- Monitor and troubleshoot Azure Cosmos DB solutions
  • 1. Troubleshoot throughput issues
  • 2. Monitor metrics and logs
  • 3. Monitor performance and availability
  • 4. Implement backup and recovery strategies

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DP-420 PrüfungGuide, Microsoft DP-420 Zertifikat - Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB

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Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB DP-420 Prüfungsfragen mit Lösungen (Q95-Q100):

95. Frage
You have an Azure Cosmos DB Core (SQL) API account named account1.
In account1, you run the following query in a container that contains 100GB of data.
SELECT *
FROM c
WHERE LOWER(c.categoryid) = "hockey"
You view the following metrics while performing the query.

For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.

Antwort:

Begründung:

Explanation

Box 1: No
Each physical partition should have its own index, but since no index is used, the query is not cross-partition.
Box 2: No
Index utilization is 0% and Index Look up time is also zero.
Box 3: Yes
A partition key index will be created, and the query will perform across the partitions.
Reference: https://docs.microsoft.com/en-us/azure/cosmos-db/sql/how-to-query-container


96. Frage
Vou have an Azure subscription. The subscription contains an Azure Cosmos DB for NoSQL account named account1 that hosts a container named Customers. Multi-region writes are allowed.
You execute the following C# code.

For each of the following statements, Select Yes if the statement is true, Otherwise, select No.
NOTE: Each correct selection is worth one point.

Antwort:

Begründung:

Explanation:


97. Frage
You have an Azure subscription that contains a resource group named RG1. RG1 contains an Azure Cosmos DB for NoSQL account named account1.
You plan to audit changes to the control plane of account1.
You need to ensure that audit events include the details of the security principal that performs each control plane change.
How should you complete the az command? To answer select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Antwort:

Begründung:

Explanation:


98. Frage
You are creating a database in an Azure Cosmos DB Core (SQL) API account. The database will be used by an application that will provide users with the ability to share online posts. Users will also be able to submit comments on other users' posts.
You need to store the data shown in the following table.

The application has the following characteristics:
Users can submit an unlimited number of posts.
The average number of posts submitted by a user will be more than 1,000.
Posts can have an unlimited number of comments from different users.
The average number of comments per post will be 100, but many posts will exceed 1,000 comments.
Users will be limited to having a maximum of 20 interests.
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.

Antwort:

Begründung:

Explanation

Box 1: Yes
Non-relational data increases write costs, but can decrease read costs.
Box 2: Yes
Non-relational data increases write costs, but can decrease read costs.
Box 3: No
Non-relational data increases write costs, but can decrease read costs.


99. Frage
You have an application that queries an Azure Cosmos 06 for NoSQL account.
You discover that the following two queries run frequently,

You need to minimize the request units (RUs) consumed by reads and writes. What should you create?

Antwort: D


100. Frage
......

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