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Microsoft DP-420 Exam Syllabus Topics:

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

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Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB Sample Questions (Q72-Q77):

NEW QUESTION # 72
You have an Azure Cosmos DB Core (SQL) API account named account1.
You have the Azure virtual networks and subnets shown in the following table.

The vnet1 and vnet2 networks are connected by using a virtual network peer.
The Firewall and virtual network settings for account1 are configured as shown in the exhibit.

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

Answer:

Explanation:


NEW QUESTION # 73
Vou have an Azure Cosmos DB for NoSQL account named Cosmos1 that has a container named orders.
You have an app that updates order documents throughout the day. and the documents must remain in orders for transactional queries.
You have an Azure Storage account named account1.
You need to implement an archive process that meets the following requirements,
* Archives each new order document to account1
* Archives each updated order document to account! as the update occurs
* Ensures that the archive process continues from the last processed change after a restart
* Scales across partitions without custom polling or custom checkpoint management What should you do?

Answer: A


NEW QUESTION # 74
You plan to implement con-iot1 and con-iot2.
You need to configure the default Time to Live setting for each container. The solution must meet the loT telemetry requirements.
What should you configure? To answer, select the appropriate options in the answer NOTE: Each correct selection is worth one point.

Answer:

Explanation:


NEW QUESTION # 75
You have a container named container1 in an Azure Cosmos DB for NoSQL account named account1.
You configure container1 to use Always Encrypted by using an encryption policy as shown in the C# and the Java exhibits. (Click the C# tab to view the encryption policy in C#. Click the Java tab to see the encryption policy in Java.)


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

Answer:

Explanation:

Explanation:
According to the Azure Cosmos DB documentation 1 , Always Encrypted is a feature designed to protect sensitive data, such as credit card numbers or national identification numbers, stored in Azure Cosmos DB.
Always Encrypted allows clients to encrypt sensitive data inside client applications and never reveal the encryption keys to the database.
To use Always Encrypted, you need to define an encryption policy for each container that specifies which properties should be encrypted and which data encryption keys (DEK) should be used. The DEKs are stored in Azure Cosmos DB and are wrapped by customer-managed keys (CMK) that are stored in Azure Key Vault.
Based on the encryption policy shown in the exhibits, the creditcard property is encrypted with a DEK named dek1, and the SSN property is encrypted with a DEK named dek2. Both DEKs are wrapped by a CMK named cmk1.
To answer your statements:
* You can perform a query that filters on the creditcard property = No . This is because the creditcard property is encrypted and cannot be used for filtering or sorting operations 1 .
* You can perform a query that filters on the SSN property = No . This is also because the SSN property is encrypted and cannot be used for filtering or sorting operations 1 .
* An application can be allowed to read the creditcard property while being restricted from reading the SSN property = Yes . This is possible by using different CMKs to wrap different DEKs and applying access policies on the CMKs in Azure Key Vault. For example, if you use cmk2 to wrap dek2 instead of cmk1, you can grant an application access to cmk1 but not cmk2, which means it can read the creditcard property but not the SSN property 2 .


NEW QUESTION # 76
You have an Azure Cosmos DB for NoSQL account.
You plan 10 create a container named container1. The container1 container will store items that include two properties named nm and age The most commonly executed queries will query container1 for a specific name. The following is a sample of the query.

You need to define an opt-in Indexing policy for container1. The solution must meet the following requirements:
* Minimize the number of request units consumed by the queries.
* Ensure that the _etag property is excluded from indexing.
How should you define the indexing poky? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection Is worth one point.

Answer:

Explanation:

Explanation:


NEW QUESTION # 77
......

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