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Microsoft DP-420 Exam Syllabus Topics:

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

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Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB Sample Questions (Q54-Q59):

NEW QUESTION # 54
You have an on-premises network.
You have an Azure subscription that contains an Azure Cosmos DB account named account1 and an Azure virtual network named VNet1. VNet1 contains two virtual machines named VM1 and VM2. VNet1 is connected to the on-premises network by using a Site-to-Site (S2S) VPN.
You need to meet the following requirements:
* Block access to the public endpoint of account1.
* Allow only VM1 to access account1.
What should you include in the solution? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Answer:

Explanation:

Explanation:


NEW QUESTION # 55
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?

Answer: D


NEW QUESTION # 56
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:

Explanation:

Box 1: Yes
VM1 is on vnet1.subnet1 which has the Endpoint Status enabled.
Box 2: No
Only virtual network and their subnets added to Azure Cosmos account have access. Their peered VNets cannot access the account until the subnets within peered virtual networks are added to the account.
Box 3: No
Only virtual network and their subnets added to Azure Cosmos account have access.
Reference: https://docs.microsoft.com/en-us/azure/cosmos-db/how-to-configure-vnet-service-endpoint


NEW QUESTION # 57
You have a container named container1 in an Azure Cosmos DB Core (SQL) API account.
You need to provide a user named User1 with the ability to insert items into container1 by using role-based access control (RBAC). The solution must use the principle of least privilege.
Which roles should you assign to User1?

Answer: C

Explanation:
Explanation
Cosmos DB Operator: Can provision Azure Cosmos accounts, databases, and containers. Cannot access any data or use Data Explorer.
Reference: https://docs.microsoft.com/en-us/azure/cosmos-db/role-based-access-control


NEW QUESTION # 58
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.

Answer:

Explanation:


NEW QUESTION # 59
......

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