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Microsoft DP-420 Exam Syllabus Topics:

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

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Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB Sample Questions (Q248-Q253):

NEW QUESTION # 248
You have a container named container1 in an Azure Cosmos DB Core (SQL) API account.
The following is a sample of a document in container1.
{
"studentId": "631282",
"firstName": "James",
"lastName": "Smith",
"enrollmentYear": 1990,
"isActivelyEnrolled": true,
"address": {
"street": "",
"city": "",
"stateProvince": "",
"postal": "",
}
}
The container1 container has the following indexing policy.
{
"indexingMode": "consistent",
"includePaths": [
{
"path": "/*"
},
{
"path": "/address/city/?"
}
],
"excludePaths": [
{
"path": "/address/*"
},
{
"path": "/firstName/?"
}
]
}
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
"path": "/*" is in includePaths.
Include the root path to selectively exclude paths that don't need to be indexed. This is the recommended approach as it lets Azure Cosmos DB proactively index any new property that may be added to your model.
Box 2: No
"path": "/firstName/?" is in excludePaths.
Box 3: Yes
"path": "/address/city/?" is in includePaths
Reference: https://docs.microsoft.com/en-us/azure/cosmos-db/index-policy


NEW QUESTION # 249
You have an Azure Cosmos DB for NoSQL account named account that has the disablekeyBasedletadatwriteAccess property enabled.
You are developing an app named App1 that will be used by a use1 named DevUser1 to create containers in account1. DevUser1 has a non-privileged user account in the Azure AD tenant.
You need to ensure that DevUser1 can use App1 to create containers in account1.
What should you do? To answer, select the appropriate options in the answer area.
NOTE Each correct selection is worth one point.

Answer:

Explanation:

Explanation:


NEW QUESTION # 250
You configure Azure Cognitive Search to index a container in an Azure Cosmos DB Core (SQL) API account as shown in the following exhibit.

Use the drop-down menus to select the answer choice that completes each statement based on the information presented in the graphic.
NOTE: Each correct selection is worth one point.

Answer:

Explanation:

Explanation

Box 1: country
The country field is filterable.
Note: filterable: Indicates whether to enable the field to be referenced in $filter queries. Filterable differs from searchable in how strings are handled. Fields of type Edm.String or Collection(Edm.String) that are filterable do not undergo lexical analysis, so comparisons are for exact matches only.
Box 2: name
The name field is not Retrievable.
Retrievable: Indicates whether the field can be returned in a search result. Set this attribute to false if you want to use a field (for example, margin) as a filter, sorting, or scoring mechanism but do not want the field to be visible to the end user.
Note: searchable: Indicates whether the field is full-text searchable and can be referenced in search queries.
Reference: https://docs.microsoft.com/en-us/rest/api/searchservice/create-index


NEW QUESTION # 251
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.

Answer:

Explanation:

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.


NEW QUESTION # 252
Hotspot Question
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:


NEW QUESTION # 253
......

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