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Microsoft DP-420 Exam Syllabus Topics:

Section	Objectives
Design and implement data distribution	- Replication and consistency 1. Consistency levels 2. Multi-region replication - Partitioning and scaling 1. Throughput (RU/s) planning 2. Logical and physical partitions
Integrate Azure Cosmos DB with Azure services	- Data pipelines and analytics 1. Synapse integration 2. Data movement patterns - Event-driven architectures 1. Change Feed processing 2. Integration with Azure Functions
Optimize and maintain Cosmos DB solutions	- Monitoring and troubleshooting 1. Diagnostics and logging 2. Alerts and metrics - Performance optimization 1. RU consumption optimization 2. Query performance tuning
Design and implement data models for Azure Cosmos DB	- Model data for NoSQL workloads 1. Partitioning strategies 2. Data modeling patterns (embed vs reference) - Design indexing strategies 1. Query optimization considerations 2. Indexing policies

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Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB Sample Questions (Q203-Q208):

NEW QUESTION # 203
You maintain a relational database for a book publisher. The database contains the following tables.

The most common query lists the books for a given authorId.
You need to develop a non-relational data model for Azure Cosmos DB Core (SQL) API that will replace the relational database. The solution must minimize latency and read operation costs.
What should you include in the solution?

A. Create Author, Book, and Bookauthorlnk documents in the same container.
B. Create a container that contains a document for each Author and a document for each Book. In each Book document, embed authorId.
C. Create a container for Author and a container for Book. In each Author document and Book document embed the data from Bookauthorlnk.
D. Create a container for Author and a container for Book. In each Author document, embed booked for each book by the author. In each Book document embed author of each author.

Answer: D

Explanation:
Store multiple entity types in the same container.

NEW QUESTION # 204
Hotspot Question
You have a database in an Azure Cosmos DB Core (SQL) API account.
You plan to create a container that will store employee data for 5,000 small businesses. Each business will have up to 25 employees. Each employee item will have an emailAddress value.
You need to ensure that the emailAddress value for each employee within the same company is unique.
To what should you set the partition key and the unique key? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Answer:

Explanation:

Explanation:
Box 1: CompanyID
After you create a container with a unique key policy, the creation of a new or an update of an existing item resulting in a duplicate within a logical partition is prevented, as specified by the unique key constraint. The partition key combined with the unique key guarantees the uniqueness of an item within the scope of the container.
For example, consider an Azure Cosmos container with Email address as the unique key constraint and CompanyID as the partition key. When you configure the user's email address with a unique key, each item has a unique email address within a given CompanyID. Two items can't be created with duplicate email addresses and with the same partition key value.
Box 2: emailAddress
UniqueKey will need to be set to emailAddress, since the job of a unique key is to ensure uniqueness of a value within a logical partition.
Reference: https://docs.microsoft.com/en-us/azure/cosmos-db/unique-keys

NEW QUESTION # 205
You have an Azure subscription that contains an Azure Cosmos DB for NoSQL account. The account contains a database named DB1 and an Azure Key Vault named KV1.
You need to create a container named Container1 in DB1. The solution must ensure that the properties of the items in Container1 are encrypted by using Always Encrypted.
Which four actions should you perform in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.

Answer:

Explanation:

Explanation:

NEW QUESTION # 206
You provision an Azure Cosmos DB for NoSQL container. You set the throughput to Autoscale, and the maximum request units per second {RU/s) to 20,000.
For how many RU/s will you be charged when the actual RU/s usage is zero?

A. 10,000
B. 0
C. 4,000
D. 2,000
E. 1

Answer: B

NEW QUESTION # 207
You have a database in an Azure Cosmos DB SQL API Core (SQL) account that is used for development.
The database is modified once per day in a batch process.
You need to ensure that you can restore the database if the last batch process fails. The solution must minimize costs.
How should you configure the backup settings? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Answer:

Explanation:

Explanation:

NEW QUESTION # 208
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