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Microsoft DP-420 Exam Dumps

Exam Name: Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB
Certification Name: Microsoft Certified: Azure Cosmos DB Developer Specialty

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  • Total Questions: 121
  • Last Updation Date: 16-Apr-2024

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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?

 

Create a container for Author and a container for Book. In each Author document,
embed bookId for each book by the author. In each Book document embed authorId of
each author.

 

Create Author, Book, and Bookauthorlnk documents in the same container.

 

Create a container that contains a document for each Author and a document for each
Book. In each Book document, embed authorId.

 

Create a container for Author and a container for Book. In each Author document and
Book document embed the data from Bookauthorlnk.


Create a container for Author and a container for Book. In each Author document,
embed bookId for each book by the author. In each Book document embed authorId of
each author.


Explanation:
Store multiple entity types in the same container.





You have a container in an Azure Cosmos DB Core (SQL) API account. The container
stores telemetry data from IoT devices. The container uses telemetryId as the partition key
and has a throughput of 1,000 request units per second (RU/s). Approximately 5,000 IoT
devices submit data every five minutes by using the same telemetryId value.
You have an application that performs analytics on the data and frequently reads telemetry
data for a single IoT device to perform trend analysis.
The following is a sample of a document in the container.

You need to reduce the amount of request units (RUs) consumed by the analytics
application.
What should you do?

 

Decrease the offerThroughput value for the container.

 

Increase the offerThroughput value for the container.

 

Move the data to a new container that has a partition key of deviceId.

 

Move the data to a new container that uses a partition key of date.


Move the data to a new container that has a partition key of deviceId.


Explanation:
The partition key is what will determine how data is routed in the various partitions by
Cosmos DB and needs to make sense in the context of your specific scenario. The IoT
Device ID is generally the "natural" partition key for IoT applications.
Reference: https://docs.microsoft.com/en-us/azure/architecture/solution-ideas/articles/iotusing-
cosmos-db





You have a database named telemetry in an Azure Cosmos DB Core (SQL) API account
that stores IoT data. The database contains two containers named readings and devices.
Documents in readings have the following structure.
id
deviceid
timestamp
ownerid
measures (array)
- type
- value
- metricid
Documents in devices have the following structure.
id
deviceid
owner
- ownerid
- emailaddress
- name
brand
model
For each of the following statements, select Yes if the statement is true. Otherwise, select
No.
NOTE: Each correct selection is worth one point.



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