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Die Microsoft DP-420 Prüfung richtet sich an Entwickler, Architekten und Datenbankadministratoren mit Erfahrung in Cloud Computing, Azure und NoSQL Datenmanagement. Kandidaten, die die DP-420 Prüfung bestehen, können ihre Kompetenz in der Gestaltung und Umsetzung von cloud-nativen Anwendungen unter Verwendung von Azure Cosmos DB demonstrieren. Sie haben auch die Fähigkeit, Lösungen zu erstellen, die global skalieren, hohe Verfügbarkeit bieten und effizient arbeiten. Das Bestehen dieser Prüfung ist eine hervorragende Möglichkeit, Ihre Kompetenz in der Entwicklung von cloud-nativen Anwendungen zu demonstrieren und Ihre Vermarktungschancen als Fachkraft zu erhöhen.
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Die Microsoft DP-420-Prüfung besteht aus Multiple-Choice-Fragen und leistungsbasierten Labors. Die Prüfung deckt eine Reihe von Themen ab, darunter das Entwerfen und Implementieren von Containern, das Entwerfen und Implementieren von Azure -Cosmos -DB -Datenbanken, Datenzugriff und Datenspeicherung. Die Prüfung umfasst auch Themen im Zusammenhang mit Sicherheit, Überwachung und Fehlerbehebung von Azure Cosmos DB -Anwendungen.
13. Frage
You have an Azure Cosmos DB account named accounts
You need to access account1 from an on-premises environment by using a Site-to-Site VPN. What should you use?
Antwort: C
14. Frage
You have an Azure Cosmos DB account named account1.
You have several apps that connect to account1 by using the account's secondary key.
You then configure the apps to authenticate by using service principals.
You need to ensure that account1 will only allow apps to connect by using an Azure AD identity.
Which account property should you modify?
Antwort: C
Begründung:
https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-setup-rbac#disable-local-auth
15. Frage
Case Study 1 - Litware, inc
Overview
Litware, Inc. is a United States-based grocery retailer. Litware has a main office and a primary datacenter in Seattle. The company has 50 retail stores across the United States and an emerging online presence. Each store connects directly to the internet. Existing environment.
Cloud and Data Service Environments. Litware has an Azure subscription that contains the resources shown in the following table.
Each container in productdb is configured for manual throughput. The con-product container stores the company's product catalog data. Each document in con-product includes a con- productvendor value. Most queries targeting the data in con-product are in the following format.
SELECT * FROM con-product p WHERE p.con-productVendor - 'name'
Most queries targeting the data in the con-productVendor container are in the following format SELECT * FROM con-productVendor pv ORDER BY pv.creditRating, pv.yearFounded Existing environment.
Current Problems.
Litware identifies the following issues:
- Updates to product categories in the con-productVendor container do not propagate automatically to documents in the con-product container.
- Application updates in con-product frequently cause HTTP status code 429 "Too many requests".
- You discover that the 429 status code relates to excessive request unit (RU) consumption during the updates.
Requirements.
Planned Changes
Litware plans to implement a new Azure Cosmos DB for NoSQL account named account2 that will contain a database named iotdb. The iotdb database will contain two containers named con- iot1 and con-iot2.
Litware plans to make the following changes:
- Store the telemetry data in account2.
- Configure account1 to support multiple read-write regions.
- Implement referential integrity for the con-product container.
- Use Azure Functions to send notifications about product updates to different recipients.
- Develop an app named App1 that will run from all locations and query the data in account1.
- Develop an app named App2 that will run from the retail stores and query the data in account2.
- App2 must be limited to a single DNS endpoint when accessing account2.
Requirements.
Business Requirements
Litware identifies the following business requirements:
- Whenever there are multiple solutions for a requirement, select the solution that provides the best performance, as long as there are no additional costs associated.
- Ensure that Azure Cosmos DB costs for IoT-related processing are predictable.
- Minimize the number of firewall changes in the retail stores.
Requirements.
Product Catalog Requirements
Litware identifies the following requirements for the product catalog:
- Implement a custom conflict resolution policy for the product catalog data.
- Minimize the frequency of errors during updates of the con-product container.
- Once multi-region writes are configured, maximize the performance of App1 queries against the data in account1.
- Trigger the execution of two Azure functions following every update to any document in the con- product container.
Hotspot Question
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 IoT telemetry requirements.
What should you configure? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Antwort:
Begründung:
Explanation:
Box 1: On (3,600 seconds)
Note: Litware identifies the following IoT telemetry requirements:
Automatically delete items in con-iot1 after one hour unless a per-item time to live is set.
Box 2: Off
Ensure that the items in con-iot2 persist regardless of the per-item time to live setting.
Reference:
https://docs.microsoft.com/en-us/azure/cosmos-db/sql/time-to-live
16. Frage
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You have a container named container1 in an Azure Cosmos DB Core (SQL) API account.
You need to make the contents of container1 available as reference data for an Azure Stream Analytics job.
Solution: You create an Azure function that uses Azure Cosmos DB Core (SQL) API change feed as a trigger and Azure event hub as the output.
Does this meet the goal?
Antwort: A
Begründung:
The Azure Cosmos DB change feed is a mechanism to get a continuous and incremental feed of records from an Azure Cosmos container as those records are being created or modified. Change feed support works by listening to container for any changes. It then outputs the sorted list of documents that were changed in the order in which they were modified.
The following diagram represents the data flow and components involved in the solution:
Reference: https://docs.microsoft.com/en-us/azure/cosmos-db/sql/changefeed-ecommerce-solution
17. Frage
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You have a container named container1 in an Azure Cosmos DB Core (SQL) API account.
You need to make the contents of container1 available as reference data for an Azure Stream Analytics job.
Solution: You create an Azure function that uses Azure Cosmos DB Core (SQL) API change feed as a trigger and Azure event hub as the output.
Does this meet the goal?
Antwort: B
Begründung:
Explanation
The Azure Cosmos DB change feed is a mechanism to get a continuous and incremental feed of records from an Azure Cosmos container as those records are being created or modified. Change feed support works by listening to container for any changes. It then outputs the sorted list of documents that were changed in the order in which they were modified.
The following diagram represents the data flow and components involved in the solution:
Reference: https://docs.microsoft.com/en-us/azure/cosmos-db/sql/changefeed-ecommerce-solution
18. Frage
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