Microsoft DP-420J exam dumps - Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB (DP-420日本語版)
- Exam Code: DP-420J
- Exam Name: Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB (DP-420日本語版)
- Updated: Nov 04, 2026 Q & A: 206 Questions and Answers
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Microsoft DP-420: Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB Exam is a certification exam that measures the candidate's proficiency in developing and implementing cloud-native applications using Microsoft Azure Cosmos DB. DP-420J exam is designed to test the candidate's skills and knowledge in building and managing distributed applications that can scale and perform efficiently in the cloud.
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Microsoft DP-420 exam covers a wide range of topics, including designing and implementing Azure Cosmos DB databases, developing for scalability and performance, managing data in Azure Cosmos DB, and integrating Azure Cosmos DB with other Azure services. DP-420J exam also includes questions related to security and compliance, as well as monitoring and troubleshooting Azure Cosmos DB applications. Passing DP-420J exam validates the candidate's ability to design and implement cloud-native applications using Azure Cosmos DB, making them a valuable asset to any organization leveraging Azure services.
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Microsoft DP-420 certification exam covers a wide range of topics, including Azure Cosmos DB's architecture, data modeling, partitioning, global distribution, and security. Professionals who pass DP-420J exam will have a strong understanding of how to design and implement cloud-native applications using Azure Cosmos DB's APIs and SDKs. They will also be able to optimize performance, troubleshoot common issues, and monitor the health of their Azure Cosmos DB instances.
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Microsoft DP-420 exam is suitable for developers, architects, and IT professionals who work with Azure Cosmos DB. Candidates who pass DP-420J exam will have a thorough understanding of the Azure Cosmos DB architecture, the design principles of cloud-native applications, and the best practices for implementing and deploying them.
Reference: https://docs.microsoft.com/en-us/learn/certifications/exams/dp-420?WT.mc_id=Azure_blog-wwl
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Microsoft DP-420日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Integrate an Azure Cosmos DB solution | 5-10% | - Enable analytical workloads
|
| Topic 2: Maintain an Azure Cosmos DB solution | 25-30% | - Manage data movement
|
| Topic 3: Design and implement data models | 35-40% | - Plan sizing and scaling
|
| Topic 4: Optimize an Azure Cosmos DB solution | 15-20% | - Optimize query performance
|
| Topic 5: Design and implement data distribution | 5-10% | - Manage data distribution and failover
|
Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB (DP-420日本語版) Sample Questions:
Azure Cosmos DB Core (SQL) API アカウントに、IoT データを保存する telemetry という名前のデータベースがあります。
データベースには、「readings」と「devices」という名前の2つのコンテナが含まれています。
読解資料は以下の構造になっています。
ID
デバイスID
タイムスタンプ
オーナー
測定値(配列)
- タイプ
- 価値
- メトリックID
デバイス内の文書は、以下の構造を持ちます。
ID
デバイスID
所有者
- オーナー
- 電子メールアドレス
- 名前
ブランド
モデル
以下の各記述について、正しい場合は「はい」を選択してください。そうでない場合は「いいえ」を選択してください。
注：正解ごとに1ポイントが加算されます。
Correct Answer:
Explanation:
Box 1: Yes
Need to join readings and devices.
Box 2: No
Only readings is required. All required fields are in readings.
Box 3: No
Only devices is required. All required fields are in devices.
Azure Cosmos DB for NoSQL アカウントにコンテナがあります。このコンテナには、家族に関するデータが格納されています。
親、子供、ペットに関するデータは、それぞれ別の文書として保存されます。
各文書には、各家族の住所が含まれています。同じ家族のメンバーは、family Id という名前の同じパーティションキーを共有します。同じ住所を共有する同じ家族のメンバーそれぞれの住所を更新する必要があります。解決策は以下の要件を満たす必要があります。
* 原子的に一貫性があり、孤立していて、耐久性がある(酸性)。
* 最低限の遅延を実現します。
あなたはどうすべきですか？
- A. トランザクションバッチ操作を使用して、各家族メンバーのドキュメントを更新します。
- B. 各家族メンバーの文書を個別に更新し、一貫性レベルを「強」に設定します。
- C. パッチ操作を使用して、各家族メンバーの文書を個別に更新します。
Correct Answer: A 🗳️
あなたは、Azure Cosmos DB for NoSQL アカウントに接続するアプリケーションを開発しています。このアカウントには、readme リージョンが 1 つと、アゴナル読み取りリージョンが 1 つあります。これらのリージョンは、自動フェールオーバーが構成されています。
このアカウントには以下の接続文字列が含まれています。(行番号は参考のために記載しています。)
以下の各記述について、正しい場合は「はい」を選択し、そうでない場合は「いいえ」を選択してください。
注：正解ごとに1ポイントが加算されます。
Correct Answer:
Explanation:
If the primary write region fails, applications that write to the database must use a different connection string to continue to use the service. = NO You do not need to use a different connection string to continue to use the service if the primary write region fails. This is because Azure Cosmos DB supports automatic failover, which means that it will automatically switch the primary write region to another region in case of a regional outage2. The application does not need to change the connection string or specify the failover priority3. The connection string contains a list of all the regions associated with your account, and Azure Cosmos DB will route the requests to the appropriate region based on the availability and latency1.
The primary Read-Only SQL Connection String and the Secondary Read-Only SQL Connection String will connect to different regions from an application running in the East US Azure region = Yes The primary read-only SQL connection string and the secondary read-only SQL connection string will connect to different regions from an application running in the East US Azure region. This is because the primary read-only SQL connection string contains the endpoint for the East US region, which is the same as the primary write region. The secondary read-only SQL connection string contains the endpoint for the West US region, which is the additional read region. Therefore, if an application running in the East US Azure region uses these connection strings, it will connect to different regions depending on which one it chooses.
Applications can choose from which region by setting the PreferredLocations property within their connection properties = Yes Applications can choose from which region by setting the PreferredLocations property within their connection properties. This property allows you to specify a list of regions that you prefer to read from based on their proximity to your application2. Azure Cosmos DB will route the requests to the appropriate region based on the availability and latency1. You can also set the ApplicationRegion property to the region where your application is deployed, and Azure Cosmos DB will automatically populate the PreferredLocations property based on the geo-proximity from that location1.
あなたは、NoSQL APIを使用するAzure Cosmos DBアカウントを作成する予定です。
アカウントに保存されるアイテムのグループ化戦略を作成する必要があります。このソリューションでは、アイテムに対する書き込み操作と読み取り操作が同一のトランザクション内で実行できることを保証しなければなりません。
アイテムをグループ化するには何を使えば良いでしょうか？
- A. 物理的な仕切り
- B. 論理パーティション
- C. 容器
- D. データベース
Correct Answer: B 🗳️
お客様は、DB1という名前のAzure Cosmos DB for NoSQLデータベースを含むAzureサブスクリプションを所有しています。
あなたは、DB1を使用するApp1という名前のSaaS(Software as a Service)アプリケーションを開発します。App1は、複数のベンダーが顧客管理に利用します。
DB1に、各ベンダーの顧客情報と注文情報を格納するコンテナを作成する必要があります。このソリューションは、以下の要件を満たす必要があります。
* 各ベンダーは固有のテナントIDを持つ必要があります。
* コンテナのパフォーマンスは読み取りに最適化されている必要があります。
* 顧客IDはコンテナ内で重複しても構いませんが、各ベンダーごとに一意である必要があります。
* コンテナは、複数の顧客からの同時クエリに対応できるよう最適化されている必要があります。各クエリは、単一のベンダーのデータを返します。
コンテナはどのように設定すればよいですか？
- A. (テナント識別子、顧客識別子)に階層型パーティションキーを追加します。
- B. テナントIDにパーティションキーを追加し、顧客IDに一意のキーポリシーを追加します。
- C. 顧客IDにパーティションキーを追加し、テナントIDに一意のキーポリシーを追加します。
- D. (顧客識別子、テナント識別子) に階層パーティションキーを追加します。
Correct Answer: A 🗳️
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