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  • Exam Code: DP-420J
  • Exam Name: Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB (DP-420日本語版)
  • Last Updated: Nov 04, 2026
  • Q & A: 206 Questions and Answers
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  • Exam Code: DP-420J
  • Exam Name: Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB (DP-420日本語版)
  • Last Updated: Nov 04, 2026
  • Q & A: 206 Questions and Answers
  • Uses the World Class DP-420日本語 Testing Engine. Free updates for one year. Real DP-420日本語 exam questions with answers. Install on multiple computers for self-paced, at-your-convenience training.
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Exam DP-420: Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB

Candidates for this exam must have solid knowledge and experience developing apps for Azure and working with Azure Cosmos DB database technologies. They should be proficient at developing applications by using the Core (SQL) API and SDKs, writing efficient queries and creating appropriate index policies, provisioning and managing resources in Azure, and creating server-side objects with JavaScript. They should be able to interpret JSON, read C# or Java code, and use PowerShell.

The English language version of this exam will be updated on August 4, 2022. Please download the skills measured document below to see what’s changing. If a localized version of this exam is available, it will be updated approximately eight weeks after this date.

Passing score: 700. Learn more about exam scores.

Part of the requirements for: Microsoft Certified: Azure Cosmos DB Developer Specialty

Download exam skills outline

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Reference: https://docs.microsoft.com/en-us/learn/certifications/exams/dp-420?WT.mc_id=Azure_blog-wwl

Skills measured

  • Optimize an Azure Cosmos DB solution (15–20%)
  • Design and implement data models (35–40%)
  • Design and implement data distribution (5–10%)
  • Integrate an Azure Cosmos DB solution (5–10%)
  • The English language version of this exam will be updated on August 4, 2022. Please download the exam skills outline below to see what’s changing.
  • Maintain an Azure Cosmos DB solution (25–30%)

Microsoft DP-420日本語 Exam Syllabus Topics:

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

Microsoft Designing and Implementing Cloud-Native Applications Using Microsoft Azure Cosmos DB (DP-420日本語版) Sample Questions:

Question #1

注:この問題は、同じシナリオを提示する一連の問題の一部です。このシリーズの各問題には、提示された目標を満たす可能性のある独自の解決策が含まれています。問題セットによっては、複数の正解が存在する場合もあれば、正解が存在しない場合もあります。
このセクションの質問に回答すると、後から戻って回答することはできません。そのため、これらの質問は復習画面には表示されません。
Azure Cosmos DB for NoSQL アカウントに、conlainer1 という名前のコンテナがあります。
Azure Stream Analytics ジョブの参照データとして、コンテナ1の内容を利用できるようにする必要があります。
解決策:Azure Functionsを作成し、データを別のAzure Cosmos DB for NoSQLコンテナーにコピーします。
これは目標を達成していると言えるでしょうか?

  • A. いいえ
  • B. はい
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Question #2

あなたは、App1 という名前のアプリケーションで使用される Azure Cosmos DB Core (SQL) API アカウントを持っています。
アカウントのインサイトペインを開くと、次のグラフが表示されます。

ドロップダウンメニューを使用して、図に示された情報に基づいて各質問に対する回答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。

Reveal Solution  Discussion  0

Correct Answer:


Explanation:

Box 1: incorrect connection URLs
400 Bad Request: Returned when there is an error in the request URI, headers, or body. The response body will contain an error message explaining what the specific problem is.
The HyperText Transfer Protocol (HTTP) 400 Bad Request response status code indicates that the server cannot or will not process the request due to something that is perceived to be a client error (for example, malformed request syntax, invalid request message framing, or deceptive request routing).
Box 2: 6 thousand
201 Created: Success on PUT or POST. Object created or updated successfully.
Note:
200 OK: Success on GET, PUT, or POST. Returned for a successful response.
404 Not Found: Returned when a resource does not exist on the server. If you are managing or querying an index, check the syntax and verify the index name is specified correctly.
Reference: https://docs.microsoft.com/en-us/rest/api/searchservice/http-status-codes

Question #3

account1 という名前の Azure Cosmos DB for NoSQL アカウントがあり、App1 という名前のアプリケーションをサポートしています。App1 は、一貫性プレフィックスの一貫性レベルを使用しています。
アカウント1を、専用ゲートウェイと統合キャッシュを使用するように設定します。
App1が統合キャッシュを使用できることを確認する必要があります。
APP1に対して実行すべき2つのアクションはどれですか?それぞれの正解は、解決策の一部を示しています。
注:正解ごとに1ポイントが加算されます。

  • A. 接続モードを直接に変更します
  • B. アカウントのエンドポイントを https://account1.sqlx.cosmos.azure.com に変更します。
  • C. アカウントのエンドポイントを https://account1.documents.azure.com に変更してください。
  • D. セッションへのリクエストの一貫性レベルを変更します。
  • E. リクエストの一貫性レベルを「強い」に変更します。
Reveal Solution  Discussion  0

Correct Answer: B,D  🗳️

Explanation: Only visible for BraindumpsIT members. You can sign-up / login (it's free).

Question #4

account1に対して複数リージョン書き込みを設定します。
App1がアカウント1の新しい構成をサポートしていることを確認する必要があります。ソリューションは、ビジネス要件と製品カタログの要件を満たさなければなりません。
あなたはどうすべきですか?

  • A. accountl のデフォルトの整合性レベルを制限付き陳腐化に設定します。
  • B. プライベートエンドポイント接続を作成します。
  • C. App1の接続ポリシーを変更します。
  • D. con-product および con-productVendor コンテナに割り当てられるリクエストユニット/秒 (RU/s) の数を増やします。
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Explanation: Only visible for BraindumpsIT members. You can sign-up / login (it's free).

Question #5

account1 という名前の Azure Cosmos DB for NoSQL アカウントを含む Azure サブスクリプションがあります。
account1 のバックアップの構成は次のとおりです。
* 間隔: 2時間
* 保存期間: 4日間
バックアップの保持に関連する料金を見積もる必要があります。バックアップのコピーがいくつあると追加料金が発生しますか?

  • A. 46
  • B. 48
  • C. 12
  • D. 8
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

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