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| Certification Vendor: | Microsoft |
|---|---|
| Exam Name: | Developing Mobile Apps |
| Exam Number: | 70-357 |
| Exam Format: | Multiple-choice, Drag-and-drop, Case studies, Performance-based items |
| Real Exam Qty: | 40-60 |
| Related Certifications: | MCSA: Universal Windows Platform MCSD: App Builder |
| Available Languages: | German, Russian, English, Chinese (Simplified), Chinese (Traditional), Portuguese (Brazil), Spanish, Japanese, French |
| Exam Duration: | 150 minutes |
| Certificate Validity Period: | Retired as of January 31, 2021; certifications earned remain valid until expiration |
| Passing Score: | 700 out of 1000 |
| Exam Price: | $165 USD (varies by region) |
| Recommended Training: | Microsoft Official Learning |
| Exam Registration: | Microsoft Exam Page |
| Sample Questions: | Microsoft 70-357日本語 Sample Questions |
| Exam Way: | Proctored at authorized test centers or online proctoring; retired since Jan 31, 2021 |
| Pre Condition: | Typically 2+ years of experience developing Windows apps with C# and XAML; familiarity with MVVM, Entity Framework, and authentication technologies; Visual Studio 2015+ recommended |
| Official Syllabus URL: | https://learn.microsoft.com/en-us/credentials/certifications/exams/70-357/ |
| Section | Weight | Objectives |
|---|---|---|
| Manage authentication and identity management | 10-15% | - Implement Microsoft Account and Azure AD authentication - Manage tokens and secure storage - Implement authorization and role-based access |
| Manage user input and custom user interactions | 10-15% | - Support touch, mouse, keyboard, and pen input - Implement gestures and custom interactions - Integrate share contracts and app extensions |
| Develop a XAML page layout for an adaptive UI | 10-15% | - Select appropriate XAML layout panels - Implement responsive and adaptive UI with VisualStateManager and AdaptiveTriggers - Configure grid, alignment, margins, and padding - Create and use custom controls |
| Implement page navigation and lifecycle events | 10-15% | - Implement command bars, menus, and dialogs - Manage app suspension, resuming, and activation - Implement navigation using Frame and navigation helpers - Choose navigation patterns (Hub, Master/Details, Tabs, Nav Pane) |
| Implement notifications, background tasks, and reusable components | 15-20% | - Implement app services and inter-app communication - Create and schedule background tasks - Implement toast, tile, and badge notifications - Build reusable libraries and components |
| Implement data access and data binding | 20-25% | - Access cloud and local file system data - Access data using Entity Framework - Consume REST services and JSON data - Apply MVVM pattern and data binding |
| Implement feature detection for adaptive coding | 10-15% | - Detect device capabilities and features - Handle different form factors and resolutions - Implement adaptive code paths |
The 70-357日本語 exam (Developing Mobile Apps (70-357日本語版)) is the official Microsoft exam that leads to the MCSA: Universal Windows Platform, MCSD: App Builder certification, a credential at the Professional level. Related certifications include MCSA: Universal Windows Platform, MCSD: App Builder. Actual4test provides 55 practice questions to help you prepare for it with confidence.
The 70-357日本語 exam contains 40-60 questions and gives you 150 minutes to finish them. Before exam day, divide the total time by the question count so you know the pace you need to keep, and flag difficult items instead of getting stuck on them. Running at least one full timed session in the Actual4test test engine is the best way to make that time pressure feel familiar.
You need 700 out of 1000 to pass, and the official registration fee is $165 USD (varies by region). Keep in mind that a failed attempt means paying that fee in full again, so it pays to test yourself first. When your scores on the Actual4test timed practice tests stay consistently above the passing line, you are ready to book the exam.
Typically 2+ years of experience developing Windows apps with C# and XAML; familiarity with MVVM, Entity Framework, and authentication technologies; Visual Studio 2015+ recommended Requirements can change over time, so always double-check the latest eligibility rules before you register on the official Microsoft exam page.
You can book your exam through the official registration channels:
The exam is delivered in the following way: Proctored at authorized test centers or online proctoring; retired since Jan 31, 2021.
Microsoft recommends the following training options for this exam:
Official courses build the foundation, and the 55 70-357日本語 practice questions from Actual4test help you turn that knowledge into exam-day performance.
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The 70-357日本語 syllabus is organized into 7 exam domains. Among the first three are Implement notifications, background tasks, and reusable components (15-20%), Manage user input and custom user interactions (10-15%), Implement data access and data binding (20-25%). For the complete breakdown of topics and subtopics, see the Exam Topics section above.
ホットスポットの質問
ユーザーインターフェイスオブジェクトのサイズを適切に処理する必要があります。
メソッドをどのように完了する必要がありますか?回答するには、回答領域の各リストから適切なコードセグメントを選択します。注:それぞれの正しい選択には1ポイントの価値があります。
Correct Answer:

Topic 2, Background
You are developing a Universal Windows Platform (UWP) app for LitWare, Inc. that will assist video artists. The app allows artists to create videos, share videos through other mobile apps, and upload the videos through LitWare, Inc's web services. What helps set LitWarelnc's app apart from competitors is their focus on speed and performance.
Business requirements
Support many devices
Users may have phones, tablets, or laptops. The app must support all devices with a fluid layout that grows off-screen and adapts to each device.
Record video
Users must be able to record videos and view them in their videos library .
The app must display information about the recorded video .
Users must be able to edit the upload queue in the app.
Branding
The app must allow deferral and scheduling of video uploads.
Users must be able to view the status of video uploads.
Any videos created with this app or shared with this app must be uploaded without user interaction.
Download video
The app must have the option to automatically download videos.
Users must be able to initiate downloading of videos.
Share video
The app must allow be allowed to receive videos from other apps.
Technical requirements
Application structure
Technical requirements
Support multiple devices
The app must support the following:
- Use horizontal layout for larger screens .
- Use vertical layout for smaller screens .
- Use one layout control per view.
The app must be compatible with current and future XBOX app that use C++.
Uploading and downloading
The app must use a background operations to upload and download videos.
Code reuse
The app must use a common pool of XAML resources and custom controls.
All custom controls must use a consistent theme throughout the app.
You must create code that can be reused in C++, C#, JavaScript, whenever possible.
The app must call the background service to avoid duplication of code.
Security
End users must be authenticated using OAuth.
Web services must be authenticated.
Users must have the option to use single sign-on.
Recording
The app must use the microphone and webcam to support audio and video recording. In addition, the app must support the use of the back camera buttons, if present.
Integration:
Other apps must be able to share videos with this app through a Universal Windows Platform (UWP) Architecture and coding style The app must follow the Model-View-ViewModel (MVVM) pattern.
The app's user interface (UI) must be optimized for performance.
The app must use compile time coding techniques over runtime.
Package appxmanifest
Relevant portions of the app files are shown below. Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.
Background Task
Relevant portions of the app files are shown below. Line numbers in the code segments are included for reference only and include a two-character prefix that denotes the specific file to which they belong.
ユニバーサルWindowsプラットフォーム(UWP)アプリケーションを開発しています。これにより、ユーザーは写真を撮り、ビデオを録画することができます。 写真や動画は、それぞれユーザーのフォトライブラリとビデオライブラリに保存する必要があります。 アプリは、ファイルを保存するためのユーザーインターフェイスを表示してはいけません。
あなたはアプリを設定する必要があります。
あなたは、アプリで、能力のどのセットが現れると断言しなければなりませんか?
Correct Answer: D 🗳️
タイムラインのナビゲーションを設計する必要があります。
どのようなナビゲーションを使用する必要がありますか?
Correct Answer: A 🗳️
質問のドラッグアンドドロップ
ストレージ要件を満たす必要があります。
どの3つのアクションを順番に実行する必要がありますか?回答するには、回答領域のリストから適切なアクションを移動し、正しい順序に並べます。
Correct Answer:

それぞれカタログとリサーチという2つのユニバーサルウィンドウプラットフォーム(UWP)アプリがあります。
リサーチアプリでクエリできるサービスをカタログアプリで作成する必要があります。
どの3つのタスクを実行する必要がありますか?それぞれの正解は、ソリューションの一部を示しています。
Correct Answer: A,B,D 🗳️
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