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Microsoft 070-357 exam dumps : Developing Mobile Apps
- Exam Code: 070-357
- Exam Name: Developing Mobile Apps
- Updated: Oct 28, 2026 Q & A: 55 Questions and Answers
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About Microsoft 070-357 Exam
Don't let the exam become your stumbling block. The Microsoft Developing Mobile Apps test engine at PracticeTorrent — a leader in this line: 55 practice questions for the 070-357 exam.
Microsoft 070-357 Exam Overview:
| Certification Vendor: | Microsoft |
|---|---|
| Exam Name: | Developing Mobile Apps |
| Exam Number: | 70-357 |
| Related Certifications: | MCSA: Universal Windows Platform MCSD: App Builder |
| Exam Duration: | 150 minutes |
| Certificate Validity Period: | Retired as of January 31, 2021; certifications earned remain valid until expiration |
| Exam Format: | Case studies, Drag-and-drop, Performance-based items, Multiple-choice |
| Available Languages: | Chinese (Traditional), German, Japanese, Russian, French, Spanish, English, Portuguese (Brazil), Chinese (Simplified) |
| Exam Price: | $165 USD (varies by region) |
| Passing Score: | 700 out of 1000 |
| Real Exam Qty: | 40-60 |
| Recommended Training: | Microsoft Official Learning |
| Exam Registration: | Microsoft Exam Page |
| 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/ |
Microsoft 070-357 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Implement notifications, background tasks, and reusable components | 15-20% | - Implement toast, tile, and badge notifications - Build reusable libraries and components - Create and schedule background tasks - Implement app services and inter-app communication |
| Develop a XAML page layout for an adaptive UI | 10-15% | - Select appropriate XAML layout panels - Create and use custom controls - Implement responsive and adaptive UI with VisualStateManager and AdaptiveTriggers - Configure grid, alignment, margins, and padding |
| 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 |
| 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 |
| Implement data access and data binding | 20-25% | - Access data using Entity Framework - Consume REST services and JSON data - Apply MVVM pattern and data binding - Access cloud and local file system data |
| Implement page navigation and lifecycle events | 10-15% | - Manage app suspension, resuming, and activation - Implement command bars, menus, and dialogs - Choose navigation patterns (Hub, Master/Details, Tabs, Nav Pane) - Implement navigation using Frame and navigation helpers |
| Implement feature detection for adaptive coding | 10-15% | - Detect device capabilities and features - Handle different form factors and resolutions - Implement adaptive code paths |
Microsoft Developing Mobile Apps Exam FAQ — Worry-Free Answers
The Microsoft Developing Mobile Apps is Microsoft's certification exam for MCSA: Universal Windows Platform, MCSD: App Builder, at the Professional level. It's demanding enough to intimidate — timed practice is the cure. Related credentials include MCSA: Universal Windows Platform, MCSD: App Builder.
Yes:
After any course, build confidence with the 55 practice questions for the Microsoft Developing Mobile Apps — every answer expert-verified.
Through the vendor's official registration channels:
The Microsoft Developing Mobile Apps is delivered Proctored at authorized test centers or online proctoring; retired since Jan 31, 2021 — pick the arrangement that suits you when booking.
150 minutes for 40-60 questions. The PracticeTorrent APP engine imitates the real test — set timed exams, mark performance, point out mistakes — so exam day feels rehearsed.
The Microsoft Developing Mobile Apps blueprint spans 7 domains — including Implement page navigation and lifecycle events (10-15%), Develop a XAML page layout for an adaptive UI (10-15%), Manage authentication and identity management (10-15%). The complete outline above lists every subtopic; our IT staff keep the material aligned daily.
Typically 2+ years of experience developing Windows apps with C# and XAML; familiarity with MVVM, Entity Framework, and authentication technologies; Visual Studio 2015+ recommended Eligibility rules change over time, so verify the current requirements on the official page (official 070-357 exam page) before registering.
$165 USD (varies by region) per attempt, 700 out of 1000 to pass. Retakes cost the full fee — practice whenever you want with the 55 practice questions for the 070-357 exam at PracticeTorrent.
Soon after payment you receive the Microsoft Developing Mobile Apps material by automatic email — about a minute, with Credit Card payment and a strict information system keeping money and data safe; our 7*24 service replies within 2 hours, even on official holidays. If you fail the corresponding 070-357 exam within 60 days of purchase, we refund in full: send a scanned enrollment slip plus the official Score Report PDF within 2 days of the exam, processed within 7 days. Excluded: exams within 3 days of purchase, candidate names that don't match the payer, and free or expired products. Or exchange for two equal-value products free.
Yes — download the free Microsoft Developing Mobile Apps demo and feel the engine before paying. Purchases include 365 days of free updates by email; renew afterward at 50% off.
Microsoft Developing Mobile Apps Sample Questions:
Question #1
You are developing a Universal Windows Platform (UWP) app.
Your app stores files on a user's device.
You need to be able to replace the existing files with new files generated by the user.
Solution: You run the StoragaFile.GetParentAsync method to get a reference to the existing file.
Then, you run the StorageFile.CreateStreamedFileAsyne method to create the- new file at that same location.
Does this meet the goal?
- A. yes
- B. No
Correct Answer: A 🗳️
Question #2
Your are developing a Universal Windows Platform (UWP) app that uses XAML and C#.
The app must use the Model-View-ViewModel (MVVM) pattern.
The user interface (UI) triggers an event.
You need to bind the event to a view model method.
What should you do?
- A. Create an attached property of type !Command, Bind the UI element's event to the attached property.
- B. Create a new base class for the UI element. Update the base class to call the method within the view model.
- C. Create a custom behavior and attach the behavior to the UI element. Bind the behavior's event trigger to the command declared in the view model.
- D. Create a new class that implements the IValueConverter interface.
Define the class as a new resource in XAML Use Static Resource Markup Extension to access the view model method.
Correct Answer: B 🗳️
Question #3
Drag and Drop Question
You need to add code at line IM14 to meet the user interface requirement.
How should you complete the relevant code segment? To answer, drag the appropriate code segments to the correct location or locations. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
Correct Answer:
Question #4
You have to connect your app to an online identity provider that uses OAuth authentication protocol.
The app must securely use the Web Authentication Broker object for authentication.
You need to ensure that the app registers with the provider.
Which two actions should you perform? Each correct answer presents part of the solution.
- A. Construct a HTTPS request URI.
- B. Call the Authenticate Async method.
- C. Construct a HTTP request URI.
- D. Call the GetCurrcntApplicotionCallbackUri method.
Correct Answer: B,D 🗳️
Question #5
Hotspot Question
You are reviewing the App_BackRequested method in the MainPage.xaml.cs file.
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Correct Answer:
Viewing page 1 out of 11 pages.
Viewing questions 1-5 out of 55 questions.
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