Exam Name: Developing Mobile Apps
Certification Provider: Microsoft
Corresponding Certification: MCSA-Universal Windows Platform
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- Total Questions: 55
- Updated on: Oct 13, 2026
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- Total Questions: 55
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Microsoft 070-357 Exam Overview:
| Certification Vendor: | Microsoft |
|---|---|
| Exam Name: | Developing Mobile Apps |
| Exam Number: | 70-357 |
| Exam Format: | Multiple response, Multiple choice, Drag and drop, Case studies |
| Passing Score: | 700 (on a 1000 scale) |
| Related Certifications: | MCSA: Web Applications |
| Real Exam Qty: | Approximately 40–60 |
| Exam Duration: | 150 minutes |
| Certificate Validity Period: | Retired (no longer available; certification was historically valid for 2 years) |
| Available Languages: | Korean, English, Spanish, French, Chinese (Simplified), Japanese, German |
| Exam Price: | USD 165 (historical, varies by region and date) |
| Recommended Training: | UWP and Windows App Development learning paths Microsoft Learn (Legacy exam training resources) |
| Exam Registration: | Pearson VUE Microsoft Exams Microsoft Certification Dashboard |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Online proctored or authorized test center (historically via Pearson VUE) |
| Pre Condition: | No strict prerequisites; intended for developers with experience in HTML5, JavaScript, and mobile application development concepts. |
| Official Syllabus URL: | https://learn.microsoft.com/en-us/credentials/certifications/exams/70-357/ |
Microsoft 070-357 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Data storage and management | - Work with remote data sources - Use local storage mechanisms |
| Debugging, testing, and performance optimization | - Optimize performance and responsiveness - Debug application issues - Implement testing strategies |
| Design and develop mobile apps | - Plan application architecture - Design application UI/UX for mobile devices - Select appropriate app models and frameworks |
| Deployment and security | - Package and deploy mobile applications - Ensure application security best practices - Implement authentication and authorization |
| Implement application functionality | - Implement navigation and app lifecycle management - Integrate APIs and services - Develop client-side logic |
Microsoft Developing Mobile Apps Exam: FAQ for Serious Candidates
Lead1Pass issues a full refund if you take the Microsoft Developing Mobile Apps exam within 60 days of purchase and do not pass. The policy does not apply if the exam is taken within 3 days of purchase, if the exam was never actually taken, or to free materials or expired orders, and the candidate name must match the payer name. Submit a scan of your enrollment slip and the official Score Report PDF within 2 days of the exam; claims are processed within 7 days. Alternatively, exchange for two free exam products of equal value and keep your original update service. Orders arrive by email within 1 minute — contact support if nothing arrives within 2 hours.
The official Microsoft Developing Mobile Apps outline defines 5 domains. The leading three are Implement application functionality, Debugging, testing, and performance optimization, and Design and develop mobile apps. The full list is in the topics section above, and Lead1Pass's 55 practice questions cover each one.
Three versions of the same study materials, offering three learning modes: a printable, expert-prepared PDF with free demo download and instant access; a Desktop Test Engine for Windows with customizable simulation and timed modes that works offline; and an Online Test Engine for any browser on Windows, Mac, Android, and iOS with test history and performance review. All 55 practice questions are identical across versions. Every purchase includes 365 days of free updates, a 50% renewal discount afterward, and unlimited computer installations.
No strict prerequisites; intended for developers with experience in HTML5, JavaScript, and mobile application development concepts. Since requirements change over time, confirm the latest on the official Microsoft exam page before scheduling.
The 070-357 exam is a Microsoft certification exam validating the Microsoft Developing Mobile Apps syllabus shown above. It belongs to these credential paths: MCSA: Web Applications. Candidates in 2026 prepare for it with Lead1Pass's 55 practice questions, available as a printable PDF, a Windows Desktop Test Engine, and an Online Test Engine — three versions of the same materials.
Online proctored or authorized test center (historically via Pearson VUE) Register for the Microsoft Developing Mobile Apps exam through these official channels:
After booking, Lead1Pass delivers your practice questions within 1 minute — preparation starts the same day.
Microsoft recommends these training resources for the Microsoft Developing Mobile Apps exam:
Follow the training with steady self-testing — the 55 practice questions from Lead1Pass help you apply theory and fill any gaps the training leaves.
The Microsoft Developing Mobile Apps exam contains Approximately 40–60 to complete within 150 minutes. Timed simulation in the Lead1Pass Desktop Test Engine teaches that rhythm before exam day does.
The Microsoft Developing Mobile Apps exam requires 700 (on a 1000 scale) to pass, and registration costs USD 165 (historical, varies by region and date). A failed attempt means paying the same fee again — a readiness check with the Lead1Pass engines before booking is the cheaper option.
Microsoft Developing Mobile Apps Sample Questions:
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. Call the Authenticate Async method.
- B. Construct a HTTPS request URI.
- C. Call the GetCurrcntApplicotionCallbackUri method.
- D. Construct a HTTP request URI.
Correct Answer: A,C 🗳️
Drag and Drop Question
You need to download the bank statements and alert the user when the download is complete.
Which three actions should you perform in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.
Correct Answer:
You are developing a Universal Windows Platform (UWP) app.
The app must be available on Windows Phone, Windows tablet devices, and Xbox.
When the app is running on a device, you need to determine which members of a specific class you can use.
Which of the following methods should you use?
- A. Storyboard.GetTargetName
- B. Selector.GetlsSelectionActive
- C. Apilnformation.lsPropertyPresent
- D. Userlnformation.NameAccessAllowed
Correct Answer: A 🗳️
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 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.
- B. Create an attached property of type !Command, Bind the UI element's event to the attached property.
- C. Create a new base class for the UI element. Update the base class to call the method within 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: C 🗳️
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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