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Microsoft 70-357 : Developing Mobile Apps
- Exam Code: 70-357
- Exam Name: Developing Mobile Apps
- Updated: Oct 22, 2026 Q&As: 55 Questions and Answers
About Microsoft 70-357 Exam
A Microsoft certification on a resume changes how recruiters read everything below it. The Microsoft Developing Mobile Apps earns that line, and DumpsTests prepares you with 70-357 practice questions aligned to the official 2026 exam.
Microsoft 70-357 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Authentication & Security | - Manage authentication and identity management |
| Topic 2: Data Management | - Access cloud data and Web APIs - Implement data access and data binding |
| Topic 3: Develop User Interfaces | - Develop a XAML page layout for an adaptive UI - Implement responsive and adaptive UI behaviors |
| Topic 4: User Interaction & Controls | - Manage user input and custom interactions - Create and use custom controls |
| Topic 5: Navigation & Lifecycle | - Implement page navigation and lifecycle events - Evaluate custom navigation patterns |
| Topic 6: Feature Detection & Components | - Implement notifications, background tasks, and reusable components - Implement feature detection for adaptive coding |
70-357 Exam FAQs — Read Before You Register
Candidates should have experience in mobile app development with C#, XAML, MVVM, Entity Framework, and Visual Studio. No formal prerequisites beyond experience. Eligibility details like these are worth double-checking before you register — vendors revise them periodically, and the official exam page (official 70-357 exam page) always has the current version.
The official Microsoft Developing Mobile Apps outline has 6 domains — the biggest include Feature Detection & Components, User Interaction & Controls, Navigation & Lifecycle. Those weightings are your study compass: the largest domains hide the most points. See the full outline above for every subtopic.
You can, and you should. The free PDF demo is there so you can judge the content yourself before spending anything. If you're unsure whether the PDF, desktop engine, or online version suits your study habits, contact our 24/7 service team — they'll advise you. After purchase, 365 days of free updates are included, renewable at 50% off if the period ever expires.
Delivery first: the moment you pay, we send the download link and access details to your email within a minute — even on holidays — and the files install on unlimited computers; contact support if 2 hours pass with nothing. For refunds, the terms are explicit: take the corresponding 70-357 exam within 60 days of purchase, and if you fail, submit a scanned enrollment slip plus the official Score Report PDF within 2 days of the exam for a full refund, processed within 7 days. Excluded: exams taken within 3 days of purchase, name mismatches between candidate and payer, and free or expired products. The alternative to a refund: two equal-value exam products free, with your original updates intact.
The pass mark is 700/1000, and the official fee is USD 165 (approx.). That fee resets to full price on every retake, so the real money-saver is preparation — run the 55 practice questions from DumpsTests until passing becomes routine, then book your seat.
The Microsoft Developing Mobile Apps is Microsoft's official exam for the MCSA-Universal Windows Platform certification, a Professional-level credential. Candidates take it to validate real skill — and employers read it exactly that way. It also connects to related credentials such as Microsoft Certified Solutions Developer (MCSD): App Builder.
The exam gives you 150 minutes for 45-60 questions. The candidates who struggle aren't usually short on knowledge — they're short on pacing. Fix that before test day: set a time budget per question, practice moving past hard items without stalling, and rehearse full timed sessions in the DumpsTests engine until the clock stops being a factor.
Microsoft Developing Mobile Apps Sample Questions:
Question #1
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 #2
You are a developer for LitWare, Inc. Universal Windows Platform (UWP) app.
Access to the hardware within the app is not functioning correctly.
You need to add the capabilities to the package.appmanifest file.
Which markup segment should you insert at line PM16?
- A.
- B.
- C.
- D.
Correct Answer: B 🗳️
Question #3
You are a developing a Universal Windows Platform (UWP) app.
You need to provide a solution that moves the scroll bars of the ScrollViewer when a user rotates the mouse wheel.
Which two actions should you perform? Each correct answer presents part of the solution.
- A. Evaluate the CurrentPoint.Properties.lsHorizontalMouseWheel property of the PointerEventArgs object. Call the ChangeView() method of the ScrollViewer.
- B. Add an event handler to the PointerWheelChanged event for the current window.
- C. Add an event handler to the PointerRoutedAway event for the current window.
- D. Evaluate the CurrentPoint.Properties.MouseWhcclDelta property of the PointerEventArgs object.
Call the Change View() method of the ScrollViewer. - E. Update the XAML of the ScrollViewer to include the PointerWheelChanged event with a new event handler. Evaluate the Pointer.lslnRange property of the PointerRoutedEventArgs object within the event handler. Call the ChnageView() method of the ScrollViewer.
Correct Answer: C,E 🗳️
Question #4
Drag and Drop Question
You are building a Universal Windows Platform (UWP) app that displays a list of books.
The books will the displayed in a ListView control.
You are binding to a collection of type BookDataGroup.
You need to create a DataTemplate for your ListView that displays the book' s title and author.
The title must be displayed beforethe author.
Which four markup segments should you use to develop the solution? To answer, move the appropriate markup segments from thelist of markup segments to the answer area and arrange them in the correct order.
Correct Answer:
Question #5
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:
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