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Last Updated: Sep 18, 2026
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No more plunging into piles of materials. The Microsoft Developing Mobile Apps practice set from Exam4Docs is scientifically compiled and perfectly arranged — 55 practice questions, one complete source.
Microsoft 070-357 Exam Overview:
| Certification Vendor: | Microsoft |
|---|---|
| Exam Name: | Developing Mobile Apps |
| Exam Number: | 70-357 |
| Available Languages: | Spanish, German, French, Portuguese (Brazil), Japanese, Chinese (Traditional), Chinese (Simplified), English, Russian |
| Certificate Validity Period: | Retired as of January 31, 2021; certifications earned remain valid until expiration |
| Exam Price: | $165 USD (varies by region) |
| Real Exam Qty: | 40-60 |
| Passing Score: | 700 out of 1000 |
| Related Certifications: | MCSA: Universal Windows Platform MCSD: App Builder |
| Exam Duration: | 150 minutes |
| Exam Format: | Multiple-choice, Case studies, Performance-based items, Drag-and-drop |
| Recommended Training: | Microsoft Official Learning |
| Exam Registration: | Microsoft Exam Page |
| Sample Questions: | DOWNLOAD DEMO |
| 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 feature detection for adaptive coding | 10-15% | - Detect device capabilities and features - Handle different form factors and resolutions - Implement adaptive code paths |
| Manage user input and custom user interactions | 10-15% | - Integrate share contracts and app extensions - Implement gestures and custom interactions - Support touch, mouse, keyboard, and pen input |
| Manage authentication and identity management | 10-15% | - Implement authorization and role-based access - Implement Microsoft Account and Azure AD authentication - Manage tokens and secure storage |
| Develop a XAML page layout for an adaptive UI | 10-15% | - Create and use custom controls - Implement responsive and adaptive UI with VisualStateManager and AdaptiveTriggers - Select appropriate XAML layout panels - Configure grid, alignment, margins, and padding |
| 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 - Implement toast, tile, and badge notifications - Build reusable libraries and components - Create and schedule background tasks |
| 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 |
Before You Book the Microsoft 070-357 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 Vendor eligibility rules do evolve, so double-check on the official page (official 070-357 exam page) before you pay the fee.
Yes:
Official courses and our practice set complement each other: learn the theory there, then pressure-test it with the 55 practice questions for the Microsoft Developing Mobile Apps.
Files first: as an online product, the Microsoft Developing Mobile Apps material is obtainable immediately after ordering — an automatic email lands in your mailbox within a minute, with unlimited installations and 24/7 help if nothing shows up within 2 hours. Failure is covered too: take the corresponding 070-357 exam within 60 days of purchase, and if you don't pass, 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. Exclusions apply — exams within 3 days of purchase, candidate names that don't match the payer, and free or expired products. A free exchange for two equal-value products is the alternative.
Plan on $165 USD (varies by region) per attempt and 700 out of 1000 as the pass mark. Since every retake bills again, rehearse with the 55 practice questions from Exam4Docs first — accurate preparation is cheaper than a second registration.
The Microsoft Developing Mobile Apps blueprint covers 7 domains — including Manage user input and custom user interactions (10-15%), Manage authentication and identity management (10-15%), Implement page navigation and lifecycle events (10-15%). Treat the weightings as your study budget: heavy domains get heavy hours. The complete outline above lists every subtopic.
150 minutes, 40-60 questions. Build pace by practicing in short bursts on the Exam4Docs APP, then graduate to full timed simulations in the software engine before test day.
Yes — although online products can't be touched, we offer free demos before you really choose. Download the Microsoft Developing Mobile Apps trial, judge the question quality yourself, and remember every purchase includes 365 days of free updates (renewable at half price after that).
The Microsoft Developing Mobile Apps is Microsoft's exam for the MCSA: Universal Windows Platform, MCSD: App Builder certification, at the Professional level — formal proof of professional ability that employers can verify. Related credentials include MCSA: Universal Windows Platform, MCSD: App Builder.
Use 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, so select the option that fits you when booking.
Microsoft Developing Mobile Apps Sample Questions:
Hotspot Question
You need to insert code at line CP15 to retrieve the account balance for a user.
How should you complete the relevant code? To answer, select the appropriate code segment from each list in the answer area.
Correct Answer:
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:
You must create a project for shared code.
Solution: You implement the shared code in a Windows Runtime component.
Does this meet the goal?
- A. No
- B. Yes
Correct Answer: B 🗳️
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 StorageFile. OpenSequentialReadAsync method to replace the existing file.
Does this meet the goal?
- A. No
- B. yes
Correct Answer: A 🗳️
Hotspot Question
You need to implement the following code segment according to the requirements.
How should you complete the code? To answer, select the appropriate code segment form each list in the answer area.
Correct Answer:
Topic 3, Fabrikaminc
Background
Fabrikam is a commercial bank. The primary customers are individuals and employers with up to
10,000 employees. Fabrikam provides Internet banking services to customers. You are developing a Universal Windows Platform (UWP) app for Fabrikam that extends the Internet banking to a UWP app.
Business Requirements
Core functionality
Users must be able to access accounts, view balances, view recent transactions, and deposit checks by using the UWP app.
Usability
The app must us industry proven design patterns across the app. All navigational elements must be visible at all times.
Security
The app must provide secure transactions to protect customer privacy.
Technical Requirements
Data
The app must use a file based database. You must use a code first entity framework approach.
User interface
You must use a Model-View-ViewModel (MVVM) pattern.
Users must be able to access all content through the top-level navigation after they sign in.
The app must allow the user to upload up to 50 images (front and back) of checks to deposit.
During the upload process, the app must be responsive to any other user actions.
The app must only upload images when no other pending inputs are in the queue.
You must implement the following pages:
Network and web service
The app must meet the following requirements related to networking and web services:
- Connect to a web service over a secure HTIP connection to upload
images.
- Connect to Fabrikam's core web service to retrieve account
information.
- Use networking technology already available in the .Net Framework.
- Consume the JSON that the Fabrikam core web service provides.
User data and alerts
The app must meet the following requirements related to user data and alerts:
- Download new monthly bank statements when possible.
- The download process must not affect the performance of the app.
Network and web service
The app must meet the following requirements related to networking and web services:
- Connect to a web service over a secure HTIP connection to upload
images.
- Connect to Fabrikame's core web service to retrieve account
information.
- Use networking technology already available in the .Net Framework.
- Consume the JSON that the Fabrikam core web service provides.
User data and alerts
The app must meet the following requirements related to user data and alerts:
- Download new monthly bank statements when possible. The download
process must not affect the performance of the app.
- Report to the user when the statements are downloaded to the device .
- Write a log entry when statements downloads are not successful.
- Periodically check for user activity and automatically log the user
out when there is no activity for more than 15 minutes.
Security:
The app must meet the following requirements related to security:
- Use a multi-factor authentication (MFA) by using email and a
verification code to identify the user.
- Security store credentials and retrieve credentials. Automatically
sign in the user irrespective of the device that is used to sign in to
the app.
- Store the resource name within the app itself.
- Connect to an authentication app by using the URI schema fabrikam-
secutity://oauth.AccountContext.cs
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 prefix that denotes the specific file to which they belong.
lmageMeanger.cs
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 prefix that denotes the specific file to which they belong.
ClientProxy.cs
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 prefix that denotes the specific file to which they belong.
BkgTaskMgr.cs
CredentialManagers.cs
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 prefix that denotes the specific file to which they belong.
Main Page.cs
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 prefix that denotes the specific file to which they belong_
Poppy
Tammy
Abraham
Bard
Burke
Dennis
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