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A Microsoft credential still carries real weight in 2026 hiring decisions, and the 070-357 exam is the gatekeeper. Behind 2Pass4sure's Microsoft Developing Mobile Apps package stands an expert team that verifies each of the 55 practice questions against what the exam currently tests.
Microsoft 070-357 Exam Overview:
| Certification Vendor: | Microsoft |
|---|---|
| Exam Name: | Developing Mobile Apps |
| Exam Number: | 70-357 |
| Exam Format: | Performance-based items, Drag-and-drop, Case studies, Multiple-choice |
| Related Certifications: | MCSA: Universal Windows Platform MCSD: App Builder |
| 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) |
| Available Languages: | Russian, French, Japanese, English, Chinese (Traditional), German, Chinese (Simplified), Portuguese (Brazil), Spanish |
| Real Exam Qty: | 40-60 |
| Exam Duration: | 150 minutes |
| 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 data access and data binding | 20-25% | - Apply MVVM pattern and data binding - Access data using Entity Framework - Access cloud and local file system data - Consume REST services and JSON data |
| Manage authentication and identity management | 10-15% | - Manage tokens and secure storage - Implement authorization and role-based access - Implement Microsoft Account and Azure AD authentication |
| Manage user input and custom user interactions | 10-15% | - Implement gestures and custom interactions - Support touch, mouse, keyboard, and pen input - Integrate share contracts and app extensions |
| Implement feature detection for adaptive coding | 10-15% | - Implement adaptive code paths - Detect device capabilities and features - Handle different form factors and resolutions |
| Develop a XAML page layout for an adaptive UI | 10-15% | - Select appropriate XAML layout panels - Configure grid, alignment, margins, and padding - Implement responsive and adaptive UI with VisualStateManager and AdaptiveTriggers - Create and use custom controls |
| Implement notifications, background tasks, and reusable components | 15-20% | - Implement toast, tile, and badge notifications - Implement app services and inter-app communication - Build reusable libraries and components - Create and schedule background tasks |
| Implement page navigation and lifecycle events | 10-15% | - Implement navigation using Frame and navigation helpers - Manage app suspension, resuming, and activation - Choose navigation patterns (Hub, Master/Details, Tabs, Nav Pane) - Implement command bars, menus, and dialogs |
Answers to the Most Common Questions About Microsoft Developing Mobile Apps
The 070-357 exam is the official Microsoft exam for Microsoft Developing Mobile Apps. Passing it earns you the MCSA: Universal Windows Platform, MCSD: App Builder credential, which sits at the Professional level. It is also connected to MCSA: Universal Windows Platform, MCSD: App Builder, so what you learn carries over if you plan to pursue those paths as well. Employers treat the certification as verified proof of skill, which is why structured preparation with 2Pass4sure's practice questions pays off.
The 070-357 exam contains 40-60 questions, and the time limit is 150 minutes. Translate that into a pacing plan before exam day: know roughly how long you can afford per item, flag anything that stalls you, and circle back at the end instead of burning minutes. Two or three full timed sessions in 2Pass4sure's test engine will teach you that rhythm far better than untimed reading ever will.
The passing score for the 070-357 exam is 700 out of 1000, and the official registration fee is $165 USD (varies by region). Remember that a failed attempt means paying that fee again in full for a retake, so treat self-assessment as part of the budget: run 2Pass4sure's practice questions under timed conditions and only book your seat once your scores sit comfortably above the passing bar.
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 details can change, so before you register, confirm the current requirements on the official exam page: https://learn.microsoft.com/en-us/credentials/certifications/exams/70-357/.
You can book the 070-357 exam through the official registration channels below:
Exam delivery method: Proctored at authorized test centers or online proctoring; retired since Jan 31, 2021.
Microsoft points candidates to the following official training options:
Once the coursework has built your foundation, the fastest way to turn theory into exam readiness is drilling with 2Pass4sure's 55 practice questions for the Microsoft Developing Mobile Apps exam.
Yes. 2Pass4sure offers a free PDF demo of the Microsoft Developing Mobile Apps practice questions on the samples page, so you can judge the format and quality yourself before paying anything. Every purchase also includes 365 days of free updates, and after the product expires you can extend the update service at a 50% discount from within your member zone.
If you take the corresponding exam within 60 days of purchase and do not pass, 2Pass4sure backs you with a 100% money-back guarantee. To claim it, submit a scanned copy of your exam enrollment slip together with your official Score Report PDF within 2 days of the exam, and the refund is processed within 7 days. The guarantee does not apply to attempts made within the first 3 days after purchase, to products downloaded without actually sitting the exam, or to free materials and expired orders, and the candidate name must match the payer's name. If you would rather have study material than money, you can instead exchange for two additional exam products of equal value, free of charge, while keeping the update service on your original purchase. Delivery itself is instant: your download is available right after payment and a copy reaches your mailbox within one minute — if nothing arrives within 2 hours, contact customer service. You may install the product on as many computers as you need.
The official Microsoft Developing Mobile Apps blueprint is organized into 7 domains. The leading areas are:
- Implement notifications, background tasks, and reusable components — 15-20% of the exam
- Implement feature detection for adaptive coding — 10-15% of the exam
- Manage user input and custom user interactions — 10-15% of the exam
For the complete domain-by-domain breakdown with every subtopic, see the Exam Topics outline above.
Microsoft Developing Mobile Apps Sample Questions:
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.

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_
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.

Hotspot Question
You must evaluate the code in CredentialManager.cs. For each of the following statements, select Yes if the statement is true. Otherwise, select No. NOTE: Each correct selection is worth one point.

You have two Universal Window Platform (UWP) apps named Catalog and Research, respectively.
You need to create a service in the Catalog app that can be queried by the Research app.
Which three tasks should you perform? Each correct answer presents part of the solution.
- A. Add a Windows Runtime component to the Research app.
- B. Add an app service extension to package.appmanifest file in the Research app
- C. Add a Windows Runtime component to the Catalog app.
- D. Add an app service extension to package.appmanifest file the the Catalog app.
- E. Enter the package family name of the Catalog app in the Research app.
- F. Enter the package family name of the Catalog app In the Catalog app.
Drag and Drop Question
You are developing a Universal Windows Platform (UWP) app. The app runs on muJriplcdevice faming including desktop, Windows Phone, and Xbox.
The app must be able to access a users media playlists if the device supports this feature, If the device does not support this feature, the app must continue to function.
You need to detect whether a device supports accessing user playlists.
How should you complete the relevant code? To answer, drag the approprate 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 not at all. You may need to drag the split bar between panes or scroll to view content.

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