Microsoft 70-521 Exam Information and Actual Questions

  • Exam Code/Number: 70-521
  • Exam Name/Title: Upgrade: Transition Your MCPD Windows Developer 3.5, or Enterprise Application Developer 3.5, Skills to MCPD Windows Developer 4
  • Certification Provider: Microsoft
  • Corresponding Certification: UPGRADE
  • Exam Questions: 115
  • Updated On: Jul 24, 2026

70-521
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Microsoft
70-521 Exam
Upgrade: Transition Your MCPD Windows Developer 3.5, or Enterprise Application Developer 3.5, Skills to MCPD Windows Developer 4

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Microsoft 70-521 Exam Overview:

Certification Vendor:Microsoft
Exam Name:Upgrade: Transition Your MCPD Windows Developer 3.5, or Enterprise Application Developer 3.5 Skills to MCPD Windows Developer 4
Exam Number:70-521
Certificate Validity Period:Retired (no longer active certification exam)
Exam Format:Multiple choice, Case studies, Scenario-based questions
Real Exam Qty:40-60
Exam Duration:120-150
Exam Price:USD 165 (varies by region)
Passing Score:700 (on 1000 scale)
Related Certifications:MCPD Windows Developer 3.5
MCPD Enterprise Application Developer 3.5
MCPD Windows Developer 4
Available Languages:English
Sample Questions:Microsoft 70-521 Sample Questions
Exam Way:Computer-based exam at authorized testing centers (Prometric/Vue historically)
Pre Condition:MCPD Windows Developer 3.5 or MCPD Enterprise Application Developer 3.5 certification recommended/required (historical Microsoft certification path)

Microsoft 70-521 Exam Syllabus Topics:

SectionObjectives
Topic 1: Application Deployment and Configuration- Deployment strategies
  • 1. ClickOnce deployment
    • 2. MSI-based deployment concepts
      - Application configuration
      • 1. .config files and settings management
        • 2. Versioning and updates
          Topic 2: Windows Client Application Development- Windows Forms development in .NET Framework 4
          • 1. UI controls and events
            • 2. Custom controls and components
              • 3. Data binding in Windows Forms
                - Windows Presentation Foundation (WPF)
                • 1. Resources, styles, and templates
                  • 2. Data binding and MVVM patterns
                    • 3. XAML fundamentals and layout system
                      Topic 3: Data Access and Integration- ADO.NET and data connectivity
                      • 1. DataSets and DataReaders
                        • 2. Connected and disconnected data models
                          - Language Integrated Query (LINQ)
                          • 1. LINQ to Objects
                            • 2. LINQ to DataSet and LINQ to SQL concepts
                              Topic 4: Security and Application Architecture- Application design principles
                              • 1. Separation of concerns
                                • 2. Layered architecture
                                  - Application security
                                  • 1. Authentication and authorization concepts
                                    • 2. Code access security fundamentals


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