Model View ViewModel (MVVM) Practice Exam

The Certificate in Model View ViewModel (MVVM) is designed to validate candidates' proficiency in understanding and implementing the MVVM architectural pattern in software development. The exam assesses candidates' knowledge of MVVM principles, practical skills in designing and implementing ViewModels, proficiency in data binding and commanding, familiarity with dependency injection, and best practices in MVVM application development.

Skills Required:

• Understanding of MVVM Principles: Candidates should have a solid understanding of the core concepts of MVVM, including separation of concerns, data binding, and the roles of Model, View, and ViewModel.
• Proficiency in Frameworks: Familiarity with frameworks commonly used in MVVM application development, such as Xamarin.Forms, WPF, UWP, or Angular.
• Data Binding and Commands: Ability to implement data binding and commands to facilitate communication between the View and ViewModel layers, enabling dynamic updates and user interactions.
• ViewModel Design and Implementation: Skill in designing and implementing ViewModels to encapsulate application logic and state, including data manipulation, validation, and interaction with the Model layer.
• Dependency Injection: Understanding of dependency injection principles and techniques to promote modularity, testability, and maintainability of MVVM applications.
• Unit Testing: Proficiency in unit testing techniques to test ViewModels independently of the View layer, ensuring the correctness and reliability of the application logic.
• Navigation and State Management: Knowledge of navigation and state management techniques within MVVM applications, allowing for seamless navigation between views and preserving application state.
• Reactive Programming: Familiarity with reactive programming libraries to handle asynchronous data streams and events in a reactive and declarative manner, enhancing the responsiveness and maintainability of MVVM applications.

Who should take the Exam?

The Certificate in MVVM exam is suitable for software developers, software engineers, and architects involved in building cross-platform or desktop applications using the MVVM architectural pattern. It is particularly relevant for professionals working with frameworks like Xamarin, WPF, UWP, or Angular, as well as those aspiring to specialize in MVVM-based application development.

Detailed Course Outline:

The Model View ViewModel (MVVM) Exam covers the following topics

Module 1 - Introduction to MVVM Architecture

• Core concepts and principles
• Roles of Model, View, and ViewModel
• Benefits and advantages of MVVM

Module 2 - Implementing ViewModels

• Design patterns for ViewModels
• ViewModel lifecycle
• Data manipulation and validation

Module 3 - Data Binding and Commands

• Two-way data binding
• Commanding for user interactions
• Event handling and delegation

Module 4- Dependency Injection in MVVM

• Principles of dependency injection
• IoC (Inversion of Control) containers
• Implementing dependency injection in MVVM applications

Module 5 - Unit Testing ViewModels

• Test-driven development (TDD)
• Writing testable ViewModels
• Mocking and stubbing dependencies

Module 6 - Navigation and State Management

• Navigation patterns in MVVM
• Managing application state
• Handling lifecycle events

Module 7 - Reactive Programming in MVVM

• Introduction to reactive programming
• Reactive libraries and frameworks
• Integrating reactive programming with MVVM