Silverlight Web Technology Quiz

MoonLight is the name of the Linux version of Silverlight. It was an open-source implementation of Silverlight, developed by the Mono project, to enable Silverlight applications to run on Linux systems. SilverLight (A) is the original Microsoft product. SunLight (B) and StarLight (D) are made-up names.

Canvas Panel provides absolute positioning control, Stack Panel arranges elements in a horizontal or vertical stack, and Grid Panel offers row/column-based layout with comprehensive positioning. All three are valid Silverlight/WPF layout management panels. Option D ('None of these') is incorrect because all listed panels are real and commonly used.

Silverlight does NOT support DataTable, DataSet, or DataColumn - these are ADO.NET data structures from the full .NET framework that are not available in Silverlight's subset. Silverlight uses simplified data structures and relies on other mechanisms (like collections, POCO objects, or WCF/REST services) for data handling. Therefore 'None of these' (D) is correct.

The correct MIME type for a Silverlight application package (.xap file) is application/x-silverlight-app. Since this option is not listed among the choices, 'None of these' is the correct answer.

Silverlight was designed as a cross-browser, cross-platform plugin. At its peak, it officially supported all major web browsers, including Internet Explorer, Firefox, Safari, and Chrome on both Windows and macOS.

OnPropertyChanged() is the standard method called when a property value changes in data binding scenarios. This method implements INotifyPropertyChanged and notifies the UI that bound data has changed, triggering UI updates. OnItemChanged and OnFieldChanged are not standard Silverlight/WPF patterns.

IsolatedStorage is the Silverlight API for storing data locally on the user's computer in a secure, sandboxed location. It provides a virtual file system with controlled quota. The other options (StorageManager, ConsoleManager, ConfigurationStorageManager) are not actual Silverlight classes for local storage.

Microsoft Expression Blend is specifically designed for designer-developer collaboration in creating Silverlight user interfaces. It provides visual design tools while working seamlessly with Visual Studio projects. Visual Studio is primarily for developers, Photoshop doesn't integrate directly with Silverlight, and Expression Suite is the broader product family.

To set the default startup page in a Silverlight application, you instantiate the target Page class (e.g., MainPage) and assign the instance to the Application's RootVisual property. The other choices use invalid syntax or refer to the markup filename directly.

In Silverlight and WPF, a Storyboard is a specialized class used to control animations using a timeline, specifying property targeting details for child animations. It is not a generic GUI control, video player, or an AJAX utility.

MVVM (Model-View-ViewModel) is the most appropriate design pattern for Silverlight development. It separates the UI (View) from business logic (Model) using a ViewModel that leverages Silverlight's data binding and command infrastructure. MVC and MVP are less suited to Silverlight's data-binding-centric architecture.

Silverlight applications support multiple service types: traditional ASMX Web Services, WCF (Windows Communication Foundation) Services for advanced SOA scenarios, and WCF RIA Services specifically designed for Silverlight business applications. All three are valid approaches depending on requirements.

Silverlight's key advantage is being cross-platform - it runs on Windows, Mac, and was available for Linux (Moonlight) through a browser plugin, enabling consistent experiences across operating systems. While development is relatively easy and memory usage is reasonable, cross-platform reach is the primary differentiator.