Correct Answer : macOS
Explanation : While Xamarin does provide support for developing macOS desktop applications, it is not a supported mobile operating system for Xamarin development. Xamarin provides support for developing mobile applications for iOS, Android, and Windows Phone.
Correct Answer : Xamarin.forms
Explanation : Xamarin.forms are used in a situation where Less platform-specific code is required.
Correct Answer : Xamarin.Essentials
Explaination : Xamarin.Essentials assist developers in creating a single cross-platform API for their mobile applications, which can be accessed via common code.
Correct Answer : 6
Explanation : There are 6 types of pages available in Xamarin Forms: Carousel Page, Content Page, MasterDetail Page, Navigation Page, Tabbed Page, and Template Page.