Test your knowledge

1. An instance of RecyclerView will create one View instance for which of these?
   • Every item of data
   • Every item of data visible on the screen
   • Each type of data element that is also visible on the screen
2. When attaching an observer to LiveData you need to do which of the following?
   • Detach it when its LifecycleOwner is destroyed
   • Attach it on the main thread
   • Provide a valid LifecycleOwner
3. Overview / Dashboard screens should have which of these features?
   • They should only use graphs to display statistics
   • They should not scroll if it can be avoided
   • They should display an overview with the most important information first
4. The ViewHolder class is used by the RecyclerView to do what?
   • Improve the data binding performance
   • Reference the views that will be garbage collected
   • Store the View objects in a Bundle
5. When using LiveData objects to reference data used by multiple Fragment objects, which of these is true?
   • The Fragment instances must share the same LiveData reference to see changes
   • The LiveData...