Which of the follow statements is TRUE of the use of categories?

Best describes the differences between iOS 7 and iOS 6?

NSXMLParser is which kind of parser ?

An object with at least one owner can be destroyed.

This code doesn't do much, but which line will call the + (void)initialize method on the class SomeClass 1. - (void)doSomething 2. { 3. [SomeClass someClassMethod]; 4. SomeClass *obj = [[SomeClass alloc] init]; 5. NSString *descriptionString = [obj getNewString]; 6. }

The app is in the background but not executing code. What State App is it in?

In the AVFoundation framework, which classes has been deprecated in iOS 10?

Which is a new class in the AVFoundation framework, which is used to provide a modern interface for capture workflows related to still photography?

Which is a new key for the info.plist file introduced in iOS 10?

Which Trigger class objects indicates that a notif‌ication was sent by the Apple Push Notification Service?

Which SiriKit components is a type of protocol?