IOS

Returns an NSNumber object initialized with an appropriate class constructor depending on the type ✘ Evaluates the boxed expression dynamically and returns the appropriate object literal based on its value ✘ Returns an NSDictionary object ✘ Returns an NSArray object ✔

1024*1024 ✘ 512*512 ✘ 512*1024 ✘ 1000*1000 ✔

Determining the class of an object at runtime ✘ Determining the method to invoke at runtime ✘ Adding new modules to a program at runtime ✘ All of these ✔

Determining the class of an object at runtime ✘ Determining the method to invoke at runtime ✘ Adding new modules to a program at runtime ✘ All of these ✔

Application Kit ✘ Foundation Kit ✘ Cocoa Kit ✘ All of these ✔

Application Kit ✘ Foundation Kit ✘ Cocoa Kit ✘ All of these ✔

It is a compiler feature that provides automatic memory management of Objective-C objects. ✘ It is used as an interface builder to create connections from user interface objects to your application objects. ✘ It provides a small set of basic utility classes. ✘ It provides a level of OS independence, to enhance portability. ✔

Weak ✘ Strong ✘ Assign ✘ Retain ✔

Weak ✘ Strong ✘ Assign ✘ Retain ✔

Team ID ✘ BundleID ✘ ID ✘ Team ID and BundleID ✔