Test your basic knowledge |

iOS 5 App Development Objective C

Subjects : it-skills, apple
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The root view controller typically creates the next view controller - and the next _ creates the one after that






2. The designated initializer calls the _ designated initializer....

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3. UIImageView is used to...






4. Object Oriented based analogue to a function is called a...






5. Values to be supplied as the parameters to the method






6. Center and frame are used to _ your view






7. Class methods do not operate on an _ or have any access to _ variables....






8. @property - is using methods...






9. NSArray - class...






10. Each object does its own job - and presents to the rest of the world - to other objects - and indeed in a sense to the programmer - an opaque wall whose only entrances are the methods to which it promises to respond and the actions it promises to per






11. Reference Counting...






12. Ready-made instances...






13. A view is a subclass of _






14. The notion that the data for an object is stored in it's instance variables and is accessed only by the objects methods. This maintains the integrity of the data.






15. Asking a class or object to execute a method






16. We can use dot notation to reference...

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17. The object to which a message is sent - the receiver can be referred to as self from inside the method that is invoked






18. Any other initializer a class has calls the _ designated initializer....

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19. Only exists within the statement block there defined - outside of the block is fine






20. To load a Xib file manually - you use _






21. A method in a _ is required unless its preceded by an @optional.






22. C struct with a CGPoint origin and a CGSize size - in other words two c structs.






23. A command directed to an object is called an...






24. A callback is a function that is supplied in advance of an event - and...






25. Files Owner...






26. A pointer to the object being asked to execute a method






27. It's class is sent the message alloc - which creates an instance of that class and returns a pointer to it - and then that instance is sent the message init - which gives its instance variables initial values.






28. Also if you send the NSObject the _ message - you own that object.






29. A UITableViewController can fill all three roles of...






30. Reducing details to focus on the core concepts






31. Any individual object belonging to any class...






32. An instance is a device for maintaining state. It's a box for _ of data.






33. SomeClass* aVariable = [[SomeClass alloc] init]; is an example of what kind of instance?






34. Objective C only allows for single inheritance - so in regards to class you only ever see the following pattern






35. The class is responsible for what instance variables the instance has - but not the _ of those variables.






36. NSString objects are usually sent _ rather than _...






37. When an object is removed from an NSMutableArray - that object is sent the message release;...






38. Inside a method - _ is an implicit local variable. Typically - _ is used so that an object can send a message to itself....






39. After accessors have been defined in the header file...






40. A view exists within a hierarchy. The window (an instance of UIWindow) is a view and the root of the hierarchy. It has _ (that appear on the window). Those views can also have _.






41. Never access a view controller's view in that...

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42. A view represents a _ area






43. Typically the designated initializer has parameters for the most important and frequently used _ of an object






44. If a class declares a _ that is different from its superclass - you must override the superclass' _ to call the new _...






45. Categories are an Objective C way to add _ to an existing class without subclassing






46. NSValue - class...






47. NSNumber - class...






48. NSString* s2 = [s uppercase String]; Is an example of what kind of instance?






49. Whenever a UINavigationController is about to swap views - it sends out two messages






50. UIView - designated initializer...