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. NSNumber - class...






2. UIImageView is used to...






3. In general - in Objective-C - a reference to an instance is a _ - and the name of the data type of what's at the far end of that pointer is the name of the instances's _.






4. Dynamic binding means that when we call a certain object's method - and there are several _ of that method - the right one is figured out at runtime.






5. A class inherits all _ from its superclass and can add as many as it wants for its own purposes....






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






7. A _ handles touch events.






8. If you aren't going to initialize an instance reference pointer at the moment you declare it by assigning a real value - it's a good idea to assign it _.






9. @property - is using methods...






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






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






12. [Instance Variables] The code it gets from its class and in a sense is shared with all other instances of that class - but the _ belong to it alone.






13. A collection object - an ordered list of objects that can be accesed by an index






14. Core foundation classes are prefixed with _ and suffixed with _






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






16. 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.






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






18. A view is an...






19. class methods...






20. When making a tableView always...






21. In object oriented languages - we call methods that get and set instance variables accessors - individually we call them...

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






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






24. When an NSMutableArray is deallocated - it sends...






25. Order of the declarations for methods. _ come first - followed by _ - followed by any other methods...






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






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






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






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






30. UIView - designated initializer...






31. Asking a class or object to execute a method






32. Each class picks one _ as it's designated initializer....






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






34. Reference Counting...






35. initWithFrame: the designated initializer for UIView gives the view






36. Keep view and model objects in sync - control the 'flow' of the application - and save the model objects out to the filesystem






37. What does autorelease mean?






38. Ready-made instances...






39. When a view controller presents a modal view controller - the _ of the modal view controller is set to be the parent of the presenting controller






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






41. NSArray - class...






42. In the last line of an init method...






43. Delegation is an object oriented approach to






44. Designated initializer makes sure that every...






45. The integer prefix is...






46. Name of the method to be executed






47. NSArray - important methods...






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






49. You use _ to implement the view






50. Why properties?