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. super - is used...






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






3. A _ handles touch events.






4. Just a floating point number - but we always use it for graphics.






5. @property - is using methods...






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






7. What happens when the last owner calls release?

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






9. Hold data and know nothing about the user interface






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






11. Instance Variables by default are called @protected meaning...






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






13. How do I implement my drawRect?






14. A UITableView usually needs three different pieces...






15. Files Owner...






16. Delegation is an object oriented approach to






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. 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 _.






19. 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






20. In Objective C arrays can hold only...






21. Name of the method to be executed






22. NSString *s = @'Hello - World'; is an example of...






23. UIImageView is used to...






24. Origin of a view's coordinate system is _ left






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






26. Ready-made instances...






27. A view is an...






28. For view controllers that are closely related - like a table view controller and its detail view controller - you can simply give them _ that point to each other.






29. NSDate - class...






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






31. Also - because arrays only hold a pointer to an object...






32. Reference Counting...






33. A view represents a _ area






34. When an object is added to a NSMutableArray - that object is sent the message to retain;...






35. NSDictionary...






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






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






38. Archiving works by creating an instance of _ - which is essentially just a container for data - and placing objects and their data inside it.






39. Use of class methods - there are three...






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






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






42. 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 _.






43. Views have three properties related to their location and size: @property _ _;






44. Each individual instance is a bundle of data that it maintains. Typically that data is private - which means that it's encapsulated as well; no other object knows what that data is or in what form it is kept. The only way to discover from outside wha






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






46. In object oriented languages - we call methods that get and set instance variables

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47. Center and frame are used to _ your view






48. When do you take ownership?...






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






50. 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.