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. A _ handles touch events.






2. What happens when the last owner calls release?

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3. NSDate - class...






4. Each _ has a 'designated' initializer method....






5. NSDictionary...






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






7. Files Owner...






8. UITableViewController is a subclass of...






9. Name of the method to be executed






10. If the view has no subviews - create it programmatically; if it has subviews






11. The root view controller typically creates the next view controller - and the next _ creates the one after that






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






13. UIViewController has several methods that get called at certain times...






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






15. NSValue - class...






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






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






18. Class methods typically either create






19. NSArray - important methods...






20. Reference Counting...






21. Delegation is an object oriented approach to






22. Reducing details to focus on the core concepts






23. What does autorelease mean?






24. Prefixing a character string with an @ symbol [specific - NSString class]...






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






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

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27. 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.






28. How do I implement my drawRect?






29. Three ways instances are created...






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






31. A view represents a _ area






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






33. In Cocoa Touch - the table view asks another object _ what it should display...






34. @property - is using methods...






35. super - is used...






36. 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.






37. [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.






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






39. @property declares - and _ implements the setter and getter...






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






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






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

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43. if you implemented both the setter and getter - the @synthesize method...






44. Hold data and know nothing about the user interface






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






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






47. When do you take ownership?...






48. In a class method you cannot access...






49. A block of statements identified by a name that can accept one or more arguments passed to it by value and can optionally return a value






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