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. Name of the method to be executed






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

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3. Reference Counting...






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






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






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






7. 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 _.






8. A set of variables and associated methods. An object can be sent messages to cause one of its methods to be executed.






9. UITableViewController is a subclass of...






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






11. Hold data and know nothing about the user interface






12. Three ways instances are created...






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






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






15. Files Owner...






16. [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.






17. Center and frame are used to _ your view






18. A message is always contained in square brackets - and has three parts






19. 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.






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






21. When do you take ownership?...






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






23. @property - is using methods...






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






25. NSDate - class...






26. A function in the objective c library that simply displays or logs it's argument






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






28. 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.






29. A view represents a _ area






30. A responder is responsible for...






31. Why properties?






32. In any application with UINavigationController - the navigation controller...






33. Defining variables - three parts...






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






35. If you have extra work you want to do on the view...






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






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






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






39. When do we need to release our outlets?

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40. NSValue - class...






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






42. A _ handles touch events.






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






44. UIView - designated initializer...






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






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






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






48. 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 _.






49. super - is used...






50. NSArray - important methods...