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






2. 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 _.






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






4. UIView - designated initializer...






5. In Objective C - the name of a setter method is set plus the name of the instance variable it is changing - for example PossessionName would be...






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






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. UIImageView is used to...






9. Number one use of protocols in iOS...






10. Three ways instances are created...






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






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






13. If a break statement is executed from within a set of nested loops...






14. The designated initializer calls the _ designated initializer....

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






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






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






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






19. Center and frame are used to _ your view






20. NSNumber - class...






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






22. NSArray - class...






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






24. Reference Counting...






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

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26. 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






27. You use _ to implement the view






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






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






30. A view is a subclass of _






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






32. A view is an...






33. Class methods typically either create






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






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






36. Designated initializer makes sure that every...






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






38. Hold data and know nothing about the user interface






39. Variable names tend to start with a _ letter; class names tend to start with an _ letter.






40. 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.






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

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42. Reducing details to focus on the core concepts






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






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






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






46. super - is used...






47. Proceed through the loop - jump back to the top and check again






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






49. 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






50. Execution of the break statement...