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. Delegation is an object oriented approach to






2. id is a...






3. When do you take ownership?...






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






5. Ready-made instances...






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






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






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






9. Name of the new class - it's superclass - the instance variables that each instance of this class has - and any methods this class implements






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






11. We can use dot notation to reference...

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






13. A view is a subclass of _






14. Defining variables - three parts...






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






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






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

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






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






20. Asking a class or object to execute a method






21. An instance is a device for maintaining state. It's a box for _ of data.






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






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






24. At the top of any implementation file...






25. NSSet...






26. 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.






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






28. Center and frame are used to _ your view






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






30. 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.






31. When making a tableView always...






32. C struct with a CGPoint origin and a CGSize size - in other words two c structs.






33. All objects are accessed using...






34. A responder is responsible for...






35. UITableViewController is a subclass of...






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






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






38. The integer prefix is...






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






40. 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






41. Reducing details to focus on the core concepts






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






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






44. NSDictionary...






45. In general - class methods tend to be factory methods - that is...






46. The designated initializer calls the _ designated initializer....

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47. When overriding a method - all you need to is _ - you do not need to declare it in the header file because it has already been declared by the superclass....






48. NSDate - class...






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






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