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. 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.






2. Three ways instances are created...






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






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

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






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

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7. A pointer to the object being asked to execute a method






8. 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.






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






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






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






12. NSArray - class...






13. All objects are accessed using...






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






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






16. 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 _.






17. What does autorelease mean?






18. 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






19. A collection object - an ordered list of objects that can be accesed by an index






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






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






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






23. When do we need to release our outlets?

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24. super - is used...






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






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






27. NSDate - class...






28. Center and frame are used to _ your view






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






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






31. Classes describe two things...






32. 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....






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






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






35. A view represents a _ area






36. NSValue - class...






37. What happens when the last owner calls release?

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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. Number one use of protocols in iOS...






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






41. When making a tableView always...






42. Delegation is an object oriented approach to






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

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44. 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






45. Name of the method to be executed






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






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






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

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






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