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. When do we need to release our outlets?

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






3. NSDate - class...






4. A delegate is a pointer to an object with a set of methods the delegate-holder knows how to call. In other words - it's _ from a later created object






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






6. Defining variables - three parts...






7. NSSet...






8. Execution of the break statement...






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

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10. Why properties?






11. class methods...






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






13. super - is used...






14. A responder is responsible for...






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






16. All objects are accessed using...






17. A view is a subclass of _






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






19. 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.






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






21. Files Owner...






22. Also - because arrays only hold a pointer to an object...






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

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






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






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






27. Asking a class or object to execute a method






28. Primitives and C Structures...






29. NSDictionary...






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






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






32. A _ handles touch events.






33. In Objective C arrays can hold only...






34. How do I implement my drawRect?






35. 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....






36. UIImageView is used to...






37. Name of the method to be executed






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






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






40. Each object does its own job - and presents to the rest of the world - to other objects - and indeed in a sense to the programmer - an opaque wall whose only entrances are the methods to which it promises to respond and the actions it promises to per






41. What happens when the last owner calls release?

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






43. 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






44. The designated initializer calls the _ designated initializer....

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






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






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






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






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

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

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