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. Ready-made instances...






2. Property List...






3. How do I implement my drawRect?






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






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






6. 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 _.






7. 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.






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






9. UIImageView is used to...






10. All objects are accessed using...






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






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






13. When an object is removed from an NSMutableArray - that object is sent the message release;...






14. 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.






15. When do you take ownership?...






16. When the message endEditing: is sent to a view - if it or any of its subviews or currently the _ - it will resign its first responder statues - and the keyboard will be dismissed.






17. id is a...






18. When you send a message to _ - you are sending a message to _ - but demanding that the search for the method begin at the superclass....






19. Asking a class or object to execute a method






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






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






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






23. The integer prefix is...






24. super - is used...






25. [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.






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






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






28. 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 _.






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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


30. 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






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






32. In general - in Objective-C - a reference to an instance is a _ - and the name of the data type of what's at the far end of that pointer is the name of the instances's _.






33. What does autorelease mean?






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






35. Classes describe two things...






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






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






38. Three ways instances are created...






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






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






41. NSValue - class...






42. 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






43. @property - is using methods...






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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






46. Primitives and C Structures...






47. A responder is responsible for...






48. Delegation is an object oriented approach to






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






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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183