Test your basic knowledge |

Objective C Programming Basics

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. A _______ method is one that is likely to be unsupported in the future. It's use should be discontinued.






2. A logical subdivision of a program within which all names must be unique. Symbols in one do not conflict with identically named symbols in another.






3. A message sent from one application to an object in another application.






4. In object-oriented programming an expression that sends a message to an object. In the Objective-C language they are enclosed within square brackets and consist of a receiver followed by a message (method selector and parameters).






5. Objective-C's protocols are really about communicating _____ _______






6. In computer science the mathematical concept of 'order of operations' is known as the 'order of ______'






7. This symbol denotes a method as being an instance method






8. Objective-C borrows much of its syntax from ______ one of the earliest object-oriented languages






9. A protocol that's declared with the @protocol directive. Classes can adopt these - objects can respond at runtime when asked if they conform to them and instances can be typed by those that they conform to.






10. The Objective-C runtime table that contains entries that associate method selectors with the class-specific addresses of the methods they identify.






11. Pointers are declared by placing a(n) ___ between the type declaration and the variable name






12. Each class should have a ______ initializer a single method responsible for performing all of the object's setup and initialization.






13. Instance variables are optional in iOS if ________ are used






14. Xcode sequence to convert non-ARC apps to ARC






15. In object-oriented programming the ability of different objects to respond each in its own way - to the same message.






16. Same as class object. (second way to say it.)






17. A remote message that returns immediately without waiting for the application that receives the message to respond. The sending application and the receiving application act independently and are therefore not in sync.






18. Property attribute where the setter stores the assigned value but does not perform any memory management.






19. In Objective-C floats are more commonly used than ______






20. A ____ _____ is where you forget to free up memory






21. Protocols are adopted by adding a ____________ list of protocols inside angled brackets after the superclass declaration in a class's @interface block






22. If you are compiling an application with ARC (Automatic reference Counting) you _______ store Objective-C objects inside a struct






23. Same as class object. (first way to say it.)






24. C-style strings always end with a ____ character






25. A tool that lets you graphically specify your application's user interface. It sets up the corresponding objects for you and makes it easy for you to establish connections between these objects and your own code where needed.






26. An architecture that facilitates communication between objects in different address spaces.






27. Rather than using arrays in Objective-C we often are able to use it's collection classes of NSArray - NSSet and NSDictionary with _____ for strings






28. Another name for a class that's defined solely so that other classes can inherit from it.






29. Objective-C methods are called using ____ _____






30. The part of an Objective-C class specification that defines public methods (those declared in the class's interface) as well as private methods (those not declared in the class's interface).






31. The root class in Objective-C






32. Property attribute that synthesizes only a getter for the property






33. Property attribute that causes the setter to store a copy of the assigned value






34. A protocol declared as a category usually as a category of the NSObject class.






35. There are ____ fundamental building blocks in Objective-C






36. 3 Common Float data types: float - _____ - CGFloat






37. _____ operators take 2 operands






38. In object-oriented programming a procedure that can be executed by an object.






39. Placing a ____ before a normal variable name gives it's address






40. In object-oriented programming the object that is sent a message.






41. Initializer method traditionally begin with the _____ prefix






42. The name of a method when it's used in a source-code message to an object or the unique identifier that replaces the name when the source code is compiled.






43. ______ operators take a single operand






44. ______ data types are always zero or greate






45. When creating a class header file you begin with the _____ keyword and close with the @end keyword






46. Any method that can be used by an instance of a class rather than by the class object.






47. A set of method definitions that is segregated from the rest of the class definition.






48. A prototype for a particular kind of object; declares instance variables and defines methods for all members of the class.






49. In the Objective-C language an object that belongs to (is a member of) a particular class; created at runtime according to the specification in the class definition.






50. An object in another application - one that's a potential receiver for a remote message.