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. In a format string the place holder for an object is ______






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






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






4. ____ provide a concise & elegant method for defining a discrete set of values






5. An advanced object-oriented development platform in Mac OS X; a set of frameworks whose primary programming interfaces are in Objective-C.






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






7. Data types are divided into two main categories: integer and ______






8. The time after a program is launched and while it's running. Decisions made at during this time can be influenced by choices the user makes.






9. An object of unknown class. Interface is published through protocol declaration.






10. In C all functions pass their arguments by ____ which means the compiler makes local copies of those arguments






11. Procedures (like verbs) are processes that manipulate or transform data and in Objective-C these 3 elements are _____ - functions and methods






12. A compiler feature that provides automated memory management






13. A programming technique that hides the implementation of an operation from its users behind an abstract interface; allows the implementation to be updated or changed without impacting the users of the interface.






14. 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.






15. A class that's defined solely so that other classes can inherit from it. Programs don't use instances of this; they use only instances of its subclasses.






16. The init... method that has primary responsibility for initializing new instances of a class. Each class defines or inherits its own. Through messages to self other init... methods in the same class directly or indirectly invoke it and then it - thro






17. Giving the compiler information about what kind of object an instance is - by typing it as a pointer to a class.






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






19. Finding the method implementation to invoke in response to the message






20. Symbol used to denote a placeholder in a format string






21. The part of an Objective-C class specification that declares its public interface which includes its superclass name & instances variables and public-method prototypes.






22. A Cocoa framework that implements an application's user interface; provides a basic program structure for applications that draw on the screen and respond to events.






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






24. All objects are created on the _____






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






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






27. The time when files compiled from different source modules are linked into a single program. Decisions made by the linker are constrained by the compiled code and ultimately by the information contained in source code.






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






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






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






31. 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






32. Initializer method traditionally begin with the _____ prefix






33. _____ data types can be both positive and negative






34. Objective-C objects should use strong or weak ______






35. The root class in Objective-C






36. A ____ ____ is a situation where you free memory and then accidentally continue to use it






37. A memory-management technique in which each entity that claims ownership of an object increments the object's reference count and later decrements it; allows one instance of an object to be safely shared among several other objects.






38. An object that acts on behalf of another object.






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






40. This symbol denotes a method as being a class method






41. In the Objective-C language the declaration of a group of methods not associated with any particular class.






42. 3 Common Float data types: float - _____ - CGFloat






43. The process of setting or reading the value at an address pointed to by a pointer






44. In object-oriented programming the ability of a superclass to pass its characteristics (methods and instance variables) on to its subclasses.






45. 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.






46. A programming unit that groups together a data structure (instance variables) and the operations (methods) that can use or affect that data; the principal building blocks of object-oriented programs.






47. A remote message that doesn't return until the receiving application finishes responding to the message. Because the application that sends the message waits for an acknowledgment or return information from the receiving application - the two applica






48. A class is said to do this when it declares that it implements all the methods in the protocol.






49. Any class that's one step below another class in the inheritance hierarchy.






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