Test your basic knowledge |

Cocoa Programming Basics

Subject : it-skills
Instructions:
  • Answer 47 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. Interface Builder creates ___________ and instances of your own classes that may be joined to UI objects






2. Ensures that every object that has been autoreleased gets sent the release message






3. The two major additions to C by Objective-C are ________ and message sending






4. Prints the result of sending "description" to an object






5. Class libraries come from an implementation of _________ such as Cocoa or GNUstep






6. ________is wrapping a primitive value in an object






7. ____________ is NSString's one public subclass - and also a class cluster






8. It is not an error to send a message to _______






9. Target-action is appropriate for simple view events like button presses but not for __________ with multiple interactions






10. Objective-C is a set of _________-like object-oriented extensions to C






11. Standard files included through XCode:<Cocoa/Cocoa.h> and the standard C and _____ libraries






12. A "class cluster" of NSValue objects which is used to store single numerical values of any type from a char to a long long






13. Each segment of a _________ to be followed by an argument is suffixed with a colon






14. Here a delegate is used & a controller object that responds to a set of messages defined by the view






15. __________ forwards events from the event queue to the appropriate application window






16. Core Objective C define only defines two classes: Object and ______






17. Objective C is a PURE SUPERSET of _____






18. __________ is a structure whose first element is a pointer to a class






19. The three components of a message send:receiver - __________- and [optional] arguments






20. This opens a function or method or class name as a term in XCode






21. The ________ class is the programmatic interface to nib files






22. Instance variables that are pointers to other objects






23. Three types of collection classes provided by the Foundation: Sets - arrays and ________






24. __________ refers to an object's ability to look inside itself and change itself






25. The most important part of Objective-C is _______________






26. The four NON object types in Objective C: NSRange - ______ - NSSize and NSRect






27. __________ is mutable






28. Actions of a view are implemented by ___________






29. A view implement target action uses _______ and -setAction methods to select the object to call and the method to execute






30. A message send is a higher-level version of a ____________






31. _________ is a class cluster and never directly used






32. ________ is Foundation's simplest type of collection






33. Cocoa objects that take variadic initializers






34. The _____ is used to represent a pointer to an object






35. NSValue can contain any _________ data type






36. C and Objective C differ in representing _______






37. The basic changeable and unchangeable arrays are: __________ and NSMutableArray






38. The two ways of a new notifying a controller of a change: via an action; via a _________






39. _______ is a subclass (a class cluster) used to store any kind of single number from a char to a long






40. To modify a boxed number you must first unbox it and then perform your primitive ________ and then rebox it






41. ________object is like a constant it can't be changed - NsString is constant but NsMutableString isn't






42. _______ provides a build system & a code editor and a debugger






43. ________ is the most general boxing class






44. Methods that respond directly to user interface commands






45. You usually DON'T use NSNib ________






46. Two methods that must each concrete subclass of NSString override: -length and _________






47. Objects created through methods that retain alloc or new or copy or _________ must be explicitly released