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. Actions of a view are implemented by ___________






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






3. Methods that respond directly to user interface commands






4. Interface Builder creates ___________ and instances of your own classes that may be joined to UI objects






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






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






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






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






9. NSValue can contain any _________ data type






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






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






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






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






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






15. __________ is mutable






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






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






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






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






20. _________ is a class cluster and never directly used






21. Cocoa objects that take variadic initializers






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






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






24. Objective C is a PURE SUPERSET of _____






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






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






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






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






29. You usually DON'T use NSNib ________






30. Instance variables that are pointers to other objects






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






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






33. C and Objective C differ in representing _______






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






35. ________is wrapping a primitive value in an object






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






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






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






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






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






41. ________ is the most general boxing class






42. ________ is Foundation's simplest type of collection






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






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






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






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






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