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






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






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






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






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






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






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






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






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






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






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






12. ________is wrapping a primitive value in an object






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






14. You usually DON'T use NSNib ________






15. _________ is a class cluster and never directly used






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






17. Cocoa objects that take variadic initializers






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






19. Objective C is a PURE SUPERSET of _____






20. ________ is the most general boxing class






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






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






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






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






25. Actions of a view are implemented by ___________






26. __________ is mutable






27. NSValue can contain any _________ data type






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






29. Methods that respond directly to user interface commands






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






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






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






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






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






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






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






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






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






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






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






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






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






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






44. C and Objective C differ in representing _______






45. Instance variables that are pointers to other objects






46. ________ is Foundation's simplest type of collection






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