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






2. Cocoa objects that take variadic initializers






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






4. Methods that respond directly to user interface commands






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






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






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






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






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






10. Instance variables that are pointers to other objects






11. Objective C is a PURE SUPERSET of _____






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






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






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






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






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






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






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






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






20. ________is wrapping a primitive value in an object






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






22. C and Objective C differ in representing _______






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






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






25. NSValue can contain any _________ data type






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






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






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






29. _________ is a class cluster and never directly used






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






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






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






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






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






35. You usually DON'T use NSNib ________






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






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






38. ________ is Foundation's simplest type of collection






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






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






41. ________ is the most general boxing class






42. Actions of a view are implemented by ___________






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






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






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






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






47. __________ is mutable