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. Cocoa objects that take variadic initializers






2. _________ is a class cluster and never directly used






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






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






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






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






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






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






9. ________is wrapping a primitive value in an object






10. ________ is Foundation's simplest type of collection






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






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






13. ________ is the most general boxing class






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






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






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






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






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






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






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






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. NSValue can contain any _________ data type






24. Actions of a view are implemented by ___________






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






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






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






28. Methods that respond directly to user interface commands






29. You usually DON'T use NSNib ________






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






31. __________ is mutable






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






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






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






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






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






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






38. Objective C is a PURE SUPERSET of _____






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






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






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






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






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






44. Instance variables that are pointers to other objects






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






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






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