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






2. NSValue can contain any _________ data type






3. Instance variables that are pointers to other objects






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






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






6. Objective C is a PURE SUPERSET of _____






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






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






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






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






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






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






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






14. __________ is mutable






15. ________ is Foundation's simplest type of collection






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






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






18. Actions of a view are implemented by ___________






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






20. Cocoa objects that take variadic initializers






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






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






23. You usually DON'T use NSNib ________






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






25. _________ is a class cluster and never directly used






26. Methods that respond directly to user interface commands






27. C and Objective C differ in representing _______






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






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






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






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






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






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






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






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






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






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






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






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






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






41. ________ is the most general boxing class






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






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






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






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






46. ________is wrapping a primitive value in an object






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