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






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






3. _________ is a class cluster and never directly used






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






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






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






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






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






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






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






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






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






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






14. Objective C is a PURE SUPERSET of _____






15. C and Objective C differ in representing _______






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






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






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






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






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






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






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






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






24. You usually DON'T use NSNib ________






25. Instance variables that are pointers to other objects






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






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






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






29. Actions of a view are implemented by ___________






30. NSValue can contain any _________ data type






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






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






33. ________ is the most general boxing class






34. ________is wrapping a primitive value in an object






35. __________ is mutable






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






37. ________ is Foundation's simplest type of collection






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






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






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






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






42. Cocoa objects that take variadic initializers






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






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






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






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






47. Methods that respond directly to user interface commands