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






2. __________ is mutable






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






4. You usually DON'T use NSNib ________






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






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






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






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






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






10. Cocoa objects that take variadic initializers






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






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






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






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






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






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






17. Objective C is a PURE SUPERSET of _____






18. ________ is Foundation's simplest type of collection






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






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






21. _________ is a class cluster and never directly used






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






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






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






25. ________is wrapping a primitive value in an object






26. ________ is the most general boxing class






27. Methods that respond directly to user interface commands






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






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






30. Actions of a view are implemented by ___________






31. C and Objective C differ in representing _______






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






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






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






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






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






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






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






39. NSValue can contain any _________ data type






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






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






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






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






44. Instance variables that are pointers to other objects






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






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






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