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 message send is a higher-level version of a ____________






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






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






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






5. _________ is a class cluster and never directly used






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






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






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






9. C and Objective C differ in representing _______






10. Instance variables that are pointers to other objects






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






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






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






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






15. NSValue can contain any _________ data type






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






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






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






19. Cocoa objects that take variadic initializers






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






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






22. You usually DON'T use NSNib ________






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






24. Objective C is a PURE SUPERSET of _____






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






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






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






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






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






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






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






32. ________ is Foundation's simplest type of collection






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






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






35. ________ is the most general boxing class






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






37. Methods that respond directly to user interface commands






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






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






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






41. Actions of a view are implemented by ___________






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






43. __________ is mutable






44. ________is wrapping a primitive value in an object






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






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






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