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. C and Objective C differ in representing _______






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






4. Methods that respond directly to user interface commands






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






6. NSValue can contain any _________ data type






7. ________ is the most general boxing class






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






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






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






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






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






13. Instance variables that are pointers to other objects






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






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






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






17. You usually DON'T use NSNib ________






18. Actions of a view are implemented by ___________






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






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






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






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






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






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






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






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






27. __________ is mutable






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






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






30. ________ is Foundation's simplest type of collection






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






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






33. Objective C is a PURE SUPERSET of _____






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






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






36. ________is wrapping a primitive value in an object






37. _________ is a class cluster and never directly used






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






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






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






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






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






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






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






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






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






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