Instructions:

• Answer 50 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. What happens when the last owner calls release?

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2. class methods...
group of global functions already assigned to this class
pointers
type - name and value
to get and set variables


3. Center and frame are used to _ your view
C Functionn
position
view
implementation


4. NSDictionary...
instance
Hash table - Look up objects using a key to get a value.
instance variable of an object is valid
rectangular


5. Files Owner...
Object wrapper around primitive types like int - float - double - BOOl
references to objects
Is a placeholder object
Controller Objects[Managers]


6. A delegate is a pointer to an object with a set of methods the delegate-holder knows how to call. In other words - it's _ from a later created object
parentViewController
a mechanism to enable specific callbacks
NSLog routine
method


7. A view represents a _ area
is an instance of that class
rectangular
ordered collection of objects - immutable
superclass's


8. The class is responsible for what instance variables the instance has - but not the _ of those variables.
you always return the newly initialized object(return self)
values
Anytime you call a method with new - alloc or copy. You own and must release that object.
class methods - initializers


9. Three ways instances are created...
ready-made instances - instantiation from scratch - and nib based instantiation
wait until the loop finishes processing the event - at the end release it
the array relinquishes ownership of that object and no longer has a pointer to it
values


10. The root view controller typically creates the next view controller - and the next _ creates the one after that
message
draw images
variable scope - if defined within a block
view controller


11. In general - class methods tend to be factory methods - that is...
to give it someone else - or another object
view
methods for generating an instance
collection of collections - NSArray of an NSArray


12. When the message endEditing: is sent to a view - if it or any of its subviews or currently the _ - it will resign its first responder statues - and the keyboard will be dismissed.
first responder
is an instance of that class
UIViewController
size and position


13. Each _ has a 'designated' initializer method....
C Functionn
Is a placeholder object
class
NSLog routine


14. Order of the declarations for methods. _ come first - followed by _ - followed by any other methods...
draw images
view controller's initialization method
class methods - initializers
Encapsulation of functionality


15. All objects are accessed using...
pointers
is called every time the event occurs
CGRect bounds - GCPoint center - CGRect frame
rectangular


16. NSString objects are usually sent _ rather than _...
NSLog routine
object
copy - retain
position


17. We can use dot notation to reference...

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18. When an NSMutableArray is deallocated - it sends...
data source - view controller and delegate
has one root view controller
creating an initializer
the message release to all its entries


19. A pointer to the object being asked to execute a method
Core Graphics Framework
receiver[message]
message
a mechanism to enable specific callbacks


20. If you have extra work you want to do on the view...
unordered collection of objects - objects must be unique
count - objectAtIndex - makeObjectsPerformSelector - sortedArrayUsingSelector - lastObject
do so in viewDidLoad
the instance variables


21. A _ handles touch events.
CGRect bounds - GCPoint center - CGRect frame
view
instance variables
creates an instance of NSString that holds the character string


22. In the last line of an init method...
you always return the newly initialized object(return self)
in the dealloc - or when a Controller's view is 'unloaded'
create a XIB file
for inheritance - adopting the superclasses implementation


23. What does autorelease mean?
wait until the loop finishes processing the event - at the end release it
receiver - selector - arguments
they need to be defined in the implementation file
pointers


24. When an object is added to a NSMutableArray - that object is sent the message to retain;...
the array becomes an owner of that object and has a pointer to it.
callbacks
message
view controller's initialization method


25. Ready-made instances...
delegates and dataSources
calling code that does the instantiation for you
causes the program to immediately exit from the loop it is executing - whether its for - while or do
@synthesize


26. Why properties?
an object's property
instance
safety - subclassability and makes code look more consistent with C structs
parentViewController


27. When a view controller presents a modal view controller - the _ of the modal view controller is set to be the parent of the presenting controller
Core Graphics Framework
parentViewController
accessors - individually we call them 'getters' and 'setters'
they need to be defined in the implementation file


28. A collection object - an ordered list of objects that can be accesed by an index
message
array[class - NSMutableArray]
Maintenance of state
new instances of the class or retrieve some global property of the class.


29. If a break statement is executed from within a set of nested loops...
method
variable scope - if defined within a block
the array relinquishes ownership of that object and no longer has a pointer to it
only the innermost loop in which the break is executed is terminated


30. In object oriented languages - we call methods that get and set instance variables

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31. In Objective C - the name of a setter method is set plus the name of the instance variable it is changing - for example PossessionName would be...
storage
setPossessionName
'getters' and 'setters'
viewWillDissapear: and viewWillAppear:


32. If a class declares a _ that is different from its superclass - you must override the superclass' _ to call the new _...
attributes - behavior
header files declare
Core Graphics Framework
designated initializer


33. At the top of any implementation file...
you must import the header file of that class
unordered collection of objects - objects must be unique
CF - Ref
pointers


34. SomeClass* aVariable = [[SomeClass alloc] init]; is an example of what kind of instance?
Instantiation from scratch
Functions
data source - view controller and delegate
pointer - class


35. Prefixing a character string with an @ symbol [specific - NSString class]...
creates an instance of NSString that holds the character string
instance variable of an object is valid
initializer
to get and set variables


36. Name of the new class - it's superclass - the instance variables that each instance of this class has - and any methods this class implements
header files declare
protocol
alloc - singleton - informational utility method?
class methods - initializers


37. NSArray - important methods...
unordered collection of objects - objects must be unique
%d
count - objectAtIndex - makeObjectsPerformSelector - sortedArrayUsingSelector - lastObject
a single-array can contain objects of different types


38. Each individual instance is a bundle of data that it maintains. Typically that data is private - which means that it's encapsulated as well; no other object knows what that data is or in what form it is kept. The only way to discover from outside wha
Anytime you call a method with new - alloc or copy. You own and must release that object.
Maintenance of state
methods
nil


39. When an object is removed from an NSMutableArray - that object is sent the message release;...
object
safety - subclassability and makes code look more consistent with C structs
receiving and handling events that are associated with it
the array relinquishes ownership of that object and no longer has a pointer to it


40. When do we need to release our outlets?

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41. @property declares - and _ implements the setter and getter...
receiving and handling events that are associated with it
@synthesize
Used to find the time right now or to store past or future time/dates
for inheritance - adopting the superclasses implementation


42. Hold data and know nothing about the user interface
draw images
superclass's
to give it someone else - or another object
Model Objects[Factory Worker]


43. When do you take ownership?...
Anytime you call a method with new - alloc or copy. You own and must release that object.
attributes - behavior
subview(s)
Used to find the time right now or to store past or future time/dates


44. Never access a view controller's view in that...

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45. Origin of a view's coordinate system is _ left
upper
ordered collection of objects - immutable
pointers
view


46. C struct with a CGPoint origin and a CGSize size - in other words two c structs.
collection of collections - NSArray of an NSArray
CGRect
references to objects
Continue


47. In object oriented languages - we call methods that get and set instance variables accessors - individually we call them...

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48. NSString *s = @'Hello - World'; is an example of...
implementation
new instances of the class or retrieve some global property of the class.
declaration and initialization of a variable
type - name and value


49. When overriding a method - all you need to is _ - you do not need to declare it in the header file because it has already been declared by the superclass....
only the class and subclasses can access
class's
Generic object wrapper for other non-object data types
define it in the implemenation file


50. If you aren't going to initialize an instance reference pointer at the moment you declare it by assigning a real value - it's a good idea to assign it _.
You take ownership for an object you want to keep a pointer to
you always return the newly initialized object(return self)
Continue
nil