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. Write a line of code creating a pointer to a wall paper image called 'wp1' that refers to a resource in an app with the file name 'wallPaper_01.png'

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2. The first method called when a user taps an application icon
image view
main()
'Software Development Kit'
instance variable


3. What are the guidelines for the class prefix for a project?

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4. If a method name includes a colon (:) this indicates a required _________
parameter
inspector and library
attributes
eXtensible Markup Language


5. This keyword in the property directive is related to memory management and refers to the idea that we want to maintain control of memory issues
IBOutlet
storyboard
retain
Actions


6. Class used for image manipulations such as scaling - rotation and translation. Its data structure represents a matrix used for affine transformations.
superclass
xcodeproj
CGAffineTransform
[[<class name> alloc] init];


7. Collection of interface elements and data storage elements etc you can access from your applications
512MB
Cocoa Touch
bgImages = [[NSArray alloc] initWithObjects: wp1 - wp2 - wp3 - wp4 - wp5 - nil];
CGAffineTransform


8. MVC
#import 'myFile.h'
Model-View-Controller
IBOutlet
productivity


9. Crash statement likely when an NSString is assigned a value with an incorrect format
Program received signal: EXC_BAD_ACCESS
ption+Command+Return
Single View Application
interface and implementation files


10. In your implementation file - the _____ method (provided in stub form by Apple) runs after machine language code reserves some space in memory for your View. This method is often used to create a 'clean slate' as an app opens.
The Console area of the Debug area
for(<initialization>;<test condition>;<update instruction>){/*do this over and over*/}
viewDidLoad
protocols


11. Process of creating an active object from a class
NSURLRequest
instantiation
57 x 57
above


12. Defines what an object can do
class
id
Integrated Development Environment
NSMutableArray


13. Tests to see whether two values are equal
Nib (but a few call it 'zib' but that's not preferred)
==
alpha
header


14. Always used to end the list of objects when initializing an array
nil
graduationParty ... addAttendee:withDish
@2x
@


15. Shortcut for writing: x = x - 1;
for(<initialization>;<test condition>;<update instruction>){/*do this over and over*/}
ption+Command+Return
x--;
scene


16. Size of iPhone 'lo-res' icon image in pixels
hash
:
performance
57 x 57


17. Delimiter for a list of protocols
<>
Option+Command+4
Option-click a symbol
instantiate


18. An example of a common collection data type
Identity Inspector
NSArray
switch
UIPicker


19. Syntax for reserving memory and initializing an object
:
myImage@2x.png
count++;
[[<class name> alloc] init];


20. Negation symbol
boiler-plate
@synthesize directive
onscreen 'widgets' a user can interact with
!


21. Development approach (design pattern) to structure iOS applications
segmented control
Model-View-Controller
void
UIImageView


22. ______ and ______ define the connections between scenes.
productivity
//blah blah blah
self
Seques .... relationships


23. OOP
Object-oriented programming
scene
Isolate the functional components of an app
instantiate


24. If you have an image file called 'myImage.png' and you make a hi-res version for the retina display - what should be the name of the new file?
==
Application Programming Interface
myImage@2x.png
UIImage *wp1 = [UIImage imageNamed:@'wallPaper_01.png'];


25. Class that creates an array capable of being changed after it is create
NSMutableArray
Jump Bar
float
token


26. A class that implements a protocol is said to ____ to that protocol
<type> <variableName>;
Right-click on it in the Navigator panel and choose 'Open as...' and select 'Source Code'
accessible apps
conform


27. Declare and initialize a string that says: 'Hello World' whose identifier if 'phrase' . Use the shortest command possible.

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28. Syntax for sending an object a message with no parameters
png
control-dragging
[<object variable> <method name>];
%@


29. Character used to show an element as a literal string
storyboard
@
Cocoa Touch
114 x 114


30. A view has a 'Shrink' button whose label needs to change once it is clicked to 'Grow'. Write a 'message' type command to change it's label to 'Grow'

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31. Syntax for block-comment
UIImageView
/*blah blah blah */
<>
IBOutlet


32. Under what circumstances would you need an outlet for a button if it's just needed to trigger an action?

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33. Write a statement to declare and initialize a label object called 'myLabel' to 'GO!'

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34. The Inspector you will need if you want to connect a custom class to an object in Interface Builder
storyboard
Identity Inspector
1024 x 768
h


35. This Xcode utility allows you to check CPU usage - memory allocation and network/file access (among other things)
Instruments
id
%1.2f
Document Outline Area or Outline View


36. Calling a method is the same as...
NSDate
sending an object a message
Option+Command+4
image view


37. Purpose of 'Secure' attribute for text fields
inspector and library
Treats the field as a password - hiding each character as it is typed
[myLabel setText:@'Howdy'];
implicitly declare a matching instance variable


38. Apps written to assist users with special disabilities
token
accessible apps
To provide a convenient way of setting the button's title in the code
id


39. What computer language is the storyboard written in?
immersive
IBAction)moveMe:(id)sender;
XML
UILabel *myLabel = [[UILabel alloc] init];


40. Define a collection of methods to perform a task
||
protocols
Object-oriented programming
prototyping


41. @property directives should be placed ____ (above or below) any IBActions in the header file
1024 x 768
Command+S
&&
above


42. Another name for a 'button bar'
Command+R
segmented control
interface file
Model-View-Controller


43. Size of iPhone retina icon image in pixels
while(<boolean expression>){/*stuff to do here*/}
114 x 114
Object-oriented programming
mutators


44. An _______ is used to 'advertise' a method in your code that should be called when a certain event takes place
IBAction
m
control-dragging
controller


45. How do you get rid of an onscreen keyboard?

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46. Allows you to easily track multiple versions of your project
com.basicversity
2
Snapshot feature
instance variable


47. Way to refer to an object within its own methods
#import 'myFile.h'
storyboards
main()
self


48. Key sequence to open the Project Navigator (left panel)
Program received signal: EXC_BAD_ACCESS
@synthesize
Command+1
parameter


49. Term used to describe each screen of an iPhone app
Command+1
@synthesize directive
view
protocols


50. Code fragment for echo printing the name of a function as it loads (for tracing the sequence of code in a project...leaving breadcrumbs)

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