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. Extension for an iPhone/iPad app
xcodeproj
!
pipe
NO


2. Implements a logical OR condition
||
parameter
parameter
pound


3. IB

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4. A transition between scenes - frequently with a visual transition effect applied
segue
while(<boolean expression>){/*stuff to do here*/}
static
Command plus the navigator's position in the selector. For example - the project navigator shortcut is Command-1


5. To use a new class you need to _____ it
convenience
<type> <variableName>;
instantiate
web view


6. An alternative way to see the connections between an object in the Interface Builder and it's code in Xcode without using the Connections inspector

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

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8. Correct the error: label.text = 'Hello World !';

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9. What type of object does a web view expect as a parameter when loading a remote URL?
NSURLRequest
Attributes Inspector
nonatomic
scene


10. An example of a common collection data type
NSMutableArray
y *= 5;
NSArray
Look at the three icons at the upper left portion of the Debug console. The far left one - 'Show only the Variables View' will not show the NSLog-ed information. Click the center icon ('Show the Variables View and the Console') or the right icon ('Sh


11. Syntax for declaring a variable
do{/*stuff to do here*/}while(<boolean expression>);
Utility apps
NSDate
<type> <variableName>;


12. Symbol used for inheritance
bgImages = [[NSArray alloc] initWithObjects: wp1 - wp2 - wp3 - wp4 - wp5 - nil];
Model-View-Controller
pipe
:


13. Formatting placeholder for a floating point value with one digit on the left of the decimal and two digits on the right
%1.2f
int
Object-oriented programming
IBOutlet


14. Companion to the @property directive
-
variable
'Interface Builder'
@synthesize


15. Given: #import <UIKit/UIKit.h> @interface WelcomeViewController : UIViewController @end The superclass for WelcomeViewController
Human Interface Guide
Program received signal: EXC_BAD_ACCESS
x--;
UIViewController


16. The name of the panel to the left of the Interface Builder Editor panel
utility
x--;
proxy
Document Outline Area or Outline View


17. What event do you use to detect a button tap?
Touch Up Inside
myImage@2x.png
Actions
controller


18. This type of app is mostly custom controllers and graphics
@
UIImageView
conform
immersive


19. An app has boolean variables 'hasShrunk' and 'hasMoved'. Write a boolean condition that checks if each are true
hasShrunk==YES && hasMoved == YES
instance variable
UILabel *myLabel = [[UILabel alloc] init];
*


20. Size of iPhone retina icon image in pixels
NSMutableString
Home button
Hold down the Option key and point to the other label. The distance will be shown
114 x 114


21. The Utilities area has two sections: ______ and ______
int
NSDate
inspector and library
%1.2f


22. Apple's classes often provide a special initialization method called a _____ method
double
First Responder
convenience
UIImage *wp1 = [UIImage imageNamed:@'wallPaper_01.png'];


23. A class that implements a protocol is said to ____ to that protocol
NSMutableString
conform
IBOutlet
bgImages = [[NSArray alloc] initWithObjects: wp1 - wp2 - wp3 - wp4 - wp5 - nil];


24. Property affecting an element's transparency
NO
alpha
%1.2f
storyboards


25. 4 Top down technology layers making up iOS
Cocoa Touch - Media - Core Services - Core OS
NSString *phrase = @'Hello World';
Something unique - based on the app's name (perhaps abbreviated). Avoid 'NS' or 'UI' since they are used in Apple's frameworks. A framework or library should always be prefixed. For a simple app - they are not necessary.
To provide a convenient way of setting the button's title in the code


26. Always used to end the list of objects when initializing an array
'Software Development Kit'
nil
view controller
segue


27. Every iOS application implements a subclass of _________
modal views
contentSize
Scheme
UIApplication


28. Denotes a class method
+
Utility apps
debugger
class


29. You have an instance variable called 'myLabel' that is a member of UILabel. In an app - you set it's text property to 'Howdy' with the correctly-written command: myLabel.text = @'Howdy'; Re-write this command using [ ] message-sending syntax

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30. A virtual 'box' for organizing related projects
Command+1
workspace
controller
token


31. Used to display image file resources and show simple animations
image view
NSArray
view controller
Command + Tab


32. Alternative selection mechanism when many conditions exist
switch
for(<initialization>;<test condition>;<update instruction>){/*do this over and over*/}
YES
//blah blah blah


33. Implements a logical AND condition
YES
&&
interface and implementation files
switch


34. Write a statement to declare and initialize a label object called 'myLabel'
Identity Inspector
<>
NO
UILabel *myLabel = [[UILabel alloc] init];


35. _____ are methods that we can connect to events.
Actions
Isolate the functional components of an app
header
Double-click


36. RAM for iPhone
==
512MB
Determine how controls resize/reposition themselves when a device changes orientation
myImage@2x.png


37. Symbol often denoting a 'pointer'
Cocoa is the development framework used for most native Mac OS X applications; Cocoa Touch is customized for a touch interface
*
==
float


38. NS stands for...
NeXSTEP
#import 'myFile.h'
storyboard
self


39. Another name for a 'button bar'
switch
Single View Application
&&
segmented control


40. Class used to work with dates as objects
storyboards
!=
NSDate
@2x


41. This file contains the scene - segue and relationship definitions for your project
storyboard
320 x 480
implementation file
class


42. Negation symbol
void
IBOutlet
pipe
!


43. getters
accessors
scene
nonatomic
below


44. The goal of the MVC design pattern
NSString
NSLog(@'%s' - __FUNCTION__);
attributes
Isolate the functional components of an app


45. Word used to indicate that a user can't interact with a given element
static
<type> <variableName>;
IBAction
parameter


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

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47. Attribute that informs the system that the object referred to needs to be kept around and not discarded from memory
strong
view controller
UILabel *myLabel = [[UILabel alloc] initWithString:@'GO!'];
UIApplication


48. A fully opaque image has an _______ property value of ______
UIImageView
Option+Command+4
alpha ... 1
First Responder


49. strong and nonatomic are examples of ...
contentSize
storyboards
header
attributes


50. Collection of interface elements and data storage elements etc you can access from your applications
@2x
Cocoa Touch
immersive
view controller