Test your basic knowledge |

iOS 5 App Development Basics

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. Apple's classes often provide a special initialization method called a _____ method
convenience
stub
nibfile
alpha ... 1

2. Syntax for declaring a variable
Isolate the functional components of an app
accessible apps
retain - release - dealloc - autorelease
<type> <variableName>;

3. Postcondition repetition structure syntax
if(<boolean condition>){/* stuff to do*/} else{ /*stuff to do*/}
do{/*stuff to do here*/}while(<boolean expression>);
storyboard
label.text=@'Hello World!';

4. In the MVC design pattern for iOS apps - view consists of the various...

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

5. This file contains the scene - segue and relationship definitions for your project
320 x 480
Application Programming Interface
Command+S
storyboard

6. Data type for true/false type variables
!=
Program received signal: EXC_BAD_ACCESS
Commmand-R
bool

7. Language used to write iOS apps
Objective-C
scene
hasShrunk==YES && hasMoved == YES
prototyping

8. Scaling factor to make an image suitable for retina display
casting
512MB
strong
2

9. iPhone and iPad ____ support .png transparency
Model-View-Controller
do not
utility
nil

10. Boolean for 'false' in Objective-C
ption+Command+Return
boiler-plate
NO
for(<initialization>;<test condition>;<update instruction>){/*do this over and over*/}

11. XML
Group
Cocoa Touch - Media - Core Services - Core OS
eXtensible Markup Language
Command plus the navigator's position in the selector. For example - the project navigator shortcut is Command-1

12. Other name for an *.xib file
NSMutableString
nibfile
h
retain

13. Single line text field
UITextField
Double-click
retain
YES

14. Modulus (remainder) operator
NSURLRequest
320 x 480
%
NSString

15. Class that creates an array capable of being changed after it is create
NSMutableArray
interface file
boiler-plate
scene

16. 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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

17. The object currently in control and interacting with the user
First Responder
NSMutableArray
token
Command+R

18. Write a statement to declare and initialize a label object called 'myLabel'
114 x 114
Double-click
UILabel *myLabel = [[UILabel alloc] init];
NSArray

19. Defines the functional building blocks (classes) that make iOS devices perform certain actions
UITextField
Gray circle with a white 'X' in it - positioned to the right of the text field box
Cocoa Touch
CGAffineTransform

20. Memory aid for keyboard shortcuts in the Navigator panel

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

21. 'plist' stands for...
implicitly declare a matching instance variable
property list
[shrinkButton setTitle:@'Grow' forState: UIControlStateNormal];
label

22. Key sequence to save an Xcode file
view controller
Option+Command+ 0
NSURLRequest
Command+S

23. An _______ is used to enable your code to talk to objects within views
NSObject
Disables the Return key on the keyboard unless the user has entered at least a single character of input into the field
IBAction)moveMe:(id)sender;
IBOutlet

24. Return type indicating a method returns nothing
inspector and library
if(<boolean condition>){/* stuff to do*/} else{ /*stuff to do*/}
Command+0
void

25. The library that contains the objects you can add to a view or XIB file
nonatomic
YES
Object library
y *= 5;

26. This type of app is mostly custom controllers and graphics
Integrated Development Environment
hash
immersive
Identity Inspector

27. The 'First Responder' in a scene is not an object it is considered a ________
conform
proxy
Cocoa Touch
segue

28. Precondition repetition structure syntax
-
Integrated Development Environment
||
while(<boolean expression>){/*stuff to do here*/}

29. IDE for iPhone Development
nibfile
Xcode
@end
Scheme

30. A skeleton (holding place) or framework of code that will be completed in the future; provided initially so code will compile (but it may not function)
stub
[shrinkButton setTitle:@'Grow' forState: UIControlStateNormal];
Snapshot feature
nil

31. Given: [graduationParty addAttendee: @'Aunt Jane' withDish: @'deviled eggs']; The 'receiver' is _______; the 'selector' is _________
disclosure triangle
Classes
'Software Development Kit'
graduationParty ... addAttendee:withDish

32. Scaling - rotation - and translation are the most commonly used manipulations supported by _____ transforms - but skewing is also possible.
affine
Objective-C
superclass
UIImage *wp1 = [UIImage imageNamed:@'wallPaper_01.png'];

33. Key sequence to open the Attributes Inspector
Option+Command+4
Nib (but a few call it 'zib' but that's not preferred)
IBAction
NSMutableString

34. Every iOS application implements a subclass of _________
Xcode
UIApplication
2
Scheme

35. Extension for implementation file
512MB
NSDate
m
image view

36. A tool in Xcode to help fix broken code
segue
NSDate
detail disclosure
debugger

37. Purpose of the 'Auto-enable Return Key' attribute for text fields
Disables the Return key on the keyboard unless the user has entered at least a single character of input into the field
view
Hold down the Option key and point to the other label. The distance will be shown
||

38. Allows you to easily track multiple versions of your project
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.
Snapshot feature
h
Group

39. What's the difference between Cocoa and Cocoa Touch?
Cocoa is the development framework used for most native Mac OS X applications; Cocoa Touch is customized for a touch interface
Command+0
Home button
retain - release - dealloc - autorelease

40. You have created some 'breadcrumbs' using NSLog to trace the path of your code - and the debug area is open - yet you see no information in the panel. What's the problem and what is the solution?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

41. Tests to see whether two values are not equal
casting
!=
viewDidLoad
%d

42. iOS functional building blocks
IBOutlet
int
Classes
NSArray

43. Shortcut for writing: x = x - 1;
segue
x--;
controller
h

44. _____ are methods that we can connect to events.
Model-View-Controller
image view
Actions
NSString *userName;

45. The Inspector you would use to control your layout in Interface Builder
instance variable
hash
Size Inspector
NSMutableString

46. Storage place for a piece of information specific to a class
Xcode
instance variable
First Responder
Program received signal: EXC_BAD_ACCESS

47. API
Application Programming Interface
bgImages = [[NSArray alloc] initWithObjects: wp1 - wp2 - wp3 - wp4 - wp5 - nil];
count++;
UIViewController

48. Used to test an app without needing an actual physical device
convenience
subclass
!
iOS Simulator

49. To zoom between an overview of the entire storyboard and the actual size view - ______ the storyboard background.
Double-click
#import 'myFile.h'
bool
prototyping

50. Key sequence to open the Project Navigator (left panel)
-
UITextView
ommand+Return
Command+1