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. What type of object does a web view expect as a parameter when loading a remote URL?
NSURLRequest
workspace
#import 'myFile.h'
retain - release - dealloc - autorelease

2. A fully transparent image has an _____ property value of _____
label
Treats the field as a password - hiding each character as it is typed
switch
alpha ... 0

3. Key sequence to hide/show Navigator View
Cocoa Touch
view
stub
Command+0

4. Boolean for 'false' in Objective-C
Right-click on it in the Navigator panel and choose 'Open as...' and select 'Source Code'
image view
Cocoa Touch
NO

5. Denotes a class method
do{/*stuff to do here*/}while(<boolean expression>);
hash
+
NSMutableArray

6. Define a collection of methods to perform a task
retain - release - dealloc - autorelease
affine
protocols
debugger

7. strong and nonatomic are examples of ...
'Interface Builder'
attributes
NSArray
scene

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

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

9. Files used to create a class
UIImageView
segmented control
Attribute settings for some onscreen controls (like text areas) that analyze content and provide helpful links based on what they find. For example - phone numbers can be touched to dial the phone; web addresses can launch Safari if tapped - etc
interface and implementation files

10. Size of iPhone 'lo-res' icon image in pixels
Classes
debugger
57 x 57
Option+Command+4

11. Used to set up an outgoing connection from the implementation code to the view
Object library
IBOutlet
NSURL
alpha ... 1

12. An integrated web browser component
instantiation
web view
@
nonatomic

13. Extension for an iPhone/iPad app
convenience
Seques .... relationships
Treats the field as a password - hiding each character as it is typed
xcodeproj

14. Key sequence to open the Project Navigator (left panel)
XML
onscreen 'widgets' a user can interact with
UIImage *wp1 = [UIImage imageNamed:@'wallPaper_01.png'];
Command+1

15. Apps written to assist users with special disabilities
accessible apps
double
UITextView
Actions

16. The Round Rect Button is found in this library
performance
Object Library
count++;
Command plus the navigator's position in the selector. For example - the project navigator shortcut is Command-1

17. Shortcut for writing: x = x - 1;
User Interface
nonatomic
x--;
NSLog

18. Purpose of 'Secure' attribute for text fields
NSString *userName;
Hold down the Option key and point to the other label. The distance will be shown
Treats the field as a password - hiding each character as it is typed
image view

19. 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?

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20. 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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21. Indicates a lack of any value at all
image view
utility
NSMutableArray
nil

22. Single line text field
320 x 480
UITextField
class
NeXSTEP

23. Key sequence to hide/show the Assistant Editor
YES
ption+Command+Return
'Software Development Kit'
contentSize

24. NS stands for...
@
NeXSTEP
main()
Attributes Inspector

25. Write a statement to declare and initialize a label object called 'myLabel'
UILabel *myLabel = [[UILabel alloc] initWithString:@'GO!'];
C
UILabel *myLabel = [[UILabel alloc] init];
First Responder

26. A class that manages the user's interaction with the iDevice
image view
Command plus the navigator's position in the selector. For example - the project navigator shortcut is Command-1
NSString
view controller

27. Extension for MainStoryboard
do not
storyboard
#import <UIKIT/UIKIT.h>
bool

28. The '@' symbol is shorthand for creating one of these
NSString
[[<class name> alloc] init];
nested message send
header

29. RAM for iPhone
57 x 57
stub
512MB
viewDidLoad

30. An _______ is used to 'advertise' a method in your code that should be called when a certain event takes place
NeXSTEP
immersive
IBAction
First Responder

31. Syntax for block-comment
UIPicker
/*blah blah blah */
main()
The Console area of the Debug area

32. Used to indicate any type of object
Group
id
contentSize
@

33. What event do you use to detect a button tap?
Application Programming Interface
Identity Inspector
Touch Up Inside
immersive

34. Although it is possible to declare an instance variable and then define a corresponding property - you may also use @property alone to...
512MB
segue
implicitly declare a matching instance variable
strong

35. Scaling - rotation - and translation are the most commonly used manipulations supported by _____ transforms - but skewing is also possible.
token
Nib (but a few call it 'zib' but that's not preferred)
Size Inspector
affine

36. 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?
alpha
IBAction
myImage@2x.png
NSString *userName;

37. Templates fill in a bunch of ______-_______ code that serves as a framework in which to write future implementations
above
Command plus the navigator's position in the selector. For example - the project navigator shortcut is Command-1
NeXSTEP
boiler-plate

38. Class that builds upon another class
:
control-dragging
onscreen 'widgets' a user can interact with
subclass

39. The Inspector you will need if you want to connect a custom class to an object in Interface Builder
Identity Inspector
Commmand-R
Seques .... relationships
@

40. Postcondition repetition structure syntax
do{/*stuff to do here*/}while(<boolean expression>);
C
/*blah blah blah */
Control-click on the View Controller's icon to bring up a Connections dialog

41. Class that another class inherits from
Actions
superclass
Seques .... relationships
[myLabel setText:@'Howdy'];

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

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43. Class used for creating image views
UIImageView
'Software Development Kit'
320 x 480
//blah blah blah

44. Data type for numbers with 'tame' numbers of decimal points
float
sending an object a message
self
onscreen 'widgets' a user can interact with

45. Syntax for reserving memory and initializing an object
//blah blah blah
Treats the field as a password - hiding each character as it is typed
[[<class name> alloc] init];
Option+Command+4

46. A transition between scenes - frequently with a visual transition effect applied
property list
segue
protocols
[shrinkButton setTitle:@'Grow' forState: UIControlStateNormal];

47. Defines the functional building blocks (classes) that make iOS devices perform certain actions
Cocoa Touch
NSObject
NSString
wrap

48. Dimensions of iPad (in points)
IBOutlet
x--;
114 x 114
1024 x 768

49. The bar across the top of the Editor area that shows you the item you are editing
Command plus the navigator's position in the selector. For example - the project navigator shortcut is Command-1
Jump Bar
interface and implementation files
First Responder

50. Class of strings that can be changed
+
NSMutableString
Command plus the navigator's position in the selector. For example - the project navigator shortcut is Command-1
nil