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. This Xcode utility allows you to check CPU usage - memory allocation and network/file access (among other things)
Treats the field as a password - hiding each character as it is typed
scene
Instruments
self

2. Class used for image manipulations such as scaling - rotation and translation. Its data structure represents a matrix used for affine transformations.
320 x 480
||
CGAffineTransform
Instruments

3. Synonym for interface file
Scheme
strong
@synthesize directive
header

4. Denotes an instance method
@end
UITextView
-
IBAction

5. The 'First Responder' in a scene is not an object it is considered a ________
Model-View-Controller
nested message send
model
proxy

6. Used to display image file resources and show simple animations
UILabel *myLabel = [[UILabel alloc] init];
!=
x--;
image view

7. Alternative selection mechanism when many conditions exist
Option+Command+4
switch
header
NSDate

8. Framework used to write iPhone apps
UILabel *myLabel = [[UILabel alloc] init];
NO
Cocoa Touch
NSMutableString

9. Attribute that informs Xcode not to worry about different parts of the application using a property at the same time
nonatomic
alpha
import
Outlets ... pointer

10. Storage location for a piece of information
variable
com.basicversity
NSString *phrase = @'Hello World';
above

11. Key sequence to hide/show the Assistant Editor
*
ption+Command+Return
instantiate
UIApplication

12. Consider: int x = 6;int y = 7;float quotient = (float) x/y;The statement that creates the variable 'quotient' is an example of ...
subclass
disclosure triangle
IBAction
casting

13. Defines what an object can do
nibfile
if(<boolean condition>){/* stuff to do*/} else{ /*stuff to do*/}
hash
class

14. Master class in iOS
Send the 'resignFirstResponder' message to the object that currently controls the keyboard (such as a text field)
int
NSObject
IBAction

15. Storage place for a piece of information specific to a class
storyboard
model
'Interface Builder'
instance variable

16. Which Apple project template creates a simple view/view controller application
Single View Application
strong
protocols
accessors

17. Shortcut for writing: x = x - 1;
x--;
XML
2
%1.2f

18. Closes an interface file
@end
void
Outlets ... pointer
instantiation

19. Used to receive an event in code and trigger something
[<object variable> <method name>: p1];
IBAction
IBOutlet
@synthesize

20. Crash statement likely when an NSString is assigned a value with an incorrect format
Program received signal: EXC_BAD_ACCESS
do{/*stuff to do here*/}while(<boolean expression>);
2
NSURL

21. Extension for interface file
h
NSURLRequest
First Responder
+

22. Data type for true/false type variables
YES
superclass
bool
variable

23. Language used to write iOS apps
UIImage *wp1 = [UIImage imageNamed:@'wallPaper_01.png'];
Control-click on the View Controller's icon to bring up a Connections dialog
eXtensible Markup Language
Objective-C

24. iPhone and iPad ____ support .png transparency
scene
do not
subclass
NSLog

25. Class that builds upon another class
subclass
320 x 480
'Software Development Kit'
First Responder

26. An example of a common collection data type
Xcode
alpha ... 1
instance variable
NSArray

27. 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

28. Data type for whole numbers
Command+S
int
IBAction)moveMe:(id)sender;
To provide a convenient way of setting the button's title in the code

29. API
graduationParty ... addAttendee:withDish
control-dragging
subclass
Application Programming Interface

30. A fully opaque image has an _______ property value of ______
xcodeproj
Model-View-Controller
alpha ... 1
modal views

31. Implements a logical OR condition
Integrated Development Environment
instantiate
||
mutators

32. Syntax for declaring a string called 'userName'
Cocoa Touch
NSString *userName;
Snapshot feature
Option+Command+4

33. This type of app typically involves hierarchical data
Command+1
protocols
productivity
114 x 114

34. Data type for highly precise numbers with huge numbers of decimal places
alpha ... 0
id
float
double

35. Syntax for sending an object a message with one parameter (p1)
Jump Bar
[<object variable> <method name>: p1];
Nib (but a few call it 'zib' but that's not preferred)
Seques .... relationships

36. 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
@2x
controller
Command plus the navigator's position in the selector. For example - the project navigator shortcut is Command-1

37. Apps written to assist users with special disabilities
Cocoa Touch
instance variable
accessible apps
Object Library

38. Given: [graduationParty addAttendee: @'Aunt Jane' withDish: @'deviled eggs']; The 'receiver' is _______; the 'selector' is _________
[shrinkButton setTitle:@'Grow' forState: UIControlStateNormal];
!
graduationParty ... addAttendee:withDish
First Responder

39. Piece of information provided to a method when it is messaged
nonatomic
@end
parameter
NSObject

40. A virtual 'box' for organizing related projects
affine
conform
attributes
workspace

41. Used to define a list of all methods and properties a class uses
web view
NSURL
interface file
control-dragging

42. ______ are variables that can store a ____ to an object.
UIWindow
Outlets ... pointer
Single View Application
NSURL

43. Scaling - rotation - and translation are the most commonly used manipulations supported by _____ transforms - but skewing is also possible.
implicitly declare a matching instance variable
NSArray
implementation file
affine

44. Document Apple uses to evaluate apps for the App Store
Model-View-Controller
320 x 480
Human Interface Guide
view

45. Shortcut for writing: y = y * 5;
nil
Xcode
y *= 5;
switch

46. Fixed iteration repetition control structure syntax
for(<initialization>;<test condition>;<update instruction>){/*do this over and over*/}
xcodeproj
alpha ... 0
<type> <variableName>;

47. Name of the '|' symbol
pipe
*
UIApplication
x--;

48. Name of the drop-down menu in Xcode that lets you select the device used with the iOS Simulator
Home button
viewDidLoad
Scheme
%1.2f

49. The bar across the top of the Editor area that shows you the item you are editing
class
Jump Bar
image view
NO

50. Extension for MainStoryboard
x--;
superclass
storyboard
==