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. You are creating an app for a company whose URL is http://www.basicversity.com . What should be the company identifier for the app when you begin the project?
storyboards
com.basicversity
convenience
xcodeproj

2. A transition between scenes - frequently with a visual transition effect applied
segue
Isolate the functional components of an app
First Responder
NSDictionary

3. Delimiter for a list of protocols
switch
count++;
<>
ption+Command+Return

4. Symbol often denoting a 'pointer'
y *= 5;
/*blah blah blah */
@2x
*

5. 'plist' stands for...
property list
y *= 5;
Send the 'resignFirstResponder' message to the object that currently controls the keyboard (such as a text field)
disclosure

6. Class used to work with dates as objects
NSDate
Cocoa Touch
Object Library
The Console area of the Debug area

7. To use a new class you need to _____ it
instantiate
Object Library
static
interface and implementation files

8. The Utilities area has two sections: ______ and ______
inspector and library
bool
implicitly declare a matching instance variable
affine

9. An _______ is used to enable your code to talk to objects within views
[<object variable> <method name>];
Commmand-R
Xcode
IBOutlet

10. This Xcode utility allows you to check CPU usage - memory allocation and network/file access (among other things)
workspace
Instruments
Integrated Development Environment
nonatomic

11. Attribute that informs Xcode not to worry about different parts of the application using a property at the same time
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
nonatomic
NSString *userName;
image view

12. IB

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13. A class that manages the user's interaction with the iDevice
view controller
IBOutlet
wrap
@end

14. Expression to create a random number in [0 -20];
-
rand( )%21
@synthesize directive
@

15. Syntax for sending an object a message with one parameter (p1)
Collections
segue
[<object variable> <method name>: p1];
self

16. Modulus (remainder) operator
114 x 114
%
Command + Tab
UITextView

17. XML
pound
Object-oriented programming
strong
eXtensible Markup Language

18. Connections between Objects in the Interface Builder and the header file are formed by _____-_______ from the object to the proper place in the header file
Application Programming Interface
control-dragging
wrap
NSDictionary

19. A common button type that indicates additional information is available
detail disclosure
storyboard
alpha ... 0
NSArray

20. The '@' symbol is shorthand for creating one of these
NSURLRequest
token
IBAction
NSString

21. Key sequence to hide/show Navigator View
modal views
Command+0
!
Human Interface Guide

22. In a stepper control - when this attribute option is checked - the stepper's value is automatically set to the minimum value when the maximum value is exceeded (or vice versa).
<>
wrap
Jump Bar
affine

23. Opens the Xcode Quick Help Assistant
debugger
Option-click a symbol
strong
:

24. MVC
Application Programming Interface
Model-View-Controller
view controller
Utility apps

25. What type of object does a web view expect as a parameter when loading a remote URL?
alpha
Classes
NSURLRequest
attributes

26. iPhone and iPad ____ support .png transparency
Gray circle with a white 'X' in it - positioned to the right of the text field box
do not
hasShrunk==YES && hasMoved == YES
UILabel *myLabel = [[UILabel alloc] initWithString:@'GO!'];

27. An array of background images called 'bgImages' has been declared as an instance variable in your header file. You have created a set of 5 background images stored in UIImage variables wp1 through wp5. Write a line of code that initializes the array.
onscreen 'widgets' a user can interact with
2
IBAction
bgImages = [[NSArray alloc] initWithObjects: wp1 - wp2 - wp3 - wp4 - wp5 - nil];

28. 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

29. Return type indicating a method returns nothing
disclosure
CGAffineTransform
void
Identity Inspector

30. Formatting placeholder for strings
viewDidLoad
alpha
%@
Isolate the functional components of an app

31. Every iOS application implements a subclass of _________
retain - release - dealloc - autorelease
UIApplication
IBAction
Object Library

32. Name of the '|' symbol
pipe
import
hasShrunk==YES && hasMoved == YES
==

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

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34. Class of collection data type which stores information as object/key pairs
NSDictionary
Touch Up Inside
UIPicker
'Software Development Kit'

35. Objective-C is an extension (super set) of...
C
Single View Application
interface file
storyboard

36. Framework used to write iPhone apps
Snapshot feature
#import <UIKIT/UIKIT.h>
Cocoa Touch
Double-click

37. Process of creating an active object from a class
[myLabel setText:@'Howdy'];
instantiation
Right-click on it in the Navigator panel and choose 'Open as...' and select 'Source Code'
UIWindow

38. Indicates a lack of any value at all
Identity Inspector
nil
main()
affine

39. The files that contain all the scenes you will use in a project.
Program received signal: EXC_BAD_ACCESS
storyboards
protocols
Double-click

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

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41. 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.
utility
viewDidLoad
storyboard
detail disclosure

42. Word used to indicate that a user can't interact with a given element
accessors
static
bool
*

43. The Round Rect Button is found in this library
while(<boolean expression>){/*stuff to do here*/}
xcodeproj
Object Library
instantiation

44. strong and nonatomic are examples of ...
==
attributes
512MB
Instruments

45. Extension for interface file
view
nil
@synthesize
h

46. Used to define a list of all methods and properties a class uses
57 x 57
interface file
To provide a convenient way of setting the button's title in the code
NSString

47. Directive to include other interface files that an application might need to access
nonatomic
import
pound
*

48. What do the Autosizing settings of the Size Inspector do?
Determine how controls resize/reposition themselves when a device changes orientation
Human Interface Guide
controller
@synthesize directive

49. Dimensions of iPhone (in points)
320 x 480
NSString
nil
Command+0

50. Size of iPhone retina icon image in pixels
segue
IBAction
114 x 114
accessors