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. Defines what an object can do
Objective-C
User Interface
class
Snapshot feature

2. The ________ class provided a container for the management and display of views
UIWindow
int
*
NSString *phrase = @'Hello World';

3. A unique combination of view controller and view
do{/*stuff to do here*/}while(<boolean expression>);
pound
Isolate the functional components of an app
scene

4. Fixed iteration repetition control structure syntax
||
accessors
for(<initialization>;<test condition>;<update instruction>){/*do this over and over*/}
graduationParty ... addAttendee:withDish

5. Given: [graduationParty addAttendee: @'Aunt Jane' withDish: @'deviled eggs']; The 'receiver' is _______; the 'selector' is _________
pound
class
graduationParty ... addAttendee:withDish
wrap

6. What property needs to be set before a scroll view (UIScrollView) will scroll?
Utility apps
contentSize
Object Library
@2x

7. What do the Autosizing settings of the Size Inspector do?
Determine how controls resize/reposition themselves when a device changes orientation
Cocoa Touch - Media - Core Services - Core OS
convenience
Send the 'resignFirstResponder' message to the object that currently controls the keyboard (such as a text field)

8. Which Apple project template creates a simple view/view controller application
label
protocols
Single View Application
Xcode

9. Key sequence on a Mac to select between open application
#import <UIKIT/UIKIT.h>
viewDidLoad
%1.2f
Command + Tab

10. These define to which messages the datasource and delegate respond
#import 'myFile.h'
Determine how controls resize/reposition themselves when a device changes orientation
protocols
'Interface Builder'

11. Alternative selection mechanism when many conditions exist
switch
Objective-C
@
/*blah blah blah */

12. If you wish to 'echo print' breadcrumb info as you develop your app - this panel must be visible
The Console area of the Debug area
m
Nib (but a few call it 'zib' but that's not preferred)
segmented control

13. What computer language is the storyboard written in?
%@
NSArray
pound
XML

14. Syntax for sending an object a message with no parameters
static
switch
[<object variable> <method name>];
header

15. A common button type that indicates additional information is available
NSMutableString
retain - release - dealloc - autorelease
detail disclosure
parameter

16. Key sequence to hide/show Navigator View
[[<class name> alloc] init];
Hold down the Option key and point to the other label. The distance will be shown
Cocoa Touch
Command+0

17. This element should 'always' accompany a slider to indicate its purpose
if(<boolean condition>){/* stuff to do*/} else{ /*stuff to do*/}
label
UITextView
XML

18. This file contains the scene - segue and relationship definitions for your project
storyboard
IBAction)moveMe:(id)sender;
Right-click on it in the Navigator panel and choose 'Open as...' and select 'Source Code'
implicitly declare a matching instance variable

19. Apps written to assist users with special disabilities
nested message send
Command+0
UIApplication
accessible apps

20. Formatting placeholder for a floating point value with one digit on the left of the decimal and two digits on the right
alpha ... 0
%1.2f
eXtensible Markup Language
UILabel *myLabel = [[UILabel alloc] initWithString:@'GO!'];

21. Return type indicating a method returns nothing
2
#import 'myFile.h'
interface and implementation files
void

22. The Utilities area has two sections: ______ and ______
implicitly declare a matching instance variable
IBAction
Identity Inspector
inspector and library

23. IDE
stub
nested message send
Integrated Development Environment
UIPicker

24. Beginning with iOS4 - applications no longer terminate when the user presses the...
UILabel *myLabel = [[UILabel alloc] init];
UIPicker
Home button
static

25. _____ are methods that we can connect to events.
Collections
@synthesize
casting
Actions

26. Proper way to pronounce a *.xib file

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

28. Formatting placeholder for integers
%d
114 x 114
@
implicitly declare a matching instance variable

29. @synthesize directives should be placed _____ (above or below) the @implementation directive in the implementation file
below
com.basicversity
segue
import

30. 'plist' stands for...
UIImageView
NSDate
property list
onscreen 'widgets' a user can interact with

31. Class used for image manipulations such as scaling - rotation and translation. Its data structure represents a matrix used for affine transformations.
IBOutlet
conform
myImage@2x.png
CGAffineTransform

32. Piece of information provided to a method when it is messaged
[<object variable> <method name>];
parameter
CGAffineTransform
Object library

33. Used to test an app without needing an actual physical device
iOS Simulator
Group
==
label.text=@'Hello World!';

34. Any 'directive' statement begins with this symbol
Collections
nonatomic
@
parameter

35. Write a statement to declare and initialize a label object called 'myLabel'
disclosure
Cocoa Touch
UILabel *myLabel = [[UILabel alloc] init];
'Software Development Kit'

36. Syntax for block-comment
/*blah blah blah */
Control-click on the View Controller's icon to bring up a Connections dialog
attributes
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

37. Boolean for 'true' in Objective-C
YES
IBAction
To provide a convenient way of setting the button's title in the code
First Responder

38. A class that implements a protocol is said to ____ to that protocol
conform
void
sending an object a message
static

39. Allows you to easily track multiple versions of your project
Snapshot feature
y *= 5;
Send the 'resignFirstResponder' message to the object that currently controls the keyboard (such as a text field)
Option+Command+ 0

40. Files used to create a class
To provide a convenient way of setting the button's title in the code
static
interface and implementation files
alpha

41. To unroll or roll up a hierarchy of files - objects or classes - you click the ______ _______ at the root element
NSString *userName;
disclosure triangle
token
if(<boolean condition>){/* stuff to do*/} else{ /*stuff to do*/}

42. Class that creates an array capable of being changed after it is create
NSMutableArray
sending an object a message
Collections
@

43. SDK

44. Apps that provide easy access to a single screen of information with a backside view for modifying preferences
Utility apps
Collections
UITextField
storyboard

45. Implements a logical AND condition
&&
Control-click on the View Controller's icon to bring up a Connections dialog
320 x 480
NSString *userName;

46. 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

47. NS stands for...
Nib (but a few call it 'zib' but that's not preferred)
disclosure triangle
retain - release - dealloc - autorelease
NeXSTEP

48. Character used to show an element as a literal string
Isolate the functional components of an app
storyboards
@
NSDictionary

49. A view has a 'Shrink' button whose label needs to change once it is clicked to 'Grow'. Write a 'message' type command to change it's label to 'Grow'

50. Although it is possible to declare an instance variable and then define a corresponding property - you may also use @property alone to...
alpha
Collections
implicitly declare a matching instance variable
import