Test your basic knowledge |

iOS 5 App Development Objective C

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. [Instance Variables] The code it gets from its class and in a sense is shared with all other instances of that class - but the _ belong to it alone.
the array becomes an owner of that object and has a pointer to it.
Object wrapper around primitive types like int - float - double - BOOl
data
super - self

2. In general - in Objective-C - a reference to an instance is a _ - and the name of the data type of what's at the far end of that pointer is the name of the instances's _.
pointer - class
data source - view controller and delegate
message
Generic object wrapper for other non-object data types

3. Object Oriented based analogue to a function is called a...
data
method
Used to find the time right now or to store past or future time/dates
class methods - initializers

4. class methods...
super - self
storage
group of global functions already assigned to this class
the instance variables

5. Only exists within the statement block there defined - outside of the block is fine
C Functionn
variable scope - if defined within a block
class methods - initializers
message

6. Center and frame are used to _ your view
data source - view controller and delegate
ready-made instances - instantiation from scratch - and nib based instantiation
position
@synthesize

7. When making a tableView always...
has one root view controller
view
reuse your cells
CGRect bounds

8. A view represents a _ area
variable scope - if defined within a block
creating an initializer
rectangular
NSLog routine

9. Inside a method - _ is an implicit local variable. Typically - _ is used so that an object can send a message to itself....
self
CGRect
Is a placeholder object
Maintenance of state

10. How do I implement my drawRect?
C Functionn
class's
viewWillDissapear: and viewWillAppear:
Core Graphics Framework

11. Designated initializer makes sure that every...
references to objects
the message release to all its entries
instance variable of an object is valid
'getters' and 'setters'

12. When an object is removed from an NSMutableArray - that object is sent the message release;...
define it in the implemenation file
do so in viewDidLoad
dealloc - is called on the object & the object's memory is returned to the heap
the array relinquishes ownership of that object and no longer has a pointer to it

13. NSString* s2 = [s uppercase String]; Is an example of what kind of instance?
designated initializer
in the dealloc - or when a Controller's view is 'unloaded'
Ready-Made Instance
methods for generating an instance

14. Variable names tend to start with a _ letter; class names tend to start with an _ letter.
lowercase - uppercase
Continue
arguments[message]
only the class and subclasses can access

15. Files Owner...
Continue
Is a placeholder object
a single-array can contain objects of different types
receiver

16. All objects are accessed using...
Ready-Made Instance
protocol
pointers
safety - subclassability and makes code look more consistent with C structs

17. NSDictionary...
you always return the newly initialized object(return self)
Object wrapper around primitive types like int - float - double - BOOl
safety - subclassability and makes code look more consistent with C structs
Hash table - Look up objects using a key to get a value.

18. When you send a message to _ - you are sending a message to _ - but demanding that the search for the method begin at the superclass....
to get and set variables
CGRect bounds - GCPoint center - CGRect frame
super - self
array[class - NSMutableArray]

19. @property - is using methods...
Model Objects[Factory Worker]
to give it someone else - or another object
to get and set variables
Is a placeholder object

20. @property declares - and _ implements the setter and getter...
to give it someone else - or another object
nil
object
@synthesize

21. Views have three properties related to their location and size: @property _ _;
class's
copy - retain
method
CGRect bounds - GCPoint center - CGRect frame

22. Proceed through the loop - jump back to the top and check again
Continue
alloc - singleton - informational utility method?
variable scope - if defined within a block
method

23. initWithFrame: the designated initializer for UIView gives the view
the array relinquishes ownership of that object and no longer has a pointer to it
size and position
view controller's initialization method
Core Graphics Framework

24. Instance Variables by default are called @protected meaning...
You take ownership for an object you want to keep a pointer to
selector[message]
safety - subclassability and makes code look more consistent with C structs
only the class and subclasses can access

25. NSDate - class...
initializers
method
CGRect bounds - GCPoint center - CGRect frame
Used to find the time right now or to store past or future time/dates

26. Primitives and C Structures...
cannot be added to an array
receiver - selector - arguments
Ready-Made Instance
only the innermost loop in which the break is executed is terminated

27. Three ways instances are created...
receiver
ready-made instances - instantiation from scratch - and nib based instantiation
selector[message]
view controller

28. UIImageView is used to...
variable scope - if defined within a block
values
receiver
draw images

29. In any application with UINavigationController - the navigation controller...
causes the program to immediately exit from the loop it is executing - whether its for - while or do
subview(s)
has one root view controller
Model Objects[Factory Worker]

30. Class methods typically either create
new instances of the class or retrieve some global property of the class.
viewWillDissapear: and viewWillAppear:
Used to find the time right now or to store past or future time/dates
is an instance of that class

31. If you have extra work you want to do on the view...
do so in viewDidLoad
safety - subclassability and makes code look more consistent with C structs
references to objects
delegates and dataSources

32. When do we need to release our outlets?

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

33. The only reason to temporarily own an object - is...
to give it someone else - or another object
Model Objects[Factory Worker]
reuse your cells
position

34. A class inherits all _ from its superclass and can add as many as it wants for its own purposes....
CF - Ref
Model Objects[Factory Worker]
initializers
self

35. if you implemented both the setter and getter - the @synthesize method...
define it in the implemenation file
cannot be added to an array
will be ignored
Functions

36. A UITableViewController can fill all three roles of...
rectangular
Generic object wrapper for other non-object data types
protocol
data source - view controller and delegate

37. Objective C only allows for single inheritance - so in regards to class you only ever see the following pattern
copy - retain
@interface ClassName:SuperClassName
has one root view controller
delegates and dataSources

38. Core foundation classes are prefixed with _ and suffixed with _
initializers
CF - Ref
instance variable of an object is valid
accessors - individually we call them 'getters' and 'setters'

39. In object oriented languages - we call methods that get and set instance variables

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

40. Defining variables - three parts...
@synthesize
instance of UIView or one of its subclasses
Generic object wrapper for other non-object data types
type - name and value

41. A function in the objective c library that simply displays or logs it's argument
copy - retain
NSLog routine
nil
'getters' and 'setters'

42. If you aren't going to initialize an instance reference pointer at the moment you declare it by assigning a real value - it's a good idea to assign it _.
Ready-Made Instance
they need to be defined in the implementation file
nil
UIView

43. Whenever a UINavigationController is about to swap views - it sends out two messages
is an instance of that class
instance variables
viewWillDissapear: and viewWillAppear:
C Functionn

44. A view is a subclass of _
is called every time the event occurs
storage
size and position
UIView

45. SomeClass* aVariable = [[SomeClass alloc] init]; is an example of what kind of instance?
an object's property
NSBundle
data source - view controller and delegate
Instantiation from scratch

46. UITableViewController is a subclass of...
Maintenance of state
NSBundle
UIViewController
subview(s)

47. Just a floating point number - but we always use it for graphics.
C Functionn
type - name and value
CGFloat
instance

48. Each _ has a 'designated' initializer method....
the message release to all its entries
define it in the implemenation file
parentViewController
class

49. Typically the designated initializer has parameters for the most important and frequently used _ of an object
view
instance variables
dealloc - is called on the object & the object's memory is returned to the heap
(id)initWithFrame:(CGRect)aRect;

50. Delegation is an object oriented approach to
you always return the newly initialized object(return self)
only the class and subclasses can access
callbacks
an object's property

Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?

Major Subjects
Tests & Exams AP CLEP DSST GRE SAT GMAT	Certifications CISSP go to https://www.isc2.org/ PMP ITIL RHCE MCTS More...	IT Skills Android Programming Data Modeling Objective C Programming Basic Python Programming Adobe Illustrator More...	Business Skills Advertising Techniques Business Accounting Basics Business Strategy Human Resource Management Marketing Basics More...
Soft Skills Body Language People Skills Public Speaking Persuasion Job Hunting And Resumes More...	Vocabulary GRE Vocab SAT Vocab TOEFL Essential Vocab Basic English Words For All Global Words You Should Know Business English More...	Languages AP German Vocab AP Latin Vocab SAT Subject Test: French Italian Survival Norwegian Survival More...	Engineering Audio Engineering Computer Science Engineering Aerospace Engineering Chemical Engineering Structural Engineering More...
Health Sciences Basic Nursing Skills Health Science Language Fundamentals Veterinary Technology Medical Language Cardiology Clinical Surgery More...	English Grammar Fundamentals Literary And Rhetorical Vocab Elements Of Style Vocab Introduction To English Major Complete Advanced Sentences Literature Homonyms More...	Math Algebra Formulas Basic Arithmetic: Measurements Metric Conversions Geometric Properties Important Math Facts Number Sense Vocab Business Math More...	Other Major Subjects Science Economics History Law Performing-arts Cooking Logic & Reasoning Trivia

Test your basic knowledge |

iOS 5 App Development Objective C

Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?

Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests

Major Subjects

Tests & Exams

Certifications

IT Skills

Business Skills

Soft Skills

Vocabulary

Languages

Engineering

Health Sciences

English

Math

Other Major Subjects

Browse all subjects

Browse all tests

Most popular tests