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. NSString* s2 = [s uppercase String]; Is an example of what kind of instance?
references to objects
CF - Ref
causes the program to immediately exit from the loop it is executing - whether its for - while or do
Ready-Made Instance

2. NSArray - class...
accessors - individually we call them 'getters' and 'setters'
parentViewController
@interface ClassName:SuperClassName
ordered collection of objects - immutable

3. Each individual instance is a bundle of data that it maintains. Typically that data is private - which means that it's encapsulated as well; no other object knows what that data is or in what form it is kept. The only way to discover from outside wha
the array becomes an owner of that object and has a pointer to it.
Maintenance of state
Is a placeholder object
Hash table - Look up objects using a key to get a value.

4. In a class method you cannot access...
the instance variables
Generic object wrapper for other non-object data types
view controller's initialization method
cannot be added to an array

5. NSValue - class...
Generic object wrapper for other non-object data types
a mechanism to enable specific callbacks
super - self
Anytime you call a method with new - alloc or copy. You own and must release that object.

6. A UITableViewController can fill all three roles of...
lowercase - uppercase
data source - view controller and delegate
CGFloat
causes the program to immediately exit from the loop it is executing - whether its for - while or do

7. Execution of the break statement...
causes the program to immediately exit from the loop it is executing - whether its for - while or do
Used to find the time right now or to store past or future time/dates
instance variable of an object is valid
class

8. The only reason to temporarily own an object - is...
draw images
do so in viewDidLoad
only the class and subclasses can access
to give it someone else - or another object

9. Why properties?
Used to find the time right now or to store past or future time/dates
Core Graphics Framework
safety - subclassability and makes code look more consistent with C structs
parentViewController

10. Prefixing a character string with an @ symbol [specific - NSString class]...
@synthesize
creates an instance of NSString that holds the character string
you must import the header file of that class
class's

11. NSString *s = @'Hello - World'; is an example of...
declaration and initialization of a variable
C Functionn
dealloc - is called on the object & the object's memory is returned to the heap
pointers

12. The object to which a message is sent - the receiver can be referred to as self from inside the method that is invoked
is an instance of that class
Encapsulation of functionality
you always return the newly initialized object(return self)
receiver

13. In Objective C - the name of a setter method is set plus the name of the instance variable it is changing - for example PossessionName would be...
pointer - class
unordered collection of objects - objects must be unique
setPossessionName
the instance variables

14. Order of the declarations for methods. _ come first - followed by _ - followed by any other methods...
designated initializer
class methods - initializers
cannot be added to an array
Ready-Made Instance

15. Files Owner...
You take ownership for an object you want to keep a pointer to
Is a placeholder object
attributes - behavior
Continue

16. When do you take ownership?...
instance variables
array[class - NSMutableArray]
%d
Anytime you call a method with new - alloc or copy. You own and must release that object.

17. Whenever a UINavigationController is about to swap views - it sends out two messages
in the dealloc - or when a Controller's view is 'unloaded'
viewWillDissapear: and viewWillAppear:
storage
designated initializer

18. Archiving works by creating an instance of _ - which is essentially just a container for data - and placing objects and their data inside it.
NSCoder
setPossessionName
Data Encapsulation
NSBundle

19. Proceed through the loop - jump back to the top and check again
for inheritance - adopting the superclasses implementation
Continue
receiving and handling events that are associated with it
Ready-Made Instance

20. NSArray - important methods...
dealloc - is called on the object & the object's memory is returned to the heap
alloc - singleton - informational utility method?
count - objectAtIndex - makeObjectsPerformSelector - sortedArrayUsingSelector - lastObject
instance variables

21. Primitives and C Structures...
(id)initWithFrame:(CGRect)aRect;
the instance variables
cannot be added to an array
size and position

22. NSNumber - class...
view controller
causes the program to immediately exit from the loop it is executing - whether its for - while or do
Object wrapper around primitive types like int - float - double - BOOl
collection of collections - NSArray of an NSArray

23. @property declares - and _ implements the setter and getter...
initializer
the instance variables
@synthesize
super - self

24. A UITableView usually needs three different pieces...
ordered collection of objects - immutable
data source - delegate and view controller
NSBundle
rectangular

25. Use of class methods - there are three...
alloc - singleton - informational utility method?
causes the program to immediately exit from the loop it is executing - whether its for - while or do
cannot be added to an array
draw images

26. When the message endEditing: is sent to a view - if it or any of its subviews or currently the _ - it will resign its first responder statues - and the keyboard will be dismissed.
the array relinquishes ownership of that object and no longer has a pointer to it
accessors - individually we call them 'getters' and 'setters'
first responder
position

27. SomeClass* aVariable = [[SomeClass alloc] init]; is an example of what kind of instance?
Instantiation from scratch
causes the program to immediately exit from the loop it is executing - whether its for - while or do
array[class - NSMutableArray]
You take ownership for an object you want to keep a pointer to

28. A block of statements identified by a name that can accept one or more arguments passed to it by value and can optionally return a value
Functions
receiver
you must import the header file of that class
delegates and dataSources

29. In Cocoa Touch - the table view asks another object _ what it should display...
class's
only the class and subclasses can access
declaration and initialization of a variable
its dataSource

30. When overriding a method - all you need to is _ - you do not need to declare it in the header file because it has already been declared by the superclass....
view controller's initialization method
define it in the implemenation file
unordered collection of objects - objects must be unique
instance variables

31. When an NSMutableArray is deallocated - it sends...
pointer - class
Controller Objects[Managers]
the message release to all its entries
method

32. Designated initializer makes sure that every...
data source - view controller and delegate
accessors - individually we call them 'getters' and 'setters'
will be ignored
instance variable of an object is valid

33. 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 _.
viewWillAppear - viewDidAppear - viewWillDisappear & viewDidDisappear
data source - view controller and delegate
protocol
pointer - class

34. If a class declares a _ that is different from its superclass - you must override the superclass' _ to call the new _...
designated initializer
instance variables
class methods - initializers
safety - subclassability and makes code look more consistent with C structs

35. A command directed to an object is called an...
message
self
the message release to all its entries
viewWillAppear - viewDidAppear - viewWillDisappear & viewDidDisappear

36. It's class is sent the message alloc - which creates an instance of that class and returns a pointer to it - and then that instance is sent the message init - which gives its instance variables initial values.
creating an initializer
Maintenance of state
instance variables
selector[message]

37. id is a...
NSBundle
pointer to an object
viewWillAppear - viewDidAppear - viewWillDisappear & viewDidDisappear
do so in viewDidLoad

38. Objective C only allows for single inheritance - so in regards to class you only ever see the following pattern
@interface ClassName:SuperClassName
delegates and dataSources
view controller's initialization method
Model Objects[Factory Worker]

39. To load a Xib file manually - you use _
cannot be added to an array
NSBundle
Is a placeholder object
upper

40. UIView - designated initializer...
arguments[message]
Continue
Maintenance of state
(id)initWithFrame:(CGRect)aRect;

41. A view is an...
UIViewController
view controller
instance of UIView or one of its subclasses
a mechanism to enable specific callbacks

42. class methods...
group of global functions already assigned to this class
ready-made instances - instantiation from scratch - and nib based instantiation
parentViewController
class

43. In any application with UINavigationController - the navigation controller...
has one root view controller
group of global functions already assigned to this class
CF - Ref
superclass's

44. A view is a subclass of _
UIView
instance
receiving and handling events that are associated with it
pointers

45. if you implemented both the setter and getter - the @synthesize method...
type - name and value
will be ignored
for inheritance - adopting the superclasses implementation
the message release to all its entries

46. At the top of any implementation file...
upper
its dataSource
nil
you must import the header file of that class

47. Any other initializer a class has calls the _ designated initializer....

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

48. Typically the designated initializer has parameters for the most important and frequently used _ of an object
instance variables
Functions
subview(s)
safety - subclassability and makes code look more consistent with C structs

49. 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

50. When an object is added to a NSMutableArray - that object is sent the message to retain;...
Ready-Made Instance
UIView
the array becomes an owner of that object and has a pointer to it.
define it in the implemenation file

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