odesk ios6 test answers

odesk ios6 test answers

1)   Which of the following AVAudioSession class categories can be used to generate generic audio output?

                        a.AVAudioSessionCategoryAmbient

                        b.AVAudioSessionCategoryPlayAndRecord

                        c.AVAudioSessionCategoryAudioProcessing

                        d.AVAudioSessionCategoryMultiRoute

2)   Consider the following code:

@interface message:NSObject

-(void)print;

@end

@implementation message

-(void)print

{

NSLog(@"Get A message");

}

@end

int main(int c,char *v[])

{

   @autoreleasepool

   {

      message *m=nil;

      [m print];

   }

return 0;

}

What will happen when you compile and run this code?

a.There will be a compile time error.

b.There will be a runtime error.

c.It will print: Get A message.

d.The code will run, but there will be no output.

3)   In order to make sure that a WebView is allowed to draw on screen only when the request is fully loaded, you use:

a.renderOnComplete

            b.drawOnComplete

            c.suppRessesIncRementalRendeRing

            d.waitForDraw

            e.dataDetectorTypes

4)   Which protocol is used for downloading data in iOS 6?

a.NSURLConnectionDelegate

b.NSURLConnectionDownloadDelegate

c.NSURLDownloadDelegate

d.NSDownloaderDelegate

5)   Which of the following resolutions does iOS support?

a.240 x 320

      b.320 x 480

      c.568 x 320

      d.1024 x 768

6)    Consider the following code:

#import

@interface message:NSObject

-(void)print;

-(NSString *) getdata;

@end

@implementation message

-(void)print

{

  NSLog(@"Get A message");

}

-(NSString *) getdata

{

  return @"hello";

}

-(int) getdata

{

  return 1;

}

@end

int main(int c,char *v[])

  {

     @autoreleasepool

     {

        message *m=[message new];

        id data =[m performSelector:@selector(getdata)];

        NSLog(@"%@", data);

     }

     return 0;

  }

What will be the output of this code?

a.There will be a compile time error.

        b.There will be a runtime error.

        c.It will print: Get A message hello.

        d.The code will run, but there will be no output.

7)   Is it possible to detect events performed by a user (such as clicking a link, form submission, reloading, etc.) in a WebView?

a.Yes

b.No

8)   Can custom header views be created through nib files?

a.Yes

      b.No

9)    Which of the following frameworks has vDSP functions?

a.MathLib

b.OpenGLES

c.GLKit

d.Accelerate

10)  What is the correct syntax for printing enumeration LLDB for the following enumeration?

enum TestEnum{TestEnumName,TestEnumSex,TestEnumAge}

a.print TestEnumName

        b.print TestEnum::TestEnumName

        c.ExprEssion TEstEnum::TEstEnumNamE (Not Sure)

        d.print_r (TestEnum->TestEnumName)

11) Which of the following protocols are new to the AVFoundation Framework?

a.AVPlayerItemOutPutPullDelegate (not sure)

        b.AVCaptureMetadataOutputObjectsDelegate (sure)

        c.AVAssetResourceLoaderDelegate(not sure)

        d.AVAudioSessionDataSourceDescription

12)   Which of the following methods moves a specified subview to the background?

a.pushSubviewToBack

      b.sendSubviewToBack

      c.removeFromFront

      d.None of the above

13)   What will happen if you run an application designed for iPhone 4S on an iPhone 5, i.e., on iOS 6?

a.The application will work fine.

b.The application will crash.

c.The application will work fine, but there will be a small black area at the bottom (in the portrait orientation) of the application.

d.The application will work properly, but only in the landscape orientation.

14) Which of the following classes have been added to the Foundation framework in iOS 6?

a.NSAttributedString

        b.NSFrame

        c.NSMutableAttributedString

15) Which of the following methods should be overridden when iOS 6 receives a memory warning?

a.viewDidUnload

        b.didReceiveMemoryWarning

        c.viewWillUnload

        d.All of the above are called when a memory warning is received and iOS manages the memory issue by unloading the views.

16) Does AVPlayer support streaming video from a URL?

a.Yes

        b.No

17) Which of the following is used when ARC is disabled?

a.autoreleasepool{}

        b.NSAutoreleasePool (not sure)

        c.@autoreleasepool{} (not sure)

        d._autoreleasing

        e.autorelease

18) Consider the following code:

#import

#import "AppDelegate.h"

int main(int argc, char *argv[])

  {

     @autoreleasepool

     {

     return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));

     }

  }

int UIApplicationMain(int argc, char *argv[], NSString *principalClassName, NSString *delegateClassName)

  {

     printf("hello testing testing");

     return 0;

  }

What will be the output of this code?

a.hello testing testing

b.The code will not compile because there are two definitions of the UIApplicationMain function, one in the main.m file and another in the UIKit framework.

c.The code will compile, but will generate an error during runtime on the simulator.

19) Which of the following methods has been added to the NSValue class in iOS 6?

            a.valueWithCGPoint

b.valueWithCGRect

c.valueWithUIEdgeInsets

d.valueWithMKCoordinate

20) What is the new assembly language for the LLVM compiler?

            a.Universal Assembly Language (UAL)

b.United Assembly Language (UAL)

c.Unified Assembly Language (UAL)

21) Which of the following helps a programmer create challenges and provide a leaderboard to the user?

            a.OpenGL ES

b.GLKit

c.Game Kit

d.GamingCenter

22) What is the default specifier for an instance variable?

            a.@public

b.@private

c.@protected

d.@package

23) Which of the following is NOT a DataSource method?

•   a.- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath

•   b.- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section

•   c.- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath

•   d.- (NSInteger)numberOfItemsInSection:(NSInteger)section

24) Which of the following devices are supported by Xcode 4.5 applications?

            a.iPhone 3GS, 3G, 4, 4S

b.iPad 1, 2, 3

c.iPhone 5 / iPod Touch (5th generation)

d.iPad Mini

25) Which of the following classes are thread-safe?

a.NSTask

b.NSTimer

c.NSRunLoop

d.NSBundle

26) Which of the following is NOT supported by the UIResponder class?

a.Selecting text.

b.Cutting, copying and pasting text.

c.Making text bold, changing to italics and underlining text.

d.Changing font size of selected text.

27) Do you need user authorization before accessing a library in an iOS 6 system?

a.Yes

b.No

28) Which of the following classes are used to restore the state of an application?

a.UIAppdelegate new methods for restoration

b.UIViewControllerRestoration

c.RestorePoint

d.UIStateRestore

29) Which of the following tasks can be performed using the UIActivity class?

            a.Posting to Facebook and Twitter

b.Mailing and messaging

c.Copying to the pasteboard

d.Adding to Passbook

30) Which of the following devices CANNOT be upgraded to iOS 6?

            a.iPhone 3

b.iPhone 3GS

c.iPhone 4

d.iPhone 5

31) What is the valid icon size (in pixels) for an iPhone 5 app?

            a.57 x 57

b.144 x 114

c.114 x 114

d.58 x 58

e.57 x 57 and 114 x 114

32) Which of the following is the best way to create an application which supports multiple resolutions?

            a.Defining a nib file for each resolution.

b.Using the AutoResize property.

c.Using layout constraints.

d.Creating each view programmatically according to the screen size.

33) Which of the following is NOT true regarding iOS 6?

            a.A user can prevent applications from accessing the image library.

b.You can make a check to send request on cellular network.

c.A user can share images from the image library with the help of the share button.

d.Apps can provide routing directions.

34) Which of the following classes of the Foundation framework has been enhanced with new features in iOS 6?

            a.NSJsonSerialization

b.NSByteCountFormatter

c.NSFileManager

d.NSCache

e.NSCoder

35) Which of the following classes supports key-value pairs?

            a.NSArray

b.NSDictionary

c.NSKeyPair

36) NSObject is:

a.a class.

b.a protocol.

c.Both a and b.

d.Neither a nor b.

37) Do apps designed for iOS 6 save their current state before getting terminated?

            a.Yes

b.No

38) Which of the following languages is used to write the Automation test scripts for an iOS application?

            a.C

b.AppleScript

c.JavaScript

d.J-Script

39) Consider the following code:

#import #import "AppDelegate.h" int main(int argc, char *argv[])   {     @autoreleasepool     {         int i=0;         return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));         printf("%i %i %i",i++,++i,i);     }   }

What will be the output of this code?

            a.0 2 2

b.1 2 2

c.1 2 0

40) Which of the following compilers supports ARC?

            a.LLVM 4.1

b.GCC (Not sure)

c.LLVM GCC

d.None of the above

41) Which class is used to handle the downloadable content associated with a product purchased from the App Store?

            a. NSURLConnection

b. NSURLDownloader

c. SKDownload

d. All of the above

42) Can you use @property without using @synthesize directive?

            a. Yes

b. No (Not sure)

43) Which of the following can be used as alternatives to the AutoResize property?

            a. UILayoutConstraintAxis (not sure)

b. Fitting Size

c. setBounds

d. Setting multiple frames in nib file (not sure)

44) Which of the following is the minimum supported deployment target with Xcode 4.5?

            a. iOS 3.1

b. iOS 4.3 (Not sure)

c. iOS 4.0

d. iOS 5.0

e. iOS 4.5

45) In iOS, which of the following methods are used to change the orientation of a device?

            a. shouldAutorotate

b. supportedInterfaceOrientations

c. shouldAutorotateToInterfaceOrientation

46) Which of the following is a property of the UIDevice class that determines the vendor (developer) of an application?

            a. identifierForVendor

b. developerId

c. developerIdentifier

d. appVendor

47) Which of the following is true?

            a. iPhone supports SQLite as its database.

b. iPhone supports SQL as its database.

c. iPhone supports DB2 as its database.

d. iPhone supports Core Data as its database.

48) Which of the following statements is NOT true regarding Objective-C methods?

            a. The methods defined with a + sign (i.e. + (void)method;) can be accessed without using any object of that class, i.e., with the class name.

b. The methods defined with a - sign (i.e. - (void)method;) can only be accessed through objects.

c. The methods defined with a + sign (i.e. + (void)method;) can access instance variables of that class.

d. The methods defined with a + sign (i.e. + (void)method;) can also be used with objects of that class

49) In which format will the statement given below generate the output?

NSArray * array=[NSArray arrayWithObjects:[NSDictionary dictionaryWithObject:@"Test One" forKey:@"KEY"],[NSDictionarydictionaryWithObject:@"Test two"forKey:@"KEY"],[NSDictionary dictionaryWithObject:@"Test three" forKey:@"KEY"],nil];[array writeToFile:@"abc.txt" atomically:YES];

            a. SQLite

b. XML

c. JSON

d. Plain text

50) Which of the following is NOT a GKChallengeEventHandlerDelegate method?

            a. localPlayerDidSelectChallenge:

b. localPlayerDidReceiveChallenge:

c. remotePlayerDidCompleteChallenge:

d. challengeEventHandler:

51) Which of the following is used in a multithreaded environment?

            a. @lock(){
}

b. @synchronized(){
}

c. @synchronize(){
}

d. synchronize(){
}

52) Do the Auto Layout constraints of iOS 6 become enabled when you develop an application for iOS 5 in Xcode?

            a. Yes

b. No

c. Depends upon the iOS SDK version

53) Which of the following is NOT a root class in the context of Objective-C?

a. NSObject

b. NSNetworkService

c. NSBase

d. NSProxy

54) Which of following protocols is used for the ViewController state restoration process in iOS 6?

              a. UIStateRestoration

b. UIStateRestorationDelegate

c. UIViewControllerRestoration

d. UIViewControllerRestorationDelegate

55) What will be the output of the following statement?

printf("%c %@",67,@"What is the matter dear");

            a. Compilation error

b. C @

c. C What is the matter dear

d. Runtime error: unsupported data type to printf statement

e. Something is wrong

56) What function will the following code perform?

x: [UINIB nibWithName:@"obj" bundle:bundle]

y: [[NSBundle mainBundle] loadNibNamed:@"obj.Xib" owner:self options:nil]

            a. x will return a nib file object for the file "obj.nib" in bundle.
y will do the same.

b. x will cause an error.
y will run properly and return a nib file object.

c. x will run properly and return a nib file object.
y will load a nib file which has " self" as the file owner and return a void type.

d. x will load a nib file object.
y will crash with an exception.

57) Can you develop applications for iOS 5 with Xcode 4.5?

            a. Yes

b. No

58) Can you provide a chat session to gamers with the GameKit framework?

            a. Yes

b. No

59) Which of the following classes can be used for thread synchronization?

            a.NSCondition

b.NSRecursiveLock

c.NSLock

d.NSSyncronizedThread 

60) Which of the following is NOT true regarding the In-App Purchase application?

            a.With In-App Purchase, users can buy products from the App Store from within the app.

b.Users can buy content from the iTunes Connect from within In-App Purchase.

c.In-App Purchase allows users to download content from Apple's servers from within the app.

d.Application should manage the work of downloading of any content provided with In-App Purchase.

61) Which of the following frameworks is/are used for accelerometers?

            a.UIKit

b.CoreMotion

c.Accelerate

d.All of the above

62) Which of the following architectures are supported by Xcode 4.5?

            a.ARMv6

b.ARMv7

c.ARMv8

d.ARMv7s

63) Which of the following features have been added to iOS 6?

a.Laser keyboard / iCloud backup

b.Apple Maps

c.Panorama camera mode

d.FaceTime over Cellular

64) iOS 6 SDK supports which of the following versions of Xcode?

            a.4.4

b.4.3

c.4.5

d.4.5.1

65) Which of the following are the correct icon sizes for the Newsstand shelf in iPod?

a.57 x 57

b.190 x 190

c.90 x 90

d.180 x 180

66) Which of the following functions is used to get the CTTextAlignment for the matching NSTextAlignment?

            a.CTTextAlignmentFromNSTextAlignment

b.NSTextAlignmentGetCTTextAlignment

c.NSTextAlignmentToCTTextAlignment

d.NSTextAlignmentGetCTTextAlignment

67) Which of the following is the default resizing mode?

            a.UIImageResizingModeTile

b.UIImageResizingModeStretch

68) Which of the following is NOT a (delegate) protocol for UICollectionView?

            a.UICollectionViewDelegate

b.UICollectionViewDelegateFlowLayout

c.UICollectionViewDelegateGridLayout

69) Which of the following classes is used to detect iPhone location information in iOS 6?

            a.MKMapItem

b.MKPlacemarker

c.MKAnnotation

d.MKShape

70) Which of the following provides access to an identifier for serving ads?

            a.iAd

b.Ad Support

c.Both a and b

71) Which of the following is NOT a debugging command for the LLDB debugger?

            a.po

b.print

c.expression

d.print_r

72) Which of the following methods of the PassKit framework is used to check if the pass library is available?

            a.isPassLibraryExist

b.canAccessPassLibrary

c.isPassLibraryAvailable

d.None of the above

73) In iOS 6, Facebook integration has been done using:

            a. Facebook.framework

b. Social.framework

c. FBLogin.framework

d. SocialNetworks.framework

74) Which of the following is a new method of the UITableViewDelegate protocol?

            a. tableView:indentationLevelForRowAtIndexPath:

b. tableView:performAction:forRowAtIndexPath:withSender:

c. tableView:shouldHighlightRowAtIndexPath:

d. tableView:shouldIndentWhileEditingRowAtIndexPath:

75) Which of the following is NOT true regarding the UISwitch class?

            a. It is a Boolean control which is used to control the on/off state of a property.

b. You can specify images for the on/off states to customize this control.

c. The size of the switch control is fixed.

d. The UISwitch control color is not changeable. It cannot be changed with the Interface Builder.

76) What is the correct syntax for printing enumeration LLDB for the following enumeration?

enum TestEnum{TestEnumName,TestEnumSex,TestEnumAge}

            a. print TestEnumName

b. print TestEnum::TestEnumName

c. ExprEssion TEstEnum::TEstEnumNamE

d. print_r (TestEnum->TestEnumName)

77) Which of the following classes is used to detect iPhone location information in iOS 6?

            a.MKMapItem

b.MKPlacemarker

c.MKAnnotation

d.MKShape

e.None of the above.

78) Which of the following UILabel properties help adjust text within a UILabel?

            a.lineBreakMode

b.adjustsFontSizeToFitWidth

c.numberOfLines

d.drawTextInRect:

79) Is it possible to set multiple architecture from Build Settings tab in Xcode for a project?

            a.Yes

b.No

c.only in Xcode 4.5 or later

d.only in Xcode 4.5 or previous

80) Which of the following is not an Open Source Framework/Library?

a.MBProgressHUD

b.ASIHTTPRequest

c.RestKit

d.StoreKit

81) What could be the probable result if selector is unknown or undefined?

            a.Causes memory leak

b.Causes application to terminate with error

c.Nothing will happen

d.None of above

82) Which of the following properties is preferred for setting formatted text in the iOS 6 UILabel class?

            a.text

b.formattedText

c.styledString

d.attributedText

83) In order to make sure that a WebView is allowed to draw on screen only when the request is fully loaded, you use:

            a.renderOnComplete

b.drawOnComplete

c.suppressesIncrementalRendering

d.waitForDraw

e.dataDetectorTypes

84) How can the application name of an iOS project be changed?

            a.Change Bundle Display Name from info.plist

b.Rename Project

c.Change bundle identifier

d.Create a new project with New name

85) Which of the following font packages are supported by Cocoa-Touch?

a..ttf (True Type Font)

b..ttc (True Type font Collection)

c..otf (Open Type Font)

d..dFont (MAC OS X Data Fork Font)

86) Is it possible to deploy beta build on any device?

a.Yes beta build can be deployed on any iOS device.

b.Beta build can be deployed only on devices that are included in Mobile Provision certificate while compiling build.

c.Beta Build can be deployed only on Simulators.

d.All of above

87) Which of the following classes are used to restore the state of an application?

            a.UIApplicationdelegate new methods for restoration

b.UIViewControllerRestoration

c.RestorePoint

d.UIStateRestore

88) Which of the following is the best way to add a UIToolbar above keyboard?

            a.-(void)keyboardWillShow:(NSNotification *)notification
{
[self.view addSubview:toolbar];
}

b.-(void)textFieldDidBeginEditing:(UITextField *)textField 
{ 
[self.view addSubview:toolbar];
}

c.Always keep UIToolBar visible on screen.

d.-(void)keyboardWillHide:(NSNotification *)notification
{
[self.view addSubview:toolbar];
}

89) What property in info.plist handles the association of file types in an iPhone application?

            a.LSItemContentTypes

b.LSHandlerRank

c.CFBundleTypeName

d.CFBundleTypeRole

90) Which of the following is best JSON library to be used in iOS applications?

            a.SBJSON

b.JSON kit

c.Touch JSON

d.None of these

91) Which property of UIBarButtonItem would be use to make a custom back button on the toolbar?

a.initWithCoder:(NSCoder *)

b.initWithImage:(UIImage *) style:(UIBarButtonItemStyle) target:(id) action:(SEL)

c.initWithCustomView:(UIView *)

d.initWithBarButtonSystemItem:UIBarButtonSystemItem target:(id) action:(SEL)

92) Which property would be used to get the UDID of UIDevice on iOS?

            a.[UIDevice UDIDString]

b.[UIDevice uniqueIdentifier]

c.-[UIDevice identifierForVendor]

d.None of these

93) Which framework can be used to call SOAP web services in iOS applications?

a.gSOAP

b.ASIHTTP framework

c.wsdl2objc framework

d.None of these

94) How many methods are mandatory for using UICollectionViewDelegate?

a.4

b.2

c.1

d.0

95) What is the new assembly language for the LLVM compiler?

            a.Universal Assembly Language (UAL)

b.United Assembly Language (UAL)

c.Unified Assembler Language (UAL)