Apple's implementation of HTTP Live Streaming supports DRM (Digital rights management).
Before editing the Nibs, one should:
Unlock all connections. 0.0%
Lock all connections. 100.0%
Break all connections. 0.0%
None of the above 0.0%
By default, is the search interface visible in the UISearchDisplayController class?
Consider the following code with 2 alternatives of vector operations for OpenGL ES: highp float f0, f1; highp vec4 v0, v1; Alternative 1: v0 = (v1 * f0) * f1; Alternative 2: v0 = v1 * (f0 * f1); ...
Alternative 1 0.0%
Alternative 2 100.0%
Both alternatives demonstrate proper use of vector operations. 0.0%
How much time in seconds will it take to display an animation if you have 60 images using UIImageView class for the property animationDuration?
1 0.0%
2 100.0%
10 0.0%
15 0.0%
If the code is written using the Core Foundation and Foundation macros, the simplest way to create strings files is:
Using an option in the Preferences panel of Interface Builder. 0.0%
By merging the comments from the individual entries into one comment string. 0.0%
By unlocking all connections. 0.0%
By using the genstrings command-line tool. 100.0%
If you want to rotate an object using Core Animation, in radians, in the z axis, which of the following key paths of a layer's CATransform3D matrix will you use?
rotation 22.0%
rotation.xy 0.0%
rotation.x 0.0%
rotation.y 0.0%
rotation.z 77.0%
Locking all connections before editing the Nib files can be achieved by using:
An option in the Start Menu. 0.0%
An option in the Preferences panel of Interface Builder. 100.0%
An option in the Preferences panel of Language Directory. 0.0%
Any of the above. 0.0%
The genstrings tool can parse _____.
C files with .c filename extension. 33.0%
Objective-C files with .m filename extension. 33.0%
Java code files with .java filename extension. 33.0%
Nib files with any file name extension. 0.0%
What are universal binaries in Xcode?
These are executable files that can contain code and data for more than one architecture. 100.0%
These are file references which are generated by the target, such as an application. 0.0%
These are indexes that contain symbolic information for your project. 0.0%
These are used to specify build location settings. 0.0%
What happens if Xcode is not able to find a file or folder at the path defined for it in the project?
Xcode skips the file or the folder and continues execution. 0.0%
Xcode gives an alert with a description of the missing file. 0.0%
Xcode displays the item in red in the project window. 100.0%
What is the data type of extendStart parameter of function CGShadingCreateAxial of class CGShading?
CGFloat 0.0%
CGPoint 0.0%
bool 100.0%
CGFunctionRef 0.0%
int 0.0%
What is the datatype of the clockwise parameter of the CGContextAddArc function of the CGContext class?
bool 0.0%
int 100.0%
CGFloat 0.0%
CGContextRef 0.0%
What is the datatype of the parameter inValidBitsPerChannel for the function CalculateLPCMFlags in CoreAudioTypes class in iPhone OS 4.0?
UInt32 100.0%
bool 0.0%
Float32 0.0%
UInt64 0.0%
What is the default setting to refer to file locations in your Xcode project?
Relative to Build Product 0.0%
Relative to Project 0.0%
Relative to Enclosing Group 100.0%
Relative to <source path> 0.0%
Absolute Path 0.0%
What is the default value of allowsEditing property of UIImagePickerController class in iPhone OS 4.0?
NO 100.0%
YES 0.0%
enable 0.0%
disable 0.0%
What is the default value of the borderColor property of the CALayer class?
0 0.0%
nil 0.0%
opaque black 100.0%
dark black 0.0%
What is the default value of the fontSize property of the CATextLayer class?
8.0 0.0%
12.0 0.0%
18.0 0.0%
36.0 100.0%
What is the default value of the remoteParticipantVolume property of the class GKVoiceChatService in iPhone OS 4.0?
0.0 0.0%
0.5 0.0%
1.0 100.0%
5.0 0.0%
What is the function of the Code Sense feature in Xcode?
Code Sense helps in switching between different circumstances such as development or release. 0.0%
Code Sense maintains an index that contains important information for your project. 0.0%
Code Sense creates a cache for the files which are being used frequently. 0.0%
Code Sense maintains an index of files used in a project. 0.0%
Code sense is the code completion feature helpful in avoiding typing and syntax errors. 100.0%
What is the functionality of the beta parameter of function catlas_caxpby in class cblas?
Input vector X 0.0%
Input vector Y 0.0%
Scaling factor for X 0.0%
Scaling factor for Y 100.0%
What is the return value of function CGColorGetAlpha of class CGColor?
An alpha intensity value in the range [-1,1] 0.0%
An alpha intensity value in the range [-0.5,0.5] 0.0%
An alpha intensity value in the range [0,1] 100.0%
An alpha intensity value in the range [1,5] 0.0%
What is the return value of SecRandomCopyBytes function of SecRandom class in iPhone OS 4.0 if the function completes successfully?
0 100.0%
1 0.0%
-1 0.0%
true 0.0%
What is the value type of UTTypeConformsTo key of uniform type identifier for iPhone OS 4.0?
array of dictionaries 0.0%
array of strings 100.0%
string 0.0%
dictionary 0.0%
integer 0.0%
What type of value is assigned to the loc-args child property of alert property in an Apple Push Notification?
string 0.0%
array of strings 100.0%
number 0.0%
dictionary 0.0%
What will be the return value of CFHTTPMessageApplyCredentials function of CFHTTPMessage class if the authentication is successful?
TRUE 100.0%
FALSE 0.0%
nil 0.0%
0 0.0%
1 0.0%
What will be the return value of function ABPersonComparePeopleByName when person1 goes before person2 in class ABPersonComparePeopleByName in iPhone OS 4.0?
kCFCompareLessThan 100.0%
kCFCompareEqualTo 0.0%
kCFCompareGreaterThan 0.0%
None of the above 0.0%
What will be the value of the clockwise parameter of the CGContextAddArc function of the CGContext class if you want to create a counterclockwise arc?
0 100.0%
1 0.0%
True 0.0%
False 0.0%
What will happen if an application is running and the user presses the Home button in iPhone OS 4.0 with 3GS?
The application will be terminated. 0.0%
The application will be shifted to background execution context. 100.0%
The application will continue to run until its execution ends. 0.0%
The application will be paused. 0.0%
What will happen if your filename ExampleImage.png is being called as follows: [UIImage imageNamed:@"ExampleImage.PNG"]
The image file will load in the simulator but not in iPhone OS 4.0 because it is case sensitive. 100.0%
The image file will load in iPhone OS 4.0 but not in the simulator because it is case sensitive. 0.0%
The file will load in both the simulator and iPhone OS 4.0 because they are both case insensitive. 0.0%
The file will load neither in the simulator nor in iPhone OS 4.0 because they are both case sensitive. 0.0%
What will the following method call do if the value of the accessed counter is 0? - (void)discardContentIfPossible
It will discard the contents of the object because the counter is 0. 100.0%
It will not discard the contents of the object because the counter is required to be above 0. 0.0%
It will not discard the content of the object as a negative counter value is required. 0.0%
None of the above 0.0%
What will the following method definition do if the value of the accessed counter is 0? - (void)discardContentIfPossible
It will discard the contents of the object because the counter is 0. 100.0%
It will not discard the contents of the object because the counter is required to be above 0. 0.0%
It will not discard the content of the object as a negative counter value is required. 0.0%
None of the above 0.0%
What will the hitTest: object of the CALayer class return if the point lies outside the receiver's bounds rectangle?
nil 100.0%
true 0.0%
false 0.0%
0 0.0%
When the genstrings tool discovers a key string used more than once in a single strings file, it:
deletes the comments from the individual entries and leaves one comment string without generating a warning. 0.0%
merges the comments from the individual entries into one comment string and generates a warning. 100.0%
differentiates the comments from the individual entries into various strings and generates a warning. 0.0%
None of the above 0.0%
When using a Cocoa framework, what will all ControlEvents method of UIControl class return in case it fails to create the object?
failure to create 0.0%
no object to return 14.0%
status code 420 0.0%
nil 85.0%
When you send an object a retain message in Memory Management using Objective-C, what will happen?
Its retain count is incremented by 1. 100.0%
Its retain count is decremented by 1. 0.0%
Its retain count remains same. 0.0%
Its retain count is set to 0. 0.0%
When your session becomes active, which of the following iPhone OS 4.0 audio session categories allows other audio to continue playing?
AVAudioSessionCategoryAmbient 100.0%
AVAudioSessionCategorySoloAmbient 0.0%
AVAudioSessionCategoryPlayback 0.0%
AVAudioSessionCategoryRecord 0.0%
Which Audio Toolbox framework file defines an interface for reading and writing audio data in files in iPhone OS 4.0?
AudioConverter.h 0.0%
AudioFile.h 100.0%
AudioFileStream.h 0.0%
AudioServices.h 0.0%
Which Core Audio Service framework is used to record, play back, pause, loop, and synchronize audio in iPhone OS 4.0?
Audio Queue 100.0%
Music Sequencing Services 0.0%
Core Audio Clock 0.0%
System Sound Services 0.0%
Which Core Audio Services framework handles positional and low-latency audio services in iPhone OS 4.0?
Audio Toolbox 0.0%
Audio Unit 0.0%
AV Foundation 0.0%
Core Audio 0.0%
OpenAL 100.0%
Which of the following animation class provides simple interpolation between values for a layer property?
CABasicAnimation 100.0%
CAKeyframeAnimation 0.0%
CATransition 0.0%
CAAnimationGroup 0.0%
Which of the following are new features to have been introduced in iPhone OS 4.0?
Multitasking 0.0%
Apple Push Notification Service 0.0%
Local Notification 0.0%
Gesture Recognizers 100.0%
Which of the following are NOT a property of UIImagePickerController class in iPhone OS 4.0?
cameraCaptureMode 0.0%
mediaTypes 0.0%
startVideoCapture 55.0%
takePicture 44.0%
videoQuality 0.0%
Which of the following are the Derivative types defined in Objective-C?
short 30.0%
long 30.0%
long long 40.0%
int 0.0%
Which of the following copy functions will you use in Objective-C to create an entirely new compound object?
Shallow Copy 0.0%
Deep Copy 100.0%
Both a and b 0.0%
Which of the following debugging environments are provided by Xcode to find and squash bugs in your code?
Debugging from the text editor 0.0%
Mini Debugger 0.0%
Debugger window 0.0%
GDB debugger console 0.0%
All of the above 100.0%
Which of the following debugging tasks are provided by Xcode to find and squash bugs in your code?
Add and set breakpoints. 0.0%
View your call stack per thread. 0.0%
View the value of variables by hovering the mouse pointer over them. 0.0%
Execute a single line of code. 0.0%
All of the above 100.0%
Which of the following defined types is a dynamic object type in Objective-C?
id 100.0%
Class 0.0%
SEL 0.0%
BOOL 0.0%
Which of the following directives are used to declare and define classes, categories, and protocols?
@interface 18.0%
@implementation 25.0%
@protocol 18.0%
@class 18.0%
@end 18.0%
Which of the following is NOT a parameter of function SecKeyDecrypt of the class SecCertificate in iPhone OS 4.0?
key 0.0%
padding 0.0%
cipherText 0.0%
certificate 100.0%
Which of the following is NOT the default behavior of an audio session in iPhone OS?
Playback is disabled and recording is enabled. 100.0%
When you move the Ring/Silent switch to the "silent" position, your audio is silenced. 0.0%
When you press the Sleep/Wake button to lock the screen, or when the Auto-Lock period expires, your audio is silenced. 0.0%
When your audio starts, other audio on the device—such as iPod audio that was already playing—is silenced. 0.0%
Which of the following is the correct syntax for declaring a class in Objective-C?
@interface ClassName : ItsSuperclass { instance variable declarations } method declarations @end 100.0%
@implementation ClassName : ItsSuperclass { instance variable declarations } method declarations @end 0.0%
@class ClassName : ItsSuperclass { instance variable declarations } method declarations @end 0.0%
All are correct 0.0%
Which of the following languages can be used to write the code for Xcode projects?
C 21.0%
C++ 21.0%
Objective-C 26.0%
Objective-C++ 21.0%
Java 10.0%
Which of the following methods is used for the purpose of creating your view objects in memory management?
Initialization methods 0.0%
loadView 20.0%
viewDidLoad 80.0%
dealloc 0.0%
Which of the following need to be modified while localizing an application?
Nib files (windows, views, menus). 26.0%
Static text. 26.0%
Icons and graphics. 20.0%
Dynamic text generated by your program. 26.0%
Which of the following OpenGL ES objects is a simple 2D graphics image in a specified format?
texture 0.0%
buffer 0.0%
shaders 0.0%
renderbuffer 100.0%
framebuffers 0.0%
Which of the following properties of ADBannerView class are read-only?
bannerLoaded 66.0%
currentContentSizeIdentifier 0.0%
bannerViewActionInProgress 33.0%
delegate 0.0%
requiredContentSizeIdentifiers 0.0%
Which of the following properties of the CAKeyframeAnimation class represents an optional array of NSNumber objects that define the duration of each keyframe segment?
path 0.0%
keyTimes 100.0%
rotationmode 0.0%
continuityValues 0.0%
Which of the following properties of the GKSession class is read-only?
available 0.0%
delegate 0.0%
displayName 38.0%
peerID 30.0%
sessionID 30.0%
Which of the following properties of the UIImage class are not in use after iOS 4.2?
imageOrientation 0.0%
size 0.0%
leftCapWidth 50.0%
topCapHeight 50.0%
Which of the following reasons will return a value of NO for the instance method startVideoCapture of class UIImagePickerController?
Movie capture is already in progress. 0.0%
The device does not support movie capture. 0.0%
The device is out of disk space. 0.0%
All of the above 100.0%
Which of the following statements is correct regarding functions fopen and open in generic C?
fopen returns an error if the file does exist. 0.0%
fopen does not automatically create the file if it does not exist. 100.0%
open returns an error if the file does exist. 0.0%
open returns a file descriptor. 0.0%
Which of the following statements regarding Objective-C are correct?
In Objective-C, the keyword for NULL is nil. 0.0%
In Objective-C, #import and #include compiler directives carry out the same operations. 12.0%
In Objective-C, for the object-oriented constructs (such as method return values), id is the default data type. 50.0%
The keyword nil has an id with a value of 0. 37.0%
Which of the following terms are related to Memory Management in Objective-C?
alloc 33.0%
mutableCopy 33.0%
delete 0.0%
release 33.0%
Which of the following types of audio files has NO size restriction?
AIFF 0.0%
WAVE 0.0%
CAF 100.0%
All of the above have file size restrictions. 0.0%
Which part of the HTTP Live Streaming is responsible for taking input streams of media and encoding them digitally?
Server component 100.0%
Distribution component 0.0%
Client software 0.0%
None of the above 0.0%
Which symbol is used as a syntactic marker for blocks of code in iPhone OS 4.0?
~ 0.0%
$ 0.0%
^ 100.0%
* 0.0%
While opening Nib files, which of the following should not be ignored?
Objects in a Nib file typically have connections between them that should not be broken. 100.0%
If Objects in a Nib file have broken connections, they should not be restored. 0.0%
The size of the files. 0.0%
None of the above 0.0%
You want to animate a layer's opacity to 0 while moving it further away in the layer. Which of the following code snippets will you use?
theLayer.opacity=0.0; theLayer.zPosition=0; 0.0%
theLayer.opacity=0.0; theLayer.zPosition= -100; 80.0%
theLayer.opacity=0.0; theLayer.zPosition=100; 20.0%
theLayer.opacity=1.0; theLayer.zPosition=0; 0.0%