Showing posts with label Upwork > Mobile Technologies. Show all posts
Showing posts with label Upwork > Mobile Technologies. Show all posts
Thursday, 12 November 2015
Thursday, 20 August 2015
iOS 5 Programming Skills Test
iOS 5 Programming Skills Test
Which
of the following is NOT allowed in iOS?
a. Creating
a file in the Documents directory.
b. Creating
a file in a bundle directory.
c. Moving
a file from a bundle directory to the Documents directory.
d. Copying
a file from a bundle directory to the Documents directory.
Which
of the following is FALSE about the NSFetchRequest class?
a. You
can fetch only one type of entity per fetch request.
b. You
can fetch only two types of entity per fetch request.
c. You
can fetch multiple types of entity per fetch request.
What
is the default compiler in an iPhone project?
a. LLVM
GCC4
b. Apple
LLVM Compiler 3.2
c. GCC
2.0
d. CC
Which
of the following signing certificates is NOT supported by iOS5?
a. SHA1
b. SHA2
c. MD5
d. None
of the above
Which
of the following are true regarding the AVAudioSession class?
a. AVAudioSession
allows your application to access the audio hardware resources.
b. To
record audio with the AVAudioRecorder, you must initialize an AVAudioSession
before you start recording.
c. AVAudioSession
allows you to define the preferred audio hardware sample rate and the I/O
buffer duration.
d. All
of the above.
In
which situations does the following error occur?
EXE_ACCESS_BAD_ACCESS
a. When
an invalid memory address is accessed.
b. When
the function of a deallocated object is called.
c. When
an object with retain count 0 is accessed.
d. All
of the above.
Which
of the following map APIs does iOS5 use?
a. Apple
Map Kit
b. Google
Maps
c. Route-Me
d. MapBox
e. None
of these
Which
two of the following are most preferable when an application is communicating
with the network services?
a. The
application should check the speed of the network before sending any request.
b. The
application should send asynchronous request to the server.
c. The
application should show a progress bar/progress indicator while downloading a
large amount of data.
d. The
application should use cache to speed up the network request.
Which
property of CSS was NOT available in Safari and WebKit before iOS5?
a. -webkit-overflow-scrolling
b. -webkit-touch-callout
c. -webkit-padding-start
d. -webkit-transition-delay
Is
it possible to store NSRect or CGColor type data in a Core Data class?
a. Yes
b. No
Which
of the following can be used to set the frame rate of the screen?
a. framesPerSecond
b. preferredFramesPerSecond
c. framesDisplayed
d. None
of the above
Which
of the following statements is true regarding NSObject?
a. NSObject
is a class and not a protocol.
b. NSObject
is a protocol and not a class.
c. NSObject
is both a protocol and a class.
d. NSObject
is neither a protocol nor a class.
What
will happen if you programmatically select the picker row?
a. The
delegate method - (void)pickerView:(UIPickerView *)pickerView
didSelectRow:(NSInteger)row inComponent:(NSInteger)component will be called.
b. There
will be no call to - (void)pickerView:(UIPickerView *)pickerView
didSelectRow:(NSIntegeR)row inComponent:(NSInteger)component method.
c. Depends
on the iOS SDK version for development.
d. None
of the above.
Is
Core Data a relational database management system?
a. Yes
b. No
Which
of the following is true regarding iCloud?
a. You
can upload and share files on multiple devices with iCloud.
b. There
is a new framework for iCloud.
c. You
can upload files to iCloud with the help of NSFileManager.
d. You
can't use iCloud in your applications. It works automatically.
Which
of the following third party frameworks are used for developing games?
a. Sencha
Touch
b. Cocos2d
c. Box2d
d. Unity
Which
of the following is the correct syntax for calling a function in Objective-C?
a. obj.method()
b. obj.method
c. obj->method()
d. [obj
method]
Which
of the following are the uses of the new Assets Library?
a. Allows
access to the photo stream.
b. Lets
you create a new library and add new images to an album.
c. Lets
you create thumbnails from an asset.
d. Helps
you modify and save existing assets.
e. Lets
you sync photo stream between different devices.
In
what format are the strings defined in the .xib file stored?
a. UTF
8
b. Base64
c. ANSCII
d. UTF
16
How
many main() method/s can you have in a single iPhone application?
a. 1
b. 2
c. As
many as you want
d. no
need of main
Which
new security framework was introduced in iOS5?
a. GSS
.framework
b. Generic
Security .framework
c. System
Security .framework
d. System
Configuration .framework
Which
of the following is true in the context of storyboards and view controllers?
a. They
can be used together.
b. They
cannot be used together.
c. Storyboards
can be used within a single page application.
Which
of the following frameworks is required for real-time audio output?
a. AudioToolbox
b. AVFoundation
c. OpenAL
d. OpenGLES
Which
of following is true of Core Data?
a. You
can create more than one data model in one application, where each data model
can have more than one table.
b. You
can have more than one managed contexts in one application.
c. Database
schema needs to be defined using ManagedObjectContext.
d. You
can rollback the changes made in the managed object contact with the help of
rollback, reset and undo methods.
Where
can NSPredicate be used?
a. CoreData
Query
b. Search
in NSArray
c. String
compare
d. Sorting
Which
of the following statements is true in the context of Objective-C?
a. Function
overloading is supported in Objective-C.
b. Function
overloading is not supported in Objective-C.
c. Framework
classes cannot be inherited.
d. While
creating categories, we can create new variables.
If
an application is created using a storyboard, then which of the following is
true?
a. The
application will work only on iOS 5 and above.
b. The
application will work on all iOS.
c. The
application will not work on iPod touch 4G with iOS5.
Which
of the following features are new in iOS 5?
a. Siri
b. Twitter
integration
c. Notification
Center
d. All
of the above
Which
of the following frameworks provides a single sign-on model?
a. Twitter
b. Accounts
c. System
d. GSS
Is
Core Data framework thread safe?
a. Yes
b. No
Which
of the following is true?
a. ARC
is a feature of Xcode.
b. ARC
is a feature of Compiler.
c. ARC
is a feature of Linker.
d. ARC
is a feature of Debugger.
Which
framework is used for video/image editing?
a. UIkit
b. AVFoundation
c. CoreImage
d. CoreGraphics
e. All
of the above
Which
of following is/are (a) new gaming framework/s introduced in iOS 5?
a. GLKit
b. GSS
c. OpenGLES
d. All
of the above
What
is the meaning of ARC (Automatic Reference Counting) in the context of
Objective-C?
a. The
whole program runs under autorelease pools.
b. Referencing
is taken care of at compile time in accordance with the life cycle of the
variable.
c. Memory
management is handled at compile time by Xcode.
d. Memory
management is handled by the compiler.
Which
of the following classes are NOT thread safe?
a. NSArray
b. NSAutoreleasePool
c. NSMutabelArray
d. NSNumber
e. NSUserDefaults
Is
it possible to disable a track of a composition?
a. Yes
b. No
Which
of the following is true of ARC?
a. ARC
can be enabled at the time of project creation only.
b. ARC
can also be enabled after the project has been created.
c. ARC
can be enabled/disabled for individual files.
d. Once
enabled, ARC cannot be disabled.
Which
of the following is NOT an OpenGLES method?
a. glclear()
b. glClearColor()
c. glDrawArrays()
d. glDrawTexture()
Which
of the following properties can be used to make changes to the keyboard in iOS?
a. InputView
b. inputtype
c. inputAccessoryView
d. keyboardType
Which
of the following is NOT an AVAudioSessionMode?
a. AVAudioSessionModeDefault
b. AVAudioSessionModeVoiceChat
c. AVAudioSessionModeMoviePlayback
d. AVAudioSessionModeVideoRecording
Mobile Game development using Android OS
Upwork Test Categories
If
you are creating a new Android game using Eclipse, which of the following is
the correct procedure to do so?
a. File–>New–>Android
Application Project–>Fill in the required Details and click Finish.
b. File–Android
–>New Project–>Fill in the required Details and click Finish.
c. File–>java–>Android–>
Application Project–>Fill in the required Details and click Finish.
d. File–>projects–>New
Game Project–>Fill in the required Details and click Finish.
In order
to create pop-up windows inside an Android game, a/an ________ class is used.
a. Dialog
b. ActivityWindow
c. PopupActivity
d. PopupWindow
Suppose
you are developing an Android game using eclipse. If you want to change the
version number of your game, which file should you edit to do so?
a. MainActivity.java
b. BuildConfig.java
c. AndroidManifest.xml
d. Style.xml
e. None
of the above
In
an Android project which of the files should not be modified?
a. BuildConfig.java
b. R.java
c. AndroidManifest.xml
d. MainActivity.java
In
the method given below, which code line sets the class
"MainGamePanel" as the handler of the events happening on the actual
surface?
1. public class MainGamePanel extends
SurfaceView implements
2. SurfaceHolder.Callback {
3. public MainGamePanel(Context context) {
4. super(context);
5. getHolder().addCallback(this);
6. setFocusable(true);
7. }
a. 4
b. 5
c. 6
d. None
of the above
Which
of the following log(s) is/are supported by Android.Util.Log class?
a. Error
b. Warning
c. Verbose
d. Debug
e. All
of the above
The
application context for the current process can be retrieved using which of the
following methods in Android?
a. Context
context=New Context(this);
b. Context
context=getApplicationContext();
c. Context
context=getContext(this);
d. Context
context=New Applicationcontext();
The
base class for Android Activity class is_______________.
a. Android.app.Activity
b. java.lang.Object
c. Android.app.admin
d. None
of the above
This
question is based upon the figure shown below
In
Eclipse, which of the following is the icon of Android SDK Manager?
a. I
b. II
c. III
d. IV
e. V
f. VI
Suppose
you want to draw an image, roboimage.png to coordinates (20, 20). The image is
already present in the respective folder. Which of the following is the correct
syntax to do so?
a. protected
void Draw(Canvas canvas) {
canvas.drawimage(BitmapFactory.Resource(getResources(),
R.drawable.roboimage), 20, 20);
b. protected
void Canvas() {
canvas.drawimage(BitmapFactory.decodeResource(getResources(),
R.drawable.roboimage), 20, 20, null);
c. protected
void onDraw(Canvas canvas) {
canvas.drawBitmap(BitmapFactory.decodeResource(getResources(),
R.drawable.roboimage), 20, 20, null);
d. protected
void Canvas() {
drawimage(BitmapFactory.decodeResource(getResources(),
R.drawable.roboimage), 20, 20);
e. None
of the above
Which
of the following image formats is/are supported by Android?
I. .jpg
II. .gif
III. .png
IV. .webp
a. I,
II, III
b. II,
III, IV
c. I,
III, IV
d. III,
IV
e. All
of the above
Which
of the following options is valid to create an AVD in Eclipse?
a. Go
to Window menu –> select Android virtual device manager –> Android
virtual devices tab –> New –> Fill in the details for AVD –> Click Ok.
b. Go
to Source– >Select Android Virtual Device –> Android virtual devices tab
–> Fill in the details for AVD–>Click Create AVD.
c. Go
to Window– >Select New Android Virtual Device–> Android virtual devices
tab –> Enter name of AVD–>Click Create AVD.
d. Go
to Refractor –> Select Android –> Select Android Virtual Device–>
Android virtual devices tab –> Enter name of AVD-Click Create AVD.
While
creating an Android Virtual Device (AVD) which of the following hardware
options is fixed and cannot be changed by the user?
a. RAM
size
b. Battery
Support
c. Cache
partition size
d. DPad
Support
e. None
of the above
If a
developer wants to modify the fundamental characteristics and components of an
Android application developed using Eclipse, then which file he should edit to
do so?
a. MainActivity.java
b. AndroidManifest.xml
c. BuildConfig.java
d. both
b and c
The
architecture used by DVM (Dalvik Virtual machine) is ___________ based.
a. queue
b. stack
c. register
d. All
of the above
e. None
of the above
Study
the method given below and answer the following question:
public Triangle() {
1.ByteBuffer vertexByteBuffer =
ByteBuffer.allocateDirect(vertices.length * 4);
2.
vertexByteBuffer.order(ByteOrder.nativeOrder());
3. vertexBuffer =
vertexByteBuffer.asFloatBuffer();
4. vertexBuffer.put(vertices);
5. vertexBuffer.position(0);
}
Which
code line allocates memory from byte buffer?
a. 1
b. 2
c. 3
d. 4
e. 5
In
order to retrieve a vibrator for interacting with the vibration hardware, which
of the following code is used in Android .java file (in eclipse)?
a. Vibrator
vibrator = getSystemService(Activity.VIBRATOR_SERVICE);
model.setVibrator(vibrator);
b. Vibrator
vibrator = (Vibrator) getService(Activity.VIBRATOR_SERVICE);
setVibrator(vibrator);
c. Vibrator
vibrator = (Vibrator)getSystemService(Activity.VIBRATOR_SERVICE);
model.setVibrator(vibrator);
d. None
of the above
Which
of the following Android code is used to access the Android device's sensor
service?
a. private
SensorManager sensor_M;
Sensor_M= (SensorManager)
getSystemService(SENSOR_SERVICE);
b. private
Sensor sensor_M;
sensor_M= getSystemService(SENSOR_SERVICE);
c. private
SytemSensorManager sensor_M;
sensor_M= (SensorManager)
getService(SENSOR_SERVICE);
d. private
Manager sensor_M;
Sensor_M= (Sensor)
getSystemService(SENSOR.SERVICE);
State
whether the following statement is true or false.
For
handsets (mobile phone) debugging of Android applications, you cannot use
eclipse.
a. True
b. False
How
can you view the LogCat in your Eclipse editor?
a. Window–>Open
perspectives–>Android–>LogCat
b. Window–>Others–>General–>LogCat
c. Window–>Show
View–>Java–>General–>LogCat
d. Window–>Show
View–>Other–>Android–>LogCat
For
Android games, which of the following font types should we use so that the font
size remains consistent on different types of devices with different screen
sizes?
a. 3D
font
b. Dotted
Font
c. Bitmap
Font
d. Modern
Font
In
mobile games, what is the ideal frame rate in frame per second (fps) for no
noticeable glitches in the motion of objects?
a. ~20fps
b. ~30fps
c. ~40fps
d. ~50fps
e. ~60fps
In
Android, a tool called DX is used to convert java .class files into
_________format.
a. .dx
b. .dex
c. .exd
d. .exe
e. None
of the above
Which
of the following is the suggested location for storing the string resources in
an Android application?
a. /res/values/string.xml
b. /res/values/styles.xml
c. /layout/values/string.xml
d. /layout/values/styles.xml
Suppose
you are developing an Android game for mobiles. If you want to set the volume
button of your phone to handle sounds of the game, which of the following is
the correct syntax to do so?
a. context.setVolumeControlStream(AudioManager.STREAM_MUSIC);
b. setVolumeControlStream(context.AudioManager.STREAM_MUSIC);
c. context.setVolumeControlStream(SoundManager.STREAM_MUSIC);
d. setVolumeControlStream(context.SoundManager.STREAM_MUSIC);
Which
of the following methods is used to display text on screen in eclipse?
a. public
void displayString(String text, int x, int y){
Canvas canvas;
for (int i = 0; i < text.length(); i++)
{
Character Ch = text.CharAt(i);
if (glyphs.get(ch) != null) {
canvas.drawBitmap(glyphs.get(ch), x + i,
(y* width), null); } } }
b. displayString(Canvas
canvas, String text) {
int x;
int y;
for (int x = 0; x < text.length(); x++)
{
Character ch
if (glyphs.get(ch) != null) {
canvas.drawBitmap(glyphs.x + (i * width.y,
null); } } }
c. public
void displayString(Canvas canvas, String text, int x, int y){
for (int i = 0; i < text.length(); i++)
{
Character Ch = text.CharAt(i);
if (glyphs.get(ch) != null) {
canvas.drawBitmap(glyphs.get(ch), x + (i *
width), y, null); } } }
d. public
void displayString(Canvas canvas, String text, int x){
for (int y = 0; y < text.length(); y++)
{
Character ch
if (glyphs.get(ch) != null) {
canvas.drawBitmap(glyphs.get(ch), x *
width), null); } } }
Which
of the following code lines is needed to be added in Android manifest file (in
eclipse),outside of the block, for retrieving a vibrator that interacts with
the vibration hardware?
a. <uses-permission
Android:name="permission.VIBRATE"></uses-permission>
b. <uses-permission
Android:name="Android.permission.VIBRATE"></uses-permission>
c. <uses-permission
Android:name="Android.VIBRATE"></uses-permission>
d. <uses-permission
Android ="Android.permission.VIBRATE"/>
e. It
is not required to be added.
What
are application assets in Android?
a. They
are used very infrequently to store uncompiled files within the application
package file that is installed on the handset.
b. They
are used very frequently to store uncompiled files within the application
package file that is installed on the handset.
c. They
are used very infrequently to store compiled files within the application
package file that is installed on the handset.
d. They
are used very frequently to store compiled files within the application package
file that is installed on the handset.
Study
the Android method given below and answer the following question:
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
What
is the function of the given method?
a. It
shows all the menus on the device in a zoomed in view.
b. It
sets the application window to full screen mode.
c. Both
a and b.
d. None
of the above.
Suppose
you want to add a new XML file named "colorDim" to your Android
project. How can you do so?
a. Right
Click on the project to which you want to add the new XML
file–>New–>Class–> Enter Name "colorDim.XML"–>Finish
b. Right
Click on the folder–>New–>Untitled xml file–>–> Enter
Name"colorDim.XML"–>Finish
c. Right
Click on the project to which you want to add the new XML file
–>New–>Android XMLFile–> Enter Name
"colorDim.XML"–>Finish
d. Right
Click on the folder–>New–>Class–>Enter Name "colorDim.XML"
–>Finish
State
whether the given statement is true or false.
OpenGL
is used only for writing 3D Graphics that are rendered on GPU (Graphics
Processing Unit).
a. True
b. False
Which
of the following devices can be used to run an Android application developed
using Eclipse?
I) Android Refractor
II) Android Emulator
III) ProGuard
IV) Android device
a. I
and IV
b. I,
II and III
c. II
and IV
d. All
of the above
e. II,
III and IV
Which
of the following data type(s) is/are used by Android?
a. Primitive
objects
b. Non
persistent objects
c. Both
a and b
d. None
of the above
Which
of the following is the correct way to retrieve a string instance named
"hello" from the application resource of Android by using its
resource id?
a. String
rID= getString(R.string.hello);
b. String
rID= getResources(R.string.hello);
c. String
rID= getString().getResources(R.string.hello);
d. String
rID= getResources().getString(R.string.hello);
Suppose
you want to retrieve a system resource string called "Yes" from
within an Activity class. Which of the following queries should you use to do
so?
a. String
getYes= Resource.getString().getSystem().(Android.R.string.Yes);
b. String
getYes= Resources.getSystem().getString(Yes);
c. String
getYes= Resources.getSystem().getString(Android.R.string.Yes);
d. String
getYes= Resources.getString.getSystem(Android.R.string.Yes);
The
Android operating system is based upon which of the following Kernel/s?
a. Mac
b. Linux
c. Solaris
d. All
of the above
Which
of the following adapters exposes data from a Cursor to a ListView widget?
a. BaseAdapter
b. AdapterView
c. BaseExpandableListAdapter
d. CursorAdapter
This
question is based upon the figure shown below
In
Eclipse, inside an Android project the style.xml file contain styles related to
element of project or application being developed. Which of the following icons
provide an option to display only the Style/Theme element of the project?
a. I
b. II
c. III
d. IV
e. None
of the above
Which
of the following code lines describes a map to associate a bitmap to each
character?
a. private
Map<Bitmap, Character> glyphs = new HashMap<Character, Bitmap>(62);
b. private
Map<Bitmap, Character> glyphs = new BitMap<Bitmap, Character>(62);
c. private
Map<Character, Bitmap> glyphs = new HashMap<Character, Bitmap>(62);
d. private
Map<Character, Bitmap> glyphs = new BitMap<Character, Bitmap>(62);
e. private
Map<Character, Bitmap> glyphs = new glyphs<Character, Bitmap>(62);
State
whether the following statement is true or false.
While
creating a new Android application using eclipse, we need to set the Android
version for "Minimum Required SDK" and "Compile With"
fields. Android version greater than or equal to Android 4.1 should be selected
for both the fields.
a. True
b. False