Android Multiple Choice Question and Answers | online Test |

Android Multiple Choice Questions and Answers

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1. When contentProvider would be activated?

 A. using Intent

 B. using SQLite

 C. using ContentResolver

 D. none of the above

2. Parent class of Activity?

 A. object

 B. context

 C. activityGroup

 D. contextThemeWrapper

3. Once installed on a device, each Android application exists in_______?

 A. device memory

 B. external memory

 C. security sandbox

 D. none of the above

4. What are the Direct subclasses of Activity?

 A. ListActivity

 B. ActivityGroup

 C. FragmentActivity

 D. All the above

5. Which is the screen densities in Android?

 A. low density

 B. medium density

 C. extra high density

 D. all of the above

6. You can shut down an active

 A. onClick

 B. onStar

 C. finish()

 D. none of the 

7. Which one is ANR in android?

 A. Dialog box

 B. Application Not Responding

 C. Android Not Responding

 D. None

8. Which of the following is Layouts in android?

 A. Frame Layout

 B. Linear Layout

 C. Relative Layout

 D. All of the above

9. How many ways to start services?

 A. started

 B. bound

 C. both a & b

 D. messenger

10. What is/are the JSON elements in android?

 A. integer, boolean

 B. boolean

 C. null

 D. Number, string, boolean, null, array and object.

11. If you need your interface to work across different processes, you can create an interface for the service

with a ________?

 A. Binder

 B. Messenger

 C. AIDL

 D. Either b or c

12. If you want share the data across the all applications ,you should go for?

 A. Shared Preferences

 B. Content provider

 C. Internal Storage

 D. SQLite Databases

13. Which of the following is Dialog classes in android?

 A. AlertDialog

 B. ProgressDialog

 C. DatePickerDialog

 D. All of the above

14. When the activity is not in focus, but still visible on the screen it is in?

 A. running state

B. stopped state

 C. paused state

 D. destroyed state

15. The XML file that contains all the text that your application uses.

 A. stack.xml

 B. text.xml

 C. strings.xml

 D. string.java

16. Android tries to _____low-level components, such as the software stack, with interfaces so that vendor-

specific code can be managed easily.

 A. confound

 B. absract

 C. modularize

 D. compound

17. What is the name of the program that converts Java byte code into Dalvik byte code?

 A. Android Interpretive Compiler (AIC)

 B. Dalvik Converter

 C. Dex compiler

 D. Mobile Interpretive Compiler (MIC)

18. The Emulator is identical to running a real phone EXCEPT when emulating/simulating what?

 A. Telephony

 B. Applications

 C. Sensors

 D. The emulator can emulate/simulate all aspects of a smart phone.

19. Which of these are not one of the three main components of the APK?

 A. Dalvik Executable

 B. Resources

 C. Native Libraries

 D. Webkit

20. While developing Android applications, developers can test their apps on

 A. Emulator included in Android SDK

 B. Physical Android phone

 C. Third-party Emulators

 D. All the above

21. Which piece of code used in Android is not open source?

 A. Keypad driver

 B. WiFi driver

 C. Audio driver

 D. Power management

22. What year was the Open Handset Alliance announced?

 A. 2005

 B. 2006

 C. 2007

 D. 2008

23. Creating a UI in Android requires careful use of

 A. Java and SQL

 B. XML and Java

 C. XML and C++

 D. Dream weaver

24. Status data will be exposed to the rest of the Android system via

 A. Intents

 B. A content provider

 C. Network receivers

 D. Altering permissions

25. . What is the driving force behind an Android application and that ultimately gets converted into a Dalvik

executable?

 A. Java source code

 B. R-file.

 C. The emulator

 D. The SDK

26. Intents are used to __________

 A. are messages that are sent among major building blocks

 B. trigger activities to being, services to start or stop, or broadcast

 C. are asynchronous

 D. all of those

27. What built-in database is Android shipped with?

 A. SQLite

 B. Apache

 C. MySQL

 D. Oracle

28. Which of the following is NOT a state in the lifecycle of a service?

 A. Starting

 B. Running

 C. Destroyed

 D. Paused

29. What does the .apk extension stand for?

 A. Application Package

 B. Application Program Kit

C. Android Proprietary Kit

 D. Android Packaging Kit

30. What is contained within the manifest xml file?

 A. The permissions the app requires

 B. The list of strings used in the app

 C. The source code

 D. All the above

31. What is contained within the Layout xml file?

 A. Orientations and layouts that specify what the display looks like

 B. The permissions required by the app

 C. The strings used in the app

 D. The code which is compiled to run the app

32. The ___________ file specifies the layout of your screen?

 A. Layout file

 B. Manifest file

 C. Strings XML

 D. R file

33. The android OS comes with many useful system services, which include processes you can easily ask for

things such as your.

 A. Location

 B. Sensor Readings

 C. WiFi Hot Spots

 D. All of these

34. What is an Activity?

 A. A single screen the user sees on the device at one time

 B. A message sent among the major building blocks

 C. A component that runs in the background without any interface

 D. Context referring to the application environment

35. To create an emulator, you need an AVD. What does it stand for?

 A. Android Virtual Display

 B. Android Virtual Device

 C. Active Virtual Device

 D. Application Virtual Display

36. Which of the following are not a component of an APK file?

 A. Resources

 B. Native Libraries

 C. Dalvik executable

 D. All of these are components of the APK

37. What runs in the background and does not have any UI components?

 A. Intents

 B. Content Providers

 C. Services

 D. Applications

38. What operating system is used as the base of the Android stack?

 A. Linux

 B. Windows

 C. Java

 D. XML

 

39. What is a thread in android?

 A. Same as services

 B. Background activity

 C. Broadcast receiver

 D. Independent dipatchable unit.

 

40. Android is licensed under which open source licensing ?

 A. Gnu GPL

 B. OSS

 C. Apache/MIT

 D. Sourceforge

41. Which of the following are UI elements that you can use in a window in an Android application?

 A. TextBox

 B. TextView

 C. EditText

 D. Both b&c

 

42. Which of the following are valid features that you can request using requestWindowFeature?

 A. FEATURE_NO_TITLE

 B. FEATURE_NO_ICON

 C. FEATURE_RIGHT_ICON

 D. Both a& c

 

43. The R file is a(an) generated file

 A. Automatically

 B. Manually

 C. Emulated

 D. none of the above

 

44. What is Android-dx?

 A. A command line tool to create Android project files

 B. A framework to create unit tests for Android projects

 C. A tool to generate Android byte code from .class files

 D. A resource editor to create user interface for Android applications

45. Immediate base class for activity and services

 A. CONTEXT

 B. APPLICATION CONTEXT

 C. CONTEXTAPP

 D. ONCREATE

 

46. Which of the following can be accomplished by using the TelephoneNumberUtil class?

 A. Save a phone number to the contacts in the phone device

 B. Retrieve a phone number from the contacts in the phone device

 C. Delete a phone number from the contacts in the phone device

 D. Format an international telephone number

 

47. Which of the following can you use to add items to the screen menu?

 A. Activity.onCreateOptionsMenu

 B. Activity.onCreate

 C. Activity.onPrepareOptionsMenu

 D. Both a&b

 

48. Which of the following can you use to display a progress bar in an Android application?

 A. ProgressBar

 B. ProgressDialog

 C. ProgressView

 D. Both a&b

 

49. What are return types of startActivityForResult() in android?

 A. RESULT_OK

 B. RESULT_CANCEL

 C. RESULT_CRASH

 D. BOTH A AND B

 

50. Which of the following is the parent class for the main application class in an Android application that has a user interface?

 A. MIDLet

 B. AndroidApp

 C. Activity

 D. AppLet

 

51. Which of the following is/are appropriate for saving the state of an Android application?

 A. Activity.onFreeze()

 B. Activity.onPause()

 C. Activity.onStop()

 D. Activity.onDestroy()

52. Which of the following should be used to save the unsaved data and release resources being used by an

Android application?

A. Activity.onStop()

 B. Activity.onPause()

 C. Activity.onDestroy()

 D. Activity.onShutdown

 

53. What is the purpose of the ContentProvider class?

 A. To play rich media content files

 B. To create and publish rich media files

 C. To share data between Android applications

 D. To access the global information about an application environment

 

54. Which of the following would you have to include in your project to use the SimpleAdapter class?

 A. import android.content

 B. import android.widget

 C. import android.database

 D. import android.database.sqlite

 

55. Which of the following can be used to bind data from an SQL database to a ListView in an Android

application

 A. SimpleCursor

 B. SimpleCursorAdapter

 C. SimpleAdapter

 D. SQLiteCursor

 

56. What Activity method you use to retrieve a reference to an Android view by using the id attribute of a resource XML?

 A. findViewByReference(int id);

 B. findViewById(int id)

 C. retrieveResourceById(int id)

 D. findViewById(String id)

 

57. Which of the following is NOT a valid usage for Intents?

 A. Activate an Activity

 B. Activate a Service

 C. Activate a Broadcast receiver

 D. Activate SQLite DB Connection.

 

58. What is the name of the folder that contains the R.java file?

 A. src

 B. res

 C. bin

 D. gen

 

59. What is a correct statement about an XML layout file?

 A. A layout PNG image file

 B. A file used to draw the content of an Activity

 C. A file that contains all application permission information

 D. A file that contains a single activity widget.

 

60. Which file specifies the minimum required Android SDK version your application supports?

 A. main.xml

 B. R.java

 C. strings.xml

 D. AndroidManifest.xml

61. What is the parent class of all Activity widgets?

 A. ViewGroup

 B. Layout

 C. View

 D. Widget

62. What is the name of the class used by Intent to store additional information?

 A. Extra

 B. Parcelable

 C. Bundle

 D. DataStore

 

63. Which is not included in the Android application framework?

 A. WindowManager

 B. NotificationManager

 C. DialerManager

 D. PackageManager

 

64. What Eclipse plugin is required to develop Android application?

 A. J2EE

 B. Android Software Development Kit

 C. Android Development Tools

 D. Web Development Tools

 

65. Which of these files contains text values that you can use in your application?

 A. AndroidManifest.xml

 B. res/Text.xml

 C. res/layout/Main.xml

 D. res/values/strings.xml

 

66. What does the Android project folder res contain?

 A. Java Activity classes

 B. Resource files

 C. Java source code

 D. Libraries

 

67. . Which of the following Java call-back method is invoked when a view is clicked?

 A. Detector

 B. OnTapListener

 C. OnClickDetector

 D. OnClickListener

 

68. Which of the following Activity life-cycle methods is called once the activity is no longer visible?

 A. onStop

 B. onPause

 C. onDestroy

 D. onHide

69. The DalvikVM core libraries are a subset of which of the following?

 A. Java ME

 B. Java SE

 C. Java EE

 D. JAX-WS

 

70. Which of the following is not a ContentProvider provided natively by android

 A. The contacts list

 B. The telephone log

 C. The bookmarks

 D. The application list

 

71. Which manifest file permission you should add to allow your application to read the device address book?

 A. READ_ADDRESS_DATA

 B. READ_PHONE_STATE

 C. READ_PHONE_CONTACTS

 D. READ_CONTACTS

 

72. You can create a custom view by extending class:

 A. android.widget.View

 B. android.widget.LinearLayout

 C. android.view.View

 D. android.content.Context

 

73. Which of the following Android View sub-classes uses the WebKit rendering engine to display web

pages?

 A. PageView

 B. WebView

 C. MapView

 D. HttpClient

 

74. Which of the following methods updates a ListView when an element is added to the data set?

 A. notify( )

 B. notifyAll( )

 C. notifyDataSetChanged( )

 D. notifyDataSetInvalidate( )

 

75. The values of which of the following classes cannot be mapped in a Bundle object?

 A. Parcelable

 B. String

 C. ArrayList

 D. Context

 

76. Which among these are NOT a part of Android native libraries?

 A. Webkit

 B. Dalvik

 C. OpenGL

 D. SQLite

 

77. __________ is the recommended way for sharing data across packages?

 A. Content providers

 B. Data persistence

 C. Messaging

 D. None

 

78. __________ stores data such as missed calls, call details and so on

 A. Browser

 B. Call log

 C. Contacts

 D. None

 

79. Which permissions are required to get a location in android?

 A. ACCESS_FINE and ACCESS_COARSE

 B. Internet permission

 C. WIFI permission

 D. GPRS permission

 

80. What is DDMS in android?

 A. Dalvik Memory Server

 B. Distributed Denial Memory Services

 C. Dalvik Debug Monitor Server

 D. None

 

81. The _________ class performs the cursor query on a background thread and hence does not block the application UI.

 A. SimpleCursorAdapter

 B. CursorLoader

 C. CursorAdapter

 D. None

 

82. __________ views are commonly used views such as the TextView, EditText and Button Views

 A. Basic View

 B. Picker view

C. Frame view

 D. None

 

83. ___________ are the views that enable users to select from a list, such as Date and Time picker views.

 A. Picker view

 B. Basic view

 C. List view

 D. None

 

84. _____________ are views that display a long list of items.

 A. Specialised fragments

 B. List view

 C. Frame view

 D. None

 

85. In order to automatically adjust to fit the content, the layout_height must be set to __________

 A. wrap content

 B. fill parent

 C. X and Y coordinate

 D. none

 

86. The _______ attribute is an identifier for a view so that it may later be retrieved using the

View.findViewById method.

 A. id

 B. X axis

 C. Y axis

 D. None

 

87. What is JSON in android?

 A. Java Script Object Native

 B. Java Script Oriented Notation

 C. Java Script Object Notation

 D. None

 

88. What is singleton class in android?

 A. Class that can create only one object

 B. Anonymous class

 C. Java class

 D. Manifest file

 

89. . ___________ is an object carrying a message from one component to another component with in the application.

 A. Intent

 B. Filters

 C. Activity

 D. Services

 

90. _________ is a view group that aligns all children in a single direction, vertically or horizontally.

 A. Linear layout

 B. Relative layout

 C. Table layout

 D. Absolute layout.

 

91. ___________ is a view group that displays child views in relative positions

 A. Table layout

 B. Linear layout

 C. Relative layout

 D. None

 

92. ___________ layout enables you to specify the exact location of the children

 A. Frame

 B. List

 C. Table

 D. Absolute

93. ______________ is designed to block out an area on the screen to display a single item

 A. Frame layout

 B. Table layout

 C. Linear layout

 D. Absolute layout.

 

94. An _______ actually bridges between UI components and the data source that fill data into UI component.

 A. Cursor

 B. Adapter

 C. Database

 D. None

 

95. _________ is a pre defined subclass of textview that includes rich editing capabilities.

 A. Button

 B. Textview

 C. Edittext

 D. None

 

96. ___________ is used when presenting users with a group of selectable options that are not mutually

exclusive.

 A. Check Box

 B. Toggle button

 C. Radio button

 D. None.

97. The _________ view provides visual feedback about some ongoing tasks, such as performing a task in a background.

 A. Spinner

 B. Image button

 C. Toggle button

 D. Progress bar

 

98. Which of the following is the most resource hungry part of dealing with Activities on Android

 A. Closing an app

 B. Suspending an app

 C. Opening a new app

 D. Restoring the most recent app

 

99. Which component is not activated by an Intent?

 A. activity

 B. services

 C. content provider

 D. broadcast receiver

 

100. Which of the important device characteristics that you should consider as you design and develop your application?

 A. Screen size and density

 B. Input configurations

 C. Device features

 D. All of the above

 

101. Which are the screen sizes in Android?

 A. Small

 B. Normal

 C. Large

 D. All of the above

 

102. How to stop the services in android?

 A. onDestory()

 B. finishActivity()

 C. stopSelf()

 D. None of the above

 

103. What is the difference between Activity context and Application Context?

 A. The Activity instance is tied to the lifecycle of an Activity. while the application instance is tied to the

lifecycle of the application

 B. The Activity instance is tied to the lifecycle of the application, while the application instance is tied to the lifecycle of an Activity.

 C. The Activity instance is tied to the lifecycle of the Activity, while the application instance is tied to the lifecycle of an application.

 D. None of the above

 

104. What is the time limit of broadcast receiver in android?

 A.15 seconds

 B.5 seconds

C. 1 hour

 D.10 seconds

 

105. What is AIDL in android?

 A. Android Interface Design Language

 B. Android Interface Development Language

 C. Android Interface Definition Language

 D. Android Interface Debug Language

 

106. If you want share the data accross the all applications ,you should go for?

 A. Shared Preferences

 B. Internal Storage

 C. SQLite Databases

 D. content provider

 

107. Difference between android api and google api?

 A. The google API includes Google Maps and other Google-specific libraries. The Android one only includes core android libraries.

 B. The google API one only includes core android libraries. The Android includes Google Maps and other Google-specific libraries.

 C. None of the above.

 D. Both a and b

108. ________ sets the gravity of the view or layout in its parent?

 A. android:gravity

 B. android:layout_gravity

 C. android:weight

 D. android:orientation

 

109. How to store heavy structured data in android?

 A. Shared Preferences

 B. Cursor

 C. SQlite database

 D. Not possible

 

110. Which features are considered while creating android application?

 A. Screen Size

 B. Input configuration

 C. Platform Version

 D. All of the above

 

111. What are the debugging techniques available in android?

 A. DDMS

 B. Breaking point

 C. Memory profiling

 D. None of the above.

 

112. What does httpclient.execute() returns in android?

 A. Http entity

 B. Http response

 C. Http result

 D. None of the above

 

113. What is fragment life cycle in android?

 A. onReceive()

 B. onCreate()

 C. onAttach()

 D. None of the above

 

114. What is transient data in android?

 A. Permanent data

 B. Secure data

 C. Temporary data

 D. Logical data

115. How to pass the data between activities in Android?

 A. Intent

 B. Content Provider

 C. Broadcast receiver

 D. None of the Above

 

116. What is the difference between margin and padding in android layout?

 A. Margin is specifying the extra space left on all four sides in layout

 B. Padding is used to offset the content of a view by specific px or dp

 C. Both A and B are correct

 D. None of the above

117. What is the life cycle of broadcast receivers in android?

 A. send intent()

 B. onRecieve()

 C. implicitBroadcast()

 D. sendBroadcast()

118. What is the application class in android?

 A. A class that can create only an object

 B. Anonymous class

 C. Java class

 D. Base class for all classes

 

119. What is a context in android?

 A. It is an interface to store global information about an application

 B. It is used to create new components.

 C. Android has two contexts, those are getContext and getApplicationContext

D. All of the Above

 

120. What is android view group?

 A. Collection of views and other child views It is used to pass the data between activities

 B. It will fire at a future point of time.

 C. Base class of building blocks

 D. Layouts

 

121. What is splash screen in android?

 A. Initial activity of an application

 B. Initial service of an application

 C. Initial method of an application

 D. Initial screen of an application

 

122. To send an SMS message programmatically, you use the _________________ class.

 A. SmsManager

 B. scAddress

 C. sendTextMessage()

 D. SMSActiviy

 

123. What are Five Arguments to the sendTextMessage() method

 A. destinationAddress

 B. scAddress

 C. deliveryIntent

 D. all the above

 

124. PendingIntent objects to monitor the status of the _________________ process

 A. message-sending

 B. message-receiving

 C. sendTextMessage()

 D. smsManager

 

125. You can deploy the apk files in emulators and devices using the __________

 A. adb.exe

 B. platform-tools

 C. adb -s emulator

 D. none of the above

 

126. PendingIntent objects are created in ______________ method

 A. onstart()

 B. oncreate()

 C. finish()

 D. onReceive()

 

127. . In the onResume(), you will create and receive _________________

 A. deliveredPI

B. PendingIntent

 C. message

 D. BroadcastReceiver

 

128. Within each BoardcastReceiver you override the __________ method to get the current result code.

 A. onReceive()

 B. onstart()

 C. oncreate()

 D. finish()

 

129. Using _______________ objects, you will get notified of message status

 A. BoardcastReceiver

 B. Context

 C. PendingIntent

 D. None

 

130. You can send SMS to multiple recipients by simply separating each phone number with a

 A. period

 B. semi-colon

 C. comma

 D. ampersand

 

131. To send message to the emulator, use _______________

 A. Console

 B. Thread

 C. Logcat

 D. DDMS

 

132. BoardcastReceiver enables your application to handle _____________ raised by other application.

 A. Listener

 B. flags

 C. event

 D. functions

133. Each SMS is stored in an object array in the _____ format

 A. PDU

 B. text

 C. ascii

 D. machine language

 

134. To ________________the content of message, you use the static createFromPdu() message

 A. insert

 B. extract

 C. modify

 D. delete

 

135. How many broadcast receivers are available in android?

 A. sendIntent()

 B. onRecieve()

 C. implicit Broadcast()

 D. sendBroadcast(), sendOrderBroadcast(),and sendStickyBroadcast().

 

136. On which thread, services work in android?

 A. Worker thread

 B. Main thread

 C. Own thread

 D. None

 

137. ___________________ method enables to bind the data.

 A. onDestroy()

 B. onStartCommand()

 C. onBind()

 D. onStart()

 

138. Which method give access to member and methods inside the service?

 A. onBind()

 B. StartService()

 C. StopService()

 D. none

 

139. In the following,which will help you to run the service until it is explicitly stopped.

 A. CONTINUE_STICKY

 B. STOP_STICJY

 C. START_STCIKY

 D. KILL_STICKY

 

140. If you want your service available to other applications, you can always add an _______________

 A. intent filter

 B. Intent

 C. getBaseContext()

 D. none of the above

141. _____________ class will execute task asynchouronously with your service.

 A. SyncTask

 B. AsyncTask

 C. Both a and b

 D. None of the above

 

142. All layout classes are direct sub classes of________

 A. java.lang.object

 B. android.widget

 C. android.view.Viewgroup

 D. android.view.View

143. What is ADB in android?

 A. Application Development Base

 B. Android Developer Base

 C. Android Development Base

 D. Android Debug Bridge

144. What is GCM in android?

 A. Google Message Pack

 B. Google Count Messaging

 C. Google Cloud Messaging

 D. None of the above

145. _________________ class is a base class for service that handles asynchronous requests.

 A. Intent Service

 B. StartService

 C. StopService

 D. None of the above

 

146. In java you cannot directly cast an array from one type to another.

 A. True.

 B. False

 C. Applies in all conditions

 D. Applies in certain conditions only

 ANSWER: A

147. To perform repeated tasks,we use _____________ class.

 A. Timer

 B. Post

 C. Intent Service

 D. onBind

 ANSWER: A

148. The android:versionCode attribute represents the ___________ number of your application

 A. Version

 B. Application

 C. VersionCode

 D. None of the above

 ANSWER: A

149. _________________ contains the versioning information that is visble to user.

 A. VersionCode

 B. Version Name

 C. Icon

 D. Label

 ANSWER: B

150. ________________ attributes specifies the name of your application

 A. Label

 B. versionCode

C. versionName

 D. None of the above

 ANSWER: A