Elance Test Android Questions & Answers 2014

Elance Skill Test - Android Questions and Answers 2014

Q Android layouts are read from which type of file?

    xaml

    xml

    txt

    res

Q What is the official name of the Android 3.0 SDK?

    Gingerbread

    Froyo

    Donut

    Honeycomb

    Ice Cream Sandwich

Q What is the main hardware platform of Android?

    ARM architecture

    MIPS

    x86

    None of these

Q Every Android application runs in its own process...

    with its own instance of the Dalvik Virtual Machine.

    within a shared system wide instance of the Dalvik Virtual Machine.

    with its own instance of the Java Virtual Machine.

Q Which tag is used to add "Star Rating" in XML layout file

    RatingWidget

    RatingBar

    Stars

    Rating

Q You can retrieve the resources for your applications by using:

    android.app.getResources()

    android.content.pm

    android.content.getResources()

Q In which resource folder do we create an animation file ?

    anim

    raw

    values

    animation

    drawable

Q Android version 2.2 is better known as what?

    Eclair

    Gingerbread

    Ice-Cream Sandwich

    Froyo

Q How do you disable the scrollbars for a webview?

    <WebView android:layout_height="wrap_content" />

    all of these

    <WebView android:scrollbars="none" />

    <WebView android:layout_width="wrap_content" />

Q Which layout is deprecated since version 2.3?

    Table Layout

    Relative Layout

    Absolute Layout

    Frame Layout

Q The correct way to get pass string in an Intent is (where key and value are both string variables):

    intent.putValue(key,value);

    intent.putKey(key,value);

    intent.putExtra(key,value);

    intent.putString(key,value);

Q If your application needs to access information about the devices wi-fi networks, you need to specify:

    <manifest-permission ="android.permission.ACCESS_WIFI_STATE" />

    Both of these

    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />.

    None of these

Q True or False: The Android operating system is a multi-user Linux system in which each application is a different user.

    True

    False

Q Android uses what class to communicate a request for an action to be performed?

    Broadcast

    Activity

    Request

    Intent

    Service

Q In order to be notified of a device switching from landscape to portrait view, you should:

    Both of these

    Request changes via the android:configChanges="orientation" attribute for activities in your manifest file

    Override the onConfigurationChanged event

Q Fragments were added in what version of Android (not including the compatibility pack)?

    Version 3.2

    Version 2.3.4

    Version 3.1

    Version 2.1

    Version 3.0

Q What causes an Activity's onDestroy() method to be called.

    The Activity that launched this Activity called finishActivity()

    The Activity called finish().

    The Activity is paused or stopped and it's resources were needed by the operating system.

    All of these reasons.

Q What is the key used for an bundle extra parameter on a PendingIntent holding a location?

    public static final String KEY_STATUS_CHANGED

    public static final String KEY_PROVIDER_ENABLED

    public static final String KEY_PROXIMITY_ENTERING

    public static final String KEY_LOCATION_CHANGED

Q Relative layout has two types of orientations,vertical and horizantal

    false

    true

Q Which of these is NOT a Layout derived from the ViewGroup class?

    AbsoluteLayout

    RelativeLayout

    ListViewLayout

    LinearLayout

Q What is the primary license of Android?

    OSI

    Apache License

    MIT

    GPL

Q C2DM is deprecated and it was replaced by

    Polling

    GCM

    Tokudu

    APS

    GCS

Q Which of the following isn't a valid stage in an Activity's lifecycle?

    onPause

    onCreate

    onFinish

    onStop

    onStart

Q Which of the following was NOT a name used in any previous versions of Android (3.2)?

    Gingerbread

    Eclair

    Honeycomb

    Cannoli

Q A layout that organizes its children into a horizontal or vertical stack

    TableLayout

    LinearLayout

    FrameLayout

    RelativeLayout

Q What is an application component that can perform long-running operations in the background and does not provide a user interface?

    Broadcast receiver

    Activity

    Content-provider

    Service

Q What is the proper order of life cycle methods called when an Activity is first run?

    onCreate(), onRestart(), onResume()

    onCreate(), onStart(), onResume()

    onStart(), onResume, onCreate()

    onCreate(), onResume(), onStart()                                                                                      

    onStart(), onCreate(), onResume()

Q Who can submit applications to the Marketplace?

    Registered Android Market developers

    Anyone and everyone

    Only Google employees

    Only device manufacturers and their employees

Q If you wanted to store a name/value string pair for your Android application, which class would you use?

    android.content.Cookies

    android.content.Resources

    android.content.SharedPreferences

Q The Android SDK tools compile your application into an Android application (.apk file) which...

    contains all the information needed to install the application on an Android device.

    contains information needed by the Universal Mobile Installer to create the install package for Android devices.

    then has to be formatted for installation through the Android installer.

Q Which of these widgets is an input box for a user to enter text?

    TextView

    TextBox

    EditText

    Label

Q Which is NOT a default value used for a Toast length parameter?

    LENGTH_LONG

    LENGTH_SMALL

    LENGTH_SHORT

Q How do you request permissions for your application?

    <requires-permission> in the Android Manifest

    You do not need to request permissions for any application

    <uses-permission> in the Android Manifest

    Submit a request when you publish your application to the android market

    <request-permission> in the Android Manifest

Q Where would we specify which activity should launch first in our app

    Manifest file

    properties file

    All of the above

    Main Class file

Q If your application uses the camera on an Android powered device, the following line should be in your manifest file:

    <uses-feature android:name="android.hardware.camera" />

    <uses-feature="android.hardware.camera" />

    <uses-feature name="camera" />

Q In order to specify layouts so that they adapt to any screen size, specify dimensions in:

    Pixels

    Density-independent pixels

Q Which of the following is used to detect when a user clicks or taps on a button?

    OnTapListener

    OnClickDetecter

    OnClickListener

    OnTouchListener

Q Which of the following are different types of Android application components?

    services

    all of these

    activities

    none of these

Q What is the first method called in the Activity Lifecycle?

    onResume()

    onBegin()

    onCreate()

    onInit()

    onStart()

Q Which statement correctly changes content of a TextView named textLabel to show "Your Text"?

    textLabel.text = "Your Text";

    textLabel.text("Your Text");

    textLabel.setText("Your Text");

    textLabel = "Your Text";

Q Android relies on the Linux kernel for which of the following system services?

    Security

    Both security and network stack

    Network stack

    Neither security nor network stack

Q What is the name of component used to display web pages in the application?

    WebBrowser

    BrowserView

    WebView

    Browser

Q If I set min sdk version to be 8 for an app , on what version(s) will I NOT be able to run the app?

    12

    7

    10

    8

    14

Q The Android Manifest file has what extension?

    .jar

    .java

    .apk

    .xml

Q Do you need to buy an android developer account to start developing and testing applications on Android ?

    No

    Yes

Q Which Virtual Machine (VM) does the android system use?

    Dalvik

    VMLite

    KVM

    Erlang

Q Your Android application components are defined in the...

    AndroidManifest.xml file.

    AndroidManifest.pkg file.

    myApp.xml file.

Q What is the official website for Android programmers?

    developer.android.com

    stackoverflow.com/

    android.google.com

    anddev.org

    eclipse.org/android

Q What database is available for developers in Android?

    There is no available database

    SQL Server

    Oracle

    NoSQL

    SQLite

Q Which of the following are a function of the manifest file?

    all of these

    declare the level of user permissions required.

    declare the minimum API level required

Q Which event listener is used to handle when an Android device has changed orientation?

    PositioningEventListener

    OrientationEventListener

    DeviceOrientationEventListener

    LayoutEventListener

Q Android's main programming language is:

    JavaScripts

    C++

    Java

    VB-Script

Q Externalizing resources is an important part of application development because different resources are needed for:

    Different language versions of the application.

    Different devices.

    All of these

    None of these

Q Which of the following are versions of Android?

    Eclair

    Gingerbread

    Froyo

    All of these

Q What are some examples of direct descendants of the android.view object?

    Neither of these

    ProgressBar

    ViewGroup

    Both of these

Q What package encompasses the interactive UI components of Android such as buttons and text fields?

    android.view.ViewGroup

    android.widget

    android.view

Q What kernel is Android based on?

    Linux Kernel

    XNA

    Mach Kernel

    NT Kernel

Q Which of these ListAdapter subclasses is not a direct subclass of BaseAdapter?

    ArrayAdapter

    SimpleAdapter

    HeaderViewListAdapter

    CursorAdapter

Q Which of the following allows you to instantinate a LocationManager class?

    LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);

    LocationManager lm = (LocationManager)Runtime.getSystemServiceInstance

(Context.LOCATION_SERVICE);

    LocationManager lm = new LocationManager(Context.LOCATION_SERVICE);

    LocationManager lm = (LocationManager)getSystem().getService(Context.LOCATION_SERVICE);

    LocationManager lm = (LocationManager)SystemServiceFactory.createSystemService(Context.LOCATION_SERVICE);

Q Which subclass of a Preference class displays a list of entries as a dialog?

    Both of these

    MultiSelectListPreference

    ListPreference

    None of these

Q When an asynchronous task is executed, the task goes through several steps, what option isn't a step of an asynchronous task.

    onPostExecute()

    onBackground()

    onPreExecute()

    onProgressUpdate()

Q What is the Sub Class of TextView...?

    Image Button

    All of These

    EditText

    Radio Button

    Button

Q What is the API version code for the Android 3.2 SDK?

    9

    14

    15

    11

    13

Q Android applications can "borrow" functionality from other applications by using...

    application lifecyle methods

    content Provider system

    intent objects

Q Which programming language is used to develop application for the Android platform?

    C#

    Java

    JavaScript

Q Which of the following is a public constructor for canvas?

    canvas(Context context)

    canvas(int color)

    canvas(AttributeSet set)

    canvas(Bitmap bitmap)

Q Fragments are independent from Activities

    True

    False

Q Maximum size of an android app?

    40mb

    20mb

    100mb

    4 gb

    1.3 gb

Q What manifest uses-configuration should your application use if your application requires a finger activated touch screen on the device.

    <uses-configuration android:reqTouchScreen="finger" /> must be in your manifest.

    <uses-configuration android:reqTouchScreen /> must be in your manifest.

    <uses-configuration android:reqNavigation="finger" /> must be in your manifest.

Q Which callbacks in AsyncTask gets executed on main thread

    doInBackground onPostExecute onProgressUpdate

    onProgressUpdate

    doInBackground

    both onPostExecute and onProgressUpdate

    onPostExecute

Q If you have a fragment which displays a ListViewContaining query results, which API would you use to bring the data over to the device asynchronously?

    android.app.LocalActivityManager

    android.app.LoaderManager

    android.app.ListActivity

Q You should extend which class when using/creating a database?

    SQLiteOpenHelper

    SQLiteDatabasehelper

    SQLiteDatabase

    None of the above

    SQLiteHelper

Q What permission is required for your application to use the device's vibrate hardware?

    android.permission.VIBRATE

    android.hardware.permission.VIBRATE

    android.security.VIBRATE

    android.hardware.VIBRATE

    android.permission.hardware.VIBRATE

Q Android library functions are written of ...?

    C#

    Python

    C/C++

    PHP

    Java

Q Which of these Activity lifecycle events is called when the activity is about to become visible to the user.

    onStart()

    onCreate()

    Resume()

    Start()

    onResume()

Q You can control process usage in your Android application by...

    both of these

    moving your components up in the process lifecycle hierarchy.

    using the android:process attribute on the specific component defined in the manifest.

    neither of these

Q AppWidgetProvider is a subclass of

    BroadcastReceiver

    Activity

    AppWidgetHost

    Intent

    Service

Q What is a benefit of deodexing?

    Custom themes

    Remove files

    Install custom apps

    Speed boost

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