Question 1
Question
¿Cuales son las capas que componen Android ?
Answer
-
Applications, SDK Framework, Linux Kernel, Libraries y Android Runtime
-
Applications, Application Framework, Linux System, Libraries y Android Runtime
-
Applications, Application Framework, Linux Kernel, Libraries y Android Runtime
-
Applications, Application Framework, Linux Kernel, Core Libraries y Android Runtime
Question 2
Question
¿Cuales son los elementos que conforman el Application Framework?
Answer
-
Window Manager, Notification Manager, Activity Manager, Telephony Manager, Location Manager y View System.
-
Window System, Notification Manager, Activity Manager, Telephony Manager, Location Manager y View System.
-
Window Manager, Notification Manager, Activity Manager, Home Manager, Location Manager y View System.
-
Window Manager, Notification Manager, Activity Manager, Telephony Manager, Location Manager y View State.
Question 3
Question
¿Que elementos integran las "Libraries"?
Answer
-
SQLite, Surface Manager, Webkit, Core Libraries, Dalvik VM, SSL, SGL y Media Framework.
-
SQLite, Surface Manager, Webkit, Core Libs, Dalvik VM, SSL, SGL y Media Framework.
-
SQLite, Surface Manager, Webkit, Core Libs, Malvin VM, SSL, SGL y Media Framework.
-
SQLite, Surface Manager, Webkit, Core Libs, Dalvik VM, SSL, SGL y SDK Framework.
Question 4
Question
¿Cuales son los elementos que componen la capa "Linux Kernel"?
Answer
-
1.- Power Management
2.- Camera driver
3.- Wifi driver
4.- Audio driver
5.- Bluetooth driver
6.- Keypad driver
7.- USB driver
8.- Display driver
-
1.- Power System
2.- Camera driver
3.- Wifi driver
4.- Audio driver
5.- Bluetooth driver
6.- Keypad driver
7.- USD driver
8.- Display driver
-
1.- Power Management
2.- Camera driver
3.- Wifi driver
4.- Audio driver
5.- Bluetooth driver
6.- Keypad driver
7.- USD driver
8.- Display driver
-
1.- Power Management
2.- Camera driver
3.- Wifi driver
4.- Audio driver
5.- Bluetooth driver
6.- Keypad driver
7.- USD driver
8.- View driver
Question 5
Question
_____________ actua como una capa de abstraccion entre el hardware y el resto del software.
Answer
-
Libraries
-
Linux Kernel
-
Application Framework
-
Android Runtime
Question 6
Question
_____________ es responsable del estable rendimiento de varios componentes. Se encarga de manejar el acceso a los distintos procesos que comprenden capas de graficos 2D y 3D y es el responsable del procesamiento de media framework. P. e. grabacion y resproducción de la mayoria de la multimedia y de archivos estaticos de imagen, asi tambien como el soporte de fuentes, almacenamiento de datos y navegadores web.
Answer
-
Linux kernel
-
Libraries C/C++
-
Application Framework
-
Android Runtime
Question 7
Question
Es el sucesor del Dalvik Virtual Machine (DVM)
Question 8
Question
Fue diseñado basado en el JVM especificamente para Android que corre en un ambiente limitado, donde la limitacion en bateria, CPU, memoria y almacenamiento de datos es su preocupación. En lugar de leer un .jar , este lee archivos .dex. La optimizacion byte-code realizada es mas eficiente para correr procesos pequeños. Su nucleo de librerias estan escritas en Java y contienen una coleccion de clases, utilidades, I/O y otras herramientas.
Answer
-
Linux Kernel
-
Android Runtime
-
Libraries
-
Application Framework
Question 9
Question
Esta escrito en lenguaje Java y se compone de una coleccion de librerias de Java que las aplicacions de Android usan. Se compone entre otros del Activity Manager, Package Manager, Notification Manager, Telephony Manager, entre otros.
Answer
-
Linux Kernel
-
Android Runtime
-
Application Framework
-
Libraries
Question 10
Question
Libreria del SDK de Android que provee las principales interfaces graficas de usuario y permite su iteraccion con el UI.
Answer
-
android.view
-
android.util
-
android.widget
-
android.app
Question 11
Question
Libreria del SDK de Java que contiene elementos graficos de iteraccion con el usuario (GUI) para usarlos en la pantalla de la aplicación. Contiene bUilt-in views listos para usarlos sobre la pantalla.
Answer
-
android.view
-
android.widget
-
android.util
-
android.webkit
Question 12
Question
Libreria del SDK de Android que contiene clases para formateo de cadenas y convertidores de XML.
Answer
-
android.util
-
android.widget
-
android.app
-
android.webkit
Question 13
Question
Libreria del SDK de Android que meneja el acceso a datos. Parte de esta libreria es la clase "Context" el cual es una interfaz que engloba informacion acerca del ambiente de la aplicacion y la provista por el sistema Android. Esta permite el acceso especifico a recursos y clases.
Answer
-
android.util
-
android.widget
-
android.database
-
android.content
Question 14
Question
Libreria del SDK de Android el cual provee acceso a componentes de niveles altos, las clases Activity y Service son parte de este.
Answer
-
android.util
-
android.widget
-
android.app
-
android.webkit
Question 15
Question
Libreria del SDK de Android el cual provee facil accedo a Proveedores de Contenido basicos tales como contactos y base de datos del calendario.
Answer
-
android.content
-
android.app
-
android.webkit
-
android.provider
Question 16
Question
¿Cuales son los componentes de una aplicacion Android?
Answer
-
Activities, Services, Content Provider y Broadcast Receivers
-
Activities, Widget, Content Provider y Broadcast Receivers
-
Activities, Services, Content Filter y Broadcast Receivers
-
Activities, Views , Content Provider y Broadcast Receivers
Question 17
Question
Componente de Android que administra y provee bases de datos de la aplicación.
Answer
-
Antivity
-
Services
-
Content Provider
-
VIew
Question 18
Question
What method you should override to use Android Menu system?
Answer
-
onCreateOptionsMenu()
-
onCreateMenu()
-
onMenuCreated()
-
onCreateContextMenu()
Question 19
Question
What Activity method you use to retrieve a reference to an Android view by using the id attribute of a resource XML?
Question 20
Question
Which of thefollowing is not an Android component (i.e.a point which the system can enter your application)?
Answer
-
Service
-
Activity
-
Layout
-
Content Provider
Question 21
Question
Which of the following in NOT a valid usage for Intents?
Question 22
Question
Which of the following is not a valid Android resource file name?
Answer
-
mylayout.xml
-
myLayout.xml
-
my_layout.xml
-
mylayout1.xml
Question 23
Question
Which of these is not defined as a process state?
Answer
-
Non-visible
-
Visible
-
Foreground
-
Background
Question 24
Question
Which file specifies the minimun required Android SDK version your apllication supports?
Answer
-
main.xml
-
R.java
-
strings.xml
-
AndroidManifest.xml
Question 25
Question
Whats the parent class of all Activity widgets?
Answer
-
ViewGroup
-
Layout
-
View
-
Widget
Question 26
Question
Whats the name of the class used by Intent to store additional information?
Answer
-
Extra
-
Parceceable
-
Bundle
-
DataStore
Question 27
Question
Which of these files contains text values that youcan use in your apllication?
Answer
-
AndroidManifest.xml
-
tes/Text.xml
-
res/layout/Main.xml
-
res/values/strings.xml
Question 28
Question
What does the Android project folder "res/" contain?
Answer
-
Java Antivity classes
-
Resource files
-
java source code
-
Libraries
Question 29
Question
What does this code do?
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setData(android.net.Uri.parse("http://www.androidatc.com"));
startActivity(intent);
Question 30
Question
Which of the following Activity life-cycle methods is called once the activity is no longer visible?
Answer
-
onStop
-
onPause
-
onDestroy
-
onHide
Question 31
Question
Which of the following is a correct Android Manifest statement?
Answer
-
<uses-permission android:name="android.Internet"/>
-
<uses-permission android:name="android.Internet"></uses-permission>
-
<uses-permission android:name="android.permission.Internet">
-
<uses-permission android:name="android.permission.Internet"/>
Question 32
Question
Which of the following is true attribute
android:windowSoftInputMode
of the <activity> tag in file AndroidManifest.xml?
Answer
-
It specifies wheter the window is in full screen or not
-
it adjust how the main window of the activity interacts with keyboard
-
it adjust how the window should be launched
-
it adjust the window orientatio
Question 33
Question
What does the folloeingcode achieve?
Intent intent = new Intent ( FirstActivity.this, SeconActivity.class);
StartActivityForResult(intent);
Answer
-
Starts a browser activity
-
Starts a subactivity
-
Starts an activity service
-
Sends result to another activity
Question 34
Question
When using an implicit intent, what process does the system use to know what to do with it_
Answer
-
Intent resolution
-
Intent declaration
-
Intent overloading
-
Intent transition
Question 35
Question
Which of the following is NOT true about the MenuItem interface?
Answer
-
The MenuItem instante will be returned by Menu class add(...) method
-
MenuItem clan decide the Intent issued when clicking menu components
-
MenuItem can display either an icon or text
-
MenuItem can set a checkbox
Question 36
Question
Which is the correct explanation of ListView?
Answer
-
Its necessary to use ListView as a set with ListActivity
-
You cannot use a ListView when is no information to be displayed
-
When displaying a list od Stings using an ArrayAdapter class in ListView, you must save the value in an Arraylist
-
ListView has a function to display a list od uniquely defined Views other than TextView
Question 37
Question
Which of the following is incorrect avbout the Toast class?
Answer
-
You cannot set a custom layout for a Toast
-
A Toast can only create by an Activity class
-
There is no need to close or hide a toast, since it closes automatically
-
A Toast is displayed for only one of the following periods: Toast.LENGTH_SHORT od Toast.LEGTH_LONG
Question 38
Question
Which of the following is not a ContentProvider provided natively by Android?
Answer
-
The contact list
-
The telephone list
-
The bookmarks
-
The application list
Question 39
Question
Which of the following tools creates cretificates for signing Andrpod applications?
Answer
-
adb
-
logcat
-
keytool
-
certgen
Question 40
Question
Which manifest file permission you should add to allow your application to read the device's address book?
Answer
-
READ_ADDRESS_DATA
-
READ_PHONE_STATE
-
READ_PHONE_CONTACTS
-
READ_CONTACTS
Question 41
Question
You can create a custom view by extending class
Question 42
Question
In which Activity life-cycle method you should do all of your normal static set up such as: creating views and bind data to lists?
Answer
-
onResume()
-
onStart()
-
onCreate()
-
onPause
Question 43
Question
Which of the following lines of code starts activity Activity2 from a current activity Activity1?
Answer
-
Intent intent = new Intent(this,new Activity2());
startActivity(intent);
-
Intent intent = new Intent(new Activity2());
startActivity(intent);
-
Intent intent = new Intent(Activity1.class, Activity2.class);
startActivity(intent);
-
Intent intent = new Intent(this,new Activity2().class);
startActivity(intent);
Question 44
Question
Which of the folloring methods is called in an Activity when another activity gets into foreground?
Answer
-
onStop()
-
onPause()
-
onDestroy()
-
onExit()
Question 45
Question
Consider the following code:
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setData(android.net.Uri.parse("http://www.androidatc.com"));
startActivity(intent);
Which of the following is correct about the code above?
Answer
-
It sends a result to a new Acctivity in a Bundle
-
It will not compile without adding the INTERNET permission the Manifest file
-
it starts any activity in the application that has a WebView in its layout
-
When it is executed, the system starts an intent resolution process to start the right Activity.
Question 46
Question
Which if the following is not true about <activity> tag in AndroidManifest.xml
Answer
-
Declares an activity that implements part of the application's visual user interface
-
Contained in zapplication> tag
-
Declares a single hardware or software feature that is used by the application
-
Has an attribute that specifies the name of the Activity sub-class that implements the activity.
Question 47
Question
Which of the following Android View sub-classes uses the WebKit rendering engine to display web pages?
Answer
-
PageView
-
WebView
-
MapView
-
HttpCient
Question 48
Question
Consider the following code:
@Override
pubic void onCreateContextMenu( ContextMenu menu, View v, ContextMenuInfo){
super.onCreateContextMenu(menu,v,menuInfo);
menu.setHeaderTitle("Menu");
AdpaterContextMenuInfo cmi = (AdapterContextmenuInfo) menuInfo;
menu.add(1,cmi.position, 0,"open file");
menu.add(2,cmi.position, 0,"save file");
}
Which of the following best explains the code above?
Answer
-
The code inflates an xml file menu items
-
The code creates menu items for context menu programmatically
-
The code assign actions to menu items
-
The code Opens a menu resource file, modifies it, and saves the changes
Question 49
Question
Which of the following are primary pieces of information that are required to define in an implicit Intent?
Answer
-
An Action to be performed and data to operate on
-
An action to be performed and a category for additional information
-
A Bundle for extra data
-
A category for additional information and data to operate on
Question 50
Question
When is the intent resolution process triggered?
Answer
-
When the system receives an implicit intent to start an activity
-
When an explicit intent starts a service
-
When the system receives an explicit intent to start an activity
-
When the application calls method "startActivityIntentResolution"
Question 51
Question
Which of the following you cannot acchieve by creating your own View sub-clases?
Answer
-
Create a completely new customized View type
-
Combine a group of View components into a new single component
-
Specify when to destroy an activity and all its views
-
Override the way that an existing component is displayed on the screen
Question 52
Question
Which of the following applies to the onDraw() methods of class View? (Choose two)
Answer
-
It must be overridden if a customize drawing of a view is required
-
it takes two parameters: a Canvas and a View
-
It takes one parameter of type Canvas
-
It uses the Canvas parameter to draw the border of the acctivity that constains it
Question 53
Question
Which of the following is true about the Dialog class? (Choose two)
Answer
-
You can add a custom layout to a dialog using "setContetView()"
-
A dialog has a life-cycle independent of the Activity
-
A dialog id displayed on the screen using method show()
-
It does not have a method to access the activity that activity that owns it
Question 54
Question
Which of the following is not valid form of notification invoked by the NotificationManager?
Question 55
Question
Which of the following a Notification object must containt? (Choose three)
Answer
-
A small icon
-
A detail text
-
A notificacion sound
-
A title
Question 56
Question
During an Activity life-cycle, what is the first callback method invoked by the system?
Answer
-
onStop()
-
onStart()
-
onCreate()
-
onRestore()
Question 57
Question
Which configuration file holds the permission to use the internet?
Answer
-
Layout file
-
Property file
-
Java file
-
Manifest file
Question 58
Question
Intent intent = new Intent(FirstActivity.this,SecondActivity.class);
Question 59
Question
What is the name of the folder that contains the R.java file?
Question 60
Question
What is a correct statement about an XML layout file?
Answer
-
A layout PNG image file
-
A file used to draw the content of an Activity
-
A file that contains all application permission information
-
A file that contains a single activity widget
Question 61
Question
What does the src folder contain?
Question 62
Question
Which is not included in the Android application framework?
Answer
-
WindowManager
-
NotificationManager
-
DialerManager
-
. PackageManager
Question 63
Question
What Eclipse plugin is required to develop Android
application?
Question 64
Question
You can create a custom view by extending class Activity
Question 65
Question
Which of the following is a Java call-back method invoked
when a view is clicked?
Answer
-
Detector
-
OnTapListener
-
OnClickDetector
-
OnClickListener
Question 66
Question
Which of the following is not an Activity lifecycle call-back
method?
Answer
-
onStart
-
onCreate
-
onPause
-
onBackPressed
Question 67
Question
Which method is used to close an activity?
Answer
-
Destroy( )
-
Finish( )
-
Stop( )
-
Close( )
Question 68
Question
Which of the following tools dumps system log messages
including stack traces when the device or emulator throws an
error?
Question 69
Question
Javascript is enabled by default in a WebView
Question 70
Question
How to enable JavaScript in WebView?
Answer
-
myWebView. setJavaScriptEnabled(true);
-
myWebView.getJavaScriptSettings.setEnabled(true)
-
myWebView.getSettings().setJavaScriptEnabled(true);
-
Java script is always enabled in WebView
Question 71
Question
Which of the following is correct about XML layout files?
Answer
-
In order to display a Ul defined in the XML layout file "main.xml", call the
setContentView method of the Activity with the parameter string “main.xml"
-
There is no distinction between implementation of the layout definition by code, or by
XML layout file.
-
In an Eclipse project using the ADT plugin, the XML layout file is found in the /res/layout
directory.
-
Layout information written in the XML layout file will be converted into code by the
Android platform when the screen is displayed.
Question 72
Question
The DalvikVM core libraries are a subset of which of the following?
Answer
-
. Java ME
-
Java SE
-
Java EE
-
JAX-WS
Question 73
Question
Which of the following is correct about file access in the Android
system?
Answer
-
Generally, files are handled as dedicated resources per each application.
-
Files created by an application can be directly accessed by any application
-
The content of file created by application cannot be accessed by any other
application.
-
You can only access a file from within an Activity
Question 74
Question
When creating a file using
android.content.Context.openFileOutput("test.txt", 0), where is the file
created?
Answer
-
/data/app/<package name>/files
-
/data/data/<package name>/files
-
/system/app/<package name>/files
-
. /system/data/<package name>/files
Question 75
Question
Which of the following is incorrect about the LogCat tool?
Answer
-
A LogCat view is available as part of the ADT plugin of Eclipse
-
You can create a log in your application using Log.v(String, String)
-
. Each log message has a tag
-
Only one of your application can create log entries, and it should be component class
(Activity, Service,...etc)
Question 76
Question
Which of the following information is not included in the Manifest file?
Answer
-
The activities contained in the application
-
The permissions required by the application
-
The application’s minimum SDK version required.
-
The handset model compatible with your application.
Question 77
Question
Which method should you use to start a sub-activity?
Answer
-
startActivity(Intent intent)
-
startActivityForResult(Intent intent)
-
startService(Intent intent)
-
startSubActivity(Intent intent)
Question 78
Question
Which package of the following does not have classes needed for
Android network connections?
Answer
-
java.net
-
org.apache.http
-
android.location
-
android.net
Question 79
Question
Which of the following attributes is used to set an activity screen to
landscape orientation?
Answer
-
screenorientation = landscape
-
screenOrientation=”landscape”
-
android:ScreenOrientation=“landscape”
-
android:screenOrientation=”landscape”
Question 80
Question
What is not true about the AndroidManifest.xml file?
Answer
-
It declares the views used within the application
-
It declares user permissions the application requires
-
It declares application components
-
It declares hardware and software features used within the application
Question 81
Question
If your application is throwing exception
android.content.ActivityNotFoundException, how to fix it?
Answer
-
Create a new activity Java sub-class.
-
Rename your activity
-
Create the activity layout
-
Add the activity to the AndroidManifest
Question 82
Question
Q58. Which of the following lines of codes adds zoom controls to a
WebView?
Answer
-
webView.getSettings().setBuiltInZoomControls(true);
-
webView.getSettings().setZoomControls(true);
-
webView.getZoomSettings().setControls(CONTROLS.enabled);
-
Zoom controls are included by default in WebViews.
Question 83
Question
Which of the following best explains the Android option menus?
Answer
-
It is a popup menu that displays a list of items in a vertical list anchored to the view that
invoked the menu.
-
It is a floating menu that appears when the user performs a long-click on an element. It
provides actions that affect the selected content or context frame.
-
It is the primary collection of menu items for an activity where you should place actions
that have a global impact on the app, such as "Search," "Compose email," and
"Settings."
-
It is a type of List Activity with predefined headers and footers for special commands.
Question 84
Question
Which of the following best explains the Android context menus?
Answer
-
It is a popup menu displays a list of items in a vertical list that's anchored to the view
that invoked the menu.
-
It is a floating menu that appears when the user performs a long-click on an element. It
provides actions that affect the selected content or context frame.
-
It is the primary collection of menu items for an activity. It's where you should place
actions that have a global impact on the app, such as "Search," "Compose email," and
"Settings."
-
It is a sub-menu of an options menu item
Question 85
Question
Which of the following does NOT correctly describe interface
android.widget.Adapter?
Answer
-
It is an object that acts as a bridge between a View and underlying data for that view
-
It provides access to the data items.
-
It provides access to deprecated ListView methods
-
It is responsible for making a View for each item in the data set
Question 86
Question
Which of the following methods updates a ListView when an element
is added to the data set?
Question 87
Question
The values of which of the following classes cannot be mapped in a
Bundle object?
Answer
-
Parcelable
-
String
-
ArrayList
-
Context
Question 88
Question
Which of the following is true about method startActivity?
Answer
-
It starts a new activity and destroys the previous one
-
It starts a new activity and sends the previous one to the background
-
It starts a new activity and pauses the previous one.
-
It starts a new activity in a paused mode.
Question 89
Question
Which of the following is required to allow the Android Developer
Tools to interact with your view?
Answer
-
Provide a constructor that takes a Context and an AttributeSet object as parameters.
-
Provide a constructor that takes a Context object as parameter.
-
Extend class View
-
Override method onDraw() of class View.
Question 90
Question
What are the main two types of thread in Android?
Answer
-
Main thread and worker threads
-
Main thread and UI thread.
-
Activities and services
-
Main thread and background process.
Question 91
Question
Which of the following AsyncTask methods is NOT executed on the
UI thread?
Answer
-
onPreExecute()
-
onPostExecute()
-
publishProgress()
-
onProgressUpdate()
Question 92
Question
Which of the following is NOT true about method getWindow() of
class Dialog do?
Answer
-
It retrieves the current window for the activity
-
It can be used to access parts of the Windows API.
-
It displays the dialog on the screen.
-
It returns null if the activity is not visual