Android Programming Quiz # 7

Which of the following statements are correct with regards to calling place GoogleAuthUtil.getToken()?

A) call getToken() on the UI thread

B) call getToken() on AsyncTask

Statement A is true, while Statement B is false.

Statement B is true, while Statement A is false.

Both statements are true.

Both statements are false.

Which of the following protocols are provided by Google for GCM Connection Servers?

A) HTTP

B) XMPP

C) SOAP

D) RMI

A and B

A, B, C

C, D

all of these

Which of the following 4 classes does not relate to others?

ApplicationInfo, SyncInfo, ActivityInfo, PackageInfo

ApplicationInfo

SyncInfo

ActivityInfo

PackageInfo

Which of the following are valid ways to deploy an Android application to a device?

Using the "adb install /path/to/apk" command from the command prompt/terminal, when USB Debugging Mode is enabled in the device.

Exporting and signing the package, then browsing it to install.

Launching the application from an IDE, when USB Debugging Mode is enabled in the device.

All of these.

Which of the following classes is not used in working with database?

SQLiteOpenHelper

SQLiteDatabase

ContentProvider

DatabaseHelper

Consider the XML fragment below, which is taken from one of the files in an Android project:

        android:layout_width = "fill_parent"

        android:layout_height = "fill_parent"

        android:text = "Some Text">

Which of the following are true about the XML fragment above?

It is taken from the manifest XML file of the Android project.

It is taken from an XML file used to define a view.

It is taken from the package file (.apk) of the Android project.

The xmlns: attribute is a compulsory attribute.

If this is not the outer most tag in the XML file then it need not contain the xmlns: attribute.

MyElement should be the name of a class derived, directly or indirectly, from the View class.

Which of the following statement is correct regarding StrictMode?

StrictMode detects improper layouts

StrictMode detects operation which blocks UI

StrictMode detects the speed of the connection

All of the above

Which of the following statements are correct with regards to publishing updates of apps on Google Play?

The android:versionCode attribute in the manifest file must be incremented and the APK file must be signed with the same private key.

The android:versionCode attribute in the manifest file must be same and the APK file must be signed with the same private key.

The android:versionCode attribute in the manifest file must be incremented and the APK file must be signed with the new private key.

The android:versionCode attribute in the manifest file must be same and the APK file must be signed with the new private key.

Consider the code snippet below:

MediaPlayer mp = new MediaPlayer();

mp.setDataSource(PATH_TO_FILE);

mp.start();

Which of the following should be placed at ?

mp.prepare();

mp.prepareAsync();

mp.loadMedia();

mp.loadSource();

mp.loadSource(); mp.prepare();

No code is required at to start playback.

Which of the following is the best way to request user permission if an Android application receives location updates from both NETWORK_PROVIDER and GPS_PROVIDER?

Adding this line to the Android manifest file: <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

Adding these two lines to the Android manifest file: <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

Adding this line to the Android manifest file: <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

Adding this line to the Android manifest file: <uses-permission android:name="android.permission.CONTROL_LOCATION_UPDATES" />

Which of the following statements are correct with regards to Content Providers?

A) A content provider allows applications to access data.

B) A content provider must be declared in the AndroidManifest.xml file.

Statement A is true, while Statement B is false.

Statement B is true, while Statement A is false.

Both statements are true.

Both statements are false.

Which of the following functions will return all available Content Providers?

List<ProviderInfo> returnList = new ArrayList<ProvderInfo>(); for (PackageInfo pack : getPackageManager().getInstalledPackages(PackageManager.GET_PROVIDERS)) { ProviderInfo[] providers = pack.providers; if (providers != null) { returnList.addAll(Arrays.asList(providers)); } } return returnList;

return getContext().getPackageManager().queryContentProviders("com.google", Process.myUid(), 0);

List<ActivityInfo> returnList = new ArrayList<ActivityInfo>(); for (PackageInfo pack : getPackageManager().getInstalledPackages(PackageManager.GET_RECEIVERS)) { ActivityInfo[] providers = pack.receivers; if (providers != null) { returnList.addAll(Arrays.asList(providers)); } } return returnList;

None of these.

What is correct regarding GCM - Google Cloud Messaging service?

It does server to device communication.

It does device to server communication.

It does device to server communication and vice versa.

It does device to device communication.

Which of the following procedures will get the package name of an APK file?

Looking for the package attribute's value of the <manifest> element in the manifest file.

Executing the command, "pm list packages -f", in the ADB shell.

Programmatically, using PackageManager in an installed Android app.

Using the AAPT platform tool, "aapt dump badging apkName.apk".

What is the maximum supported file size for a single APK file (excluding expansion packages) in the Google Play Store?

50MB

2GB

30MB

unlimited

Fill in the blank:

Once an app is published, the ________ cannot be changed. It should be unique for each APK.

private key

package name

main activity

APK file name

Which of the following attributes in the manifest file defines version information of an application for the Google Play Store (as opposed to defining version information for display to users)?

android:versionCode

android:versionName

android:targetSdkVersion

android:maxSdkVersion

What is the maximum supported size for a single expansion file in the Google Play Store?

50MB

2GB

30MB

unlimited

Which of the following tools can be used to reduce apk package size?

lint

ProGuard

zipalign

etc1tool

Fill in the blank:

___________ makes appropriate list of application data for the other applications.

service provider

content provider

application provider

Resource

Which of the following are Android build modes?

Debug mode

Release mode

Production mode

Development mode

What is the correct way to fix if checking the status of the GPS_PROVIDER throws SecurityException?

request permission for ACCESS_COARSE_LOCATION

request permission for ACCESS_FINE_LOCATION

request permission for INSTALL_LOCATION_PROVIDER

None of the above

Which of the following packages provide the classes required to manage the Bluetooth functionality on an Android device?

android.hardware

android.bluetooth

android.bluez

org.bluez

Which of the following is correct to use for data transfer regularly and efficiently, but not instantaneously?

AsyncTask

IntentService

Sync adapters

All of these

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

Activity.onFreeze()

Activity.onPause()

Activity.onStop()

Activity.onDestroy()

Which of the following are true about PhoneStateIntentReceiver.notifyPhoneCallState?

notifyPhoneCallState has to be called if your application wishes to receive a notification about an incoming phone call.

notifyPhoneCallState is a call back function that is called when the call state changes.

notifyPhoneCallState is called to initiate a call from the device.

notifyPhoneCallState is used to send notifications about call states.

notifyPhoneCallState gets called when the device receives an incoming phone call.

Which of the following programming languages can be used to develop software applications for the Android platform?

Java

C# with .NET Compact Framework for mobile devices.

C programming language.

Android programming language.

Which of the following classes does not relate to other? SQLiteOpenHelper, SQLiteDatabase, Cursor, ContentProvider

SQLiteOpenHelper

SQLiteDatabase

Cursor

ContentProvider

Which of the following statements is not correct with regards to using Content Providers?

offering complex data or files to other applications.

allowing users to copy complex data from one app into other apps.

using an SQLite database if the use is entirely within on application.

providing custom search suggestions using the search framework.

What is "Android-Positron"?

A command line tool to create Android project files.

A framework to create unit tests for Android projects.

A resource editor to create user interface for Android applications.

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

An emulator to execute and debug Android projects.

Quiz:	Android Programming Quiz # 7
Subject:	Basic Android Programming
Total Questions:	30 MCQs
Time:	30 Minutes