Question 1

What does the following code snippet do? iabHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() { public void onIabSetupFinished(IabResult result) { if (!result.isSuccess()) { …… } else { } });
A) Check if a purchase is complete.
B) Verify the credit card used is acceptable.
C) Initialize billing setup within your application.
D) Verify is amount is paid successfully.

Accepted Answer

This code initializes the billing setup within the application using the IabHelper class, which is shorthand for In-App Billing Helper. The listener checks whether the setup was successful, and if not, it handles the error.

Question 2

Which of the following two classes in the License Verification Library are main classes used to communicate with the licensing server?
A) LicenseChecker and LicenseCheckerCallback.
B) License and LicenseCallback.
C) LicenseCallback and LicenseCheckerCallback.
D) LicenseVerifier and LicenseVerifierCallback.

Accepted Answer

The main classes used to communicate with the licensing server are LicenseChecker and LicenseCheckerCallback.

Question 3

Which of the following can only be performed before an application release and not after? (Choose two)
A) Create a product list to be purchased through in-app billing.
B) Remove log messages.
C) Build a signed release of your application.
D) Create a Google Wallet merchant account.

Accepted Answer

Removing log messages and building a signed release of your application are tasks that are typically done before releasing an application to ensure that the final product is optimized and secure.

Question 4

What does the following code snippet do? AdRequest request = new AdRequest(); request.setGender(AdRequest.Gender.FEMALE); request.setLocation(location); request.setBirthday("19850101");
A) Customize an ad request to improve Google's targeted ads
B) Send authentication information to the ads server.
C) Provider registration information about current user to enable ads account.
D) Set obligatory info required by ads server

Accepted Answer

The code snippet customizes an ad request by specifying the user's gender, location, and birthday, in order to improve the targeting of Google's ads.

Question 5

When tracking the errors in your application using a mobile analytics service, which of the following is NOT a correct type of information you can collect?
A) Where in the code the exception occurred.
B) What time the error was thrown.
C) What actions the user made that caused the error
D) Which component of the Android OS threw an exception.

Accepted Answer

A mobile analytics service can only track errors that occur within the application itself. It cannot track errors caused by components of the Android OS outside of the application's control. Therefore, D is not a correct type of information that can be collected.

Question 6

What does the following code snippet do? mHelper.launchPurchaseFlow(this, ITEM_SKU, 10001, mPurchaseFinishedListener, "");
A) Inform Google Play to add a product to the product list.
B) Send the purchased item to the application.
C) Launches and finishes the purchase process.
D) Starts the purchase process.

Accepted Answer

The code snippet starts the purchase process by launching the Purchase Flow for the specified item with the given SKU (ITEM_SKU) and listener (mPurchaseFinishedListener). The value 10001 is used as the requestCode parameter for the purchase flow. The empty string "" is passed as the developerPayload parameter.

Question 7

Assuming refers to the installation path of Android SDK, which of the following is the correct installation path for Google Play Billing Library? A) \android-sdk\extras\play_billing B) \android-sdk\extras\google\play_billing C) \android-sdk\google\play_billing D) \android-sdk\extras\google\billing

Accepted Answer

The correct installation path for Google Play Billing Library is "<SDK-Path>\android-sdk\extras\google\play_billing". This directory contains the AIDL files and sample code for Google Play Billing Library.

Question 8

Which of the following is not required to be handled by a developer if Google Play's in-app billing is used in an Android application?
A) Check out details for financial transactions.
B) User authentication to use the application.
C) Building items in the application and setting prices.
D) Adding application layout and resources.

Accepted Answer

The answer of Which of the following is not required...

Question 9

Which of the following is NOT true about enabling advertisements in your application using AdMob?
A) The Android library project included in AdMob's SDK is added as a library project in the application.
B) The AdMob's SDK jar file is added to the build path of the application.
C) The URL of AdMob's online service is used in the application.
D) The package name of the application and SHA certificate is submitted to AdMob's service and the key is returned against the particular application. That key is then used in the layout of the application.

Accepted Answer

The answer of Which of the following is NOT true...

Question 10

Which of the following does NOT apply to interstitial ads?
A) They present rich HTML5 experiences or web applications.
B) They are usually placed between transition points within or while entering or exiting a mobile application.
C) They are used to complete an in-app billing transaction to communicate with the server.
D) They are usually rendered as full screen or big popup. Some of them render videos, images or other rich content.

Accepted Answer

Interstitial ads are not used to complete an in-app billing transaction to communicate with the server. Instead, they are used to display ads in between transition points within or while entering or exiting a mobile application. They can be presented as full screen or large pop-ups and can include various rich media content such as images, videos, or HTML5 experiences.

Question 11

Suppose you have built an application that communicates with the licensing server on application startup. What can you do to avoid communication and receiving the same response each time the user opens the application after the first usage? (Choose two)
A) Save the response received in String variable.
B) Save the response received permanently on device using SharedPreferences.
C) Save the response to the disk using the device's MySQL.
D) Save the response on the license server by sending the device ID.

Accepted Answer

Saving the response permanently on the device using SharedPreferences or saving it to the disk using the device's MySQL allows the application to access the stored response without needing to communicate with the licensing server each time.

Question 12

Which of the following contains the tools necessary to build and sign a release version of an application?
A) Dlavik Debug Monitor Server (DDMS)
B) Android Development Tools (ADT)
C) Android Debugging Bridge (ADB)
D) License Verification Library (LVL)

Accepted Answer

Android Development Tools (ADT) contains the necessary tools for building and signing a release version of an application. DDMS is used for debugging, ADB is used for communicating with an emulator or a connected Android device, and LVL is used for licensing validation.

Question 13

Upon completion of a purchase using Google Play in-app billing, the result is returned to your activity. Which method you should override to handle the returned result?
A) onActivityResult.
B) onResultReturned.
C) onPurchaseFinished.
D) OnIabPurchaseFinished

Accepted Answer

The correct method to handle the returned result of a purchase using Google Play in-app billing is onActivityResult().

Question 14

The following code snippet adds an AdView to a layout. What does the XML attribute ads:adUnitId refer to? <com.google.ads.AdView android:id="@+id/adView" android:layout_width="wrap_content" android:layout_height="wrap_content" ads:adUnitId="MY_AD_UNIT_ID" ads:adSize="BANNER" ads:testDevices="TEST_EMULATOR, TEST_DEVICE_ID" ads:loadAdOnCreate="true"/>
A) The ID of the device where ads are displayed for testing.
B) The publisher ID as provided by AdMob.
C) The location of the ad in the activity.
D) The Android resource id of the AdView

Accepted Answer

The ads:adUnitId refers to the publisher ID as provided by AdMob. This is needed to load ads on the AdView.

Question 15

Which two of the following are required to add a list of in-app products on Google Play? (Choose two)
A) Use permission com.android.vending.BILLING in your application.
B) User permission com.android.vending.PRODUCTS in your application
C) Have a Google Wallet merchant account.
D) An approval from Google before listing a product.

Accepted Answer

In order to add a list of in-app products on Google Play, you must use the permission com.android.vending.BILLING in your application and have a Google Wallet merchant account set up. Having an approval from Google is not required, but your app must follow the other Google Play policies and guidelines. The permission com.android.vending.PRODUCTS does not exist.

Exam 3: Monetize Android Applications

What does the following code snippet do? iabHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() { public void onIabSetupFinished(IabResult result) { if (!result.isSuccess() ) { …… } else { } }) ;

Which of the following two classes in the License Verification Library are main classes used to communicate with the licensing server?

Which of the following can only be performed before an application release and not after? (Choose two)

What does the following code snippet do? AdRequest request = new AdRequest() ; request.setGender(AdRequest.Gender.FEMALE) ; request.setLocation(location) ; request.setBirthday("19850101") ;

When tracking the errors in your application using a mobile analytics service, which of the following is NOT a correct type of information you can collect?

What does the following code snippet do? mHelper.launchPurchaseFlow(this, ITEM_SKU, 10001, mPurchaseFinishedListener, "") ;

Assuming <SDK-Path> refers to the installation path of Android SDK, which of the following is the correct installation path for Google Play Billing Library?

Which of the following is not required to be handled by a developer if Google Play's in-app billing is used in an Android application?

Which of the following is NOT true about enabling advertisements in your application using AdMob?

Which of the following does NOT apply to interstitial ads?

Suppose you have built an application that communicates with the licensing server on application startup. What can you do to avoid communication and receiving the same response each time the user opens the application after the first usage? (Choose two)

Which of the following contains the tools necessary to build and sign a release version of an application?

Upon completion of a purchase using Google Play in-app billing, the result is returned to your activity. Which method you should override to handle the returned result?

Which two of the following are required to add a list of in-app products on Google Play? (Choose two)