You are developing a Windows Store app by using JavaScript. The app persists a list of restaurants in
the app’s settings. The restaurant list is identified by a key of city. The app must allow users to
remove their restaurant lists from the app’s settings. The following function call removes the city
setting:
deleteListSetting(“city”) ;
You need to remove only city from the settings storage without disrupting other settings.
Which code segment should you use?

You are developing a Windows Store app by using JavaScript. The app will allow users to customize
various features. The customizations will be persisted by using the setAppSetting function.
You need to persist the customizations.
Which code segment should you use?

You are developing two Windows Store style apps by using JavaScript. A Source app will store
sensitive customer information. A Target app will retrieve the stored information for validation and
further processing. The Source app must secure data by using a private-public key pair. Only the
Target app must be able to consume data that has been secured by the Source app. You need to
ensure that the security of the data is not compromised. What should you do?

DRAG DROP
You are developing a Windows Store app by using JavaScript. The app will use the fileStream object
to write text to a file. You need to write the text to the file and ensure that the file is available to
other apps. Which five actions should you perform in sequence? (To answer, move the appropriate
actions from the list of actions to the answer area and arrange them in the correct order.)

DRAG DROP
You are developing a Windows Store style app by using JavaScript. The app will send and receive
encoded information and will display the encoded information to the user in a decrypted and
recognizable state. You need to appropriately decrypt the encoded information. How should you
complete the relevant code? (To answer, drag the appropriate code segments to the correct
locations in the answer area. Each code segment may be used once, more than once, or not at all.
You may need to drag the split bar between panes or scroll to view content.)

You are developing a Windows Store app. You configure the app to allow a free trial period. You
need to prompt the user to purchase the full version of the app when the trial period expires. What
should you do?

HOTSPOT
You are designing a testing strategy for a Windows Store app by using HTML5, JavaScript, and CSS3.
You need to use testing strategies that validate for the best performance. Which testing strategies
should you select? (To answer, select the correct action from each drop-down list in the answer
area.)

HOTSPOT
You are preparing four Windows Store apps for deployment. You test the apps by using the Windows
App Certification Kit. The results are as shown in the following table.

You need to identify which apps passed the performance test. What is the performance test result
for each app? (To answer, choose the correct test result from each drop-down list in the answer
area.)

HOTSPOT
You are developing a Windows Store app by using JavaScript. The app will call a WinMD component
to convert temperature. The component exposes the following two members:
A static variable named Fahrenheit
A public method named GetInCelsius( ) that accepts an integer
You need to ensure that the app will display the temperature in Celsius and Fahrenheit. How should
you complete the relevant code? (To answer, select the correct code segment from each drop-down
list in the answer area.)

DRAG DROP
You are preparing a Windows Store app that will be distributed through the Windows Store. You
install the app on a test computer that runs Windows 8. You must run functional test cases by using
the Windows App Certification Kit. You need to test the app before you deploy it to the Windows
Store. Which four actions should you perform in sequence? (To answer, move the appropriate
actions from the list of actions to the answer area and arrange them in the correct order.)