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Code d'Examen: 70-491
Nom d'Examen: Microsoft (Recertification for MCSD: Windows Store Apps using C#)
Questions et réponses: 91 Q&As
Code d'Examen: 98-373
Nom d'Examen: Microsoft (Mobile Development Fundamentals)
Questions et réponses: 235 Q&As
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NO.1 You are developing a Windows Store app.
The app will access a web service.
You need to declare the web service Uniform Resource Identifier (URI).
Which file should you modify?
A. AppxManifest
B. AppConfig
C. WebConfig
D. Wsp
E. xap
Answer: E
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NO.2 You need to implement storage for the user preferences.
Which storage solutions can you use to meet the specification for the app? (Each correct answer
presents a complete solution. Choose all that apply.)
A. TheWindows.Storage.StorageItemType object
B. TheWindows.Storage.ApplicationData.Current.RoamingSettings object
C. Windows Azure
D. The await Windows.Storage.ApplicationData.Current.LocalFolder method
Answer: A,D
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Explanation:
* Scenario: The app will run locally on the user's device. User preferences will be available locally.
NO.3 You are developing a Windows Store app.
The app will access several web resources that use an OAuth 2.0 authentication provider.
You need to recommend in which class to store user credentials so that users do not have
to reenter their credentials when they access the web resources.
Which class should you recommend?
A. System.Net.AuthenticationManager
B. System.Net.NetworkCredential
C. Windows.Security.Credentials.WebAccount
D. Windows.Security.Credentials.PasswordVault
Answer: D
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Explanation:
The task of storing and retrieving user credentials securely and allowing user credentials roam at no
cost with the user's Microsoft account is simplified with the Credential Locker. Storing user
credentials in the Credential Locker is a quick, two-step process. 1.Obtain a reference to the
Credential Locker using the PasswordVault object from the Windows.Security.Credentials
namespace. 2.Create a PasswordCredential object that contains an identifier for your app, the
username and the password, and pass that to the PasswordVault.Add method to add the credential
to the locker.
NO.4 You are developing a Windows Store app. You have the following requirements:
- Enable the app to receive shared data.
- Save the sharing settings for future use.
You need to ensure that the requirements are met.
What should you implement?
A. a play to charm
B. a Share target
C. a share charm
D. a QuickLink
Answer: D
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Explanation:
* When people swipe from the side of the screen and tap the Share charm, the Share pane appears
with a list of apps people can use to share their content. This list
includes any installed apps that are "share targets" for a particular data format.
The links at the top of the image, called QuickLinks, allow users to complete specific share
tasks directly.
* QuickLink class Applies to Windows and Windows Phone Represents shortcuts that help users share
content with the apps they use most.
NO.5 DRAG DROP
You are developing a Windows Store app named App1.
You need to ensure that App1 meets the following requirements:
- Must be able to display a list of items in rows and columns.
- Must be able to display items one at a time.
What should you use for each requirement? (To answer, drag the appropriate elements to the
correct requirements. Each element 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.)
Answer:
NO.6 You need to access the remote image data according to the requirements.
Which data storage methods should you use?
A. SaveDataToSqlAzureStorage() and GetDataFromSqlAzureStorage()
B. SaveDataToRemoteStorage() and GetDataFromRemoteStorage()
C. SaveDataToAzureStorage() and GetDataFromAzureStorage()
D. SaveDataToWebService() and GetDataFromWebService()
Answer: D
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NO.7 You are developing a Windows Store app named VideoPlayer.
The app will provide user with the ability to select video files by using the file picker and to play the
video.
You need to recommend a solution for the app that meets the following requirements:
- If the app is terminated while playing a video, the next time the app starts, the video must play.
- The app must minimize the amount of storage space used.
- The app must NOT request any capabilities.
What should you include in the recommendation?
A. Add the file to AccessCache.StorageApplicationPermissions.MostRecentlyUsedList.
B. Store the StorageFile.Path property in ApplicationData.Current.LocalSettings.
C. Store the video in ApplicationData.Current.RoamingFolder.
D. Store the video in ApplicationData.Current.LocalFolder.
Answer: A
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Explanation:
http://msdn.microsoft.com/enus/library/windows/apps/windows.storage.accesscache.storageapplic
ationpermissions.mos trecentlyusedlist.aspx
NO.8 You are developing a Windows Store app that will provide users with the ability to create
photos by using the hardware on a device.
Once the users create the photos, they can save the photos to the Pictures library.
If the users sign in by using a Microsoft account, they can grant other users remote access to the
photos.
You need to identify which capabilities must be enabled for the app.
Which three capabilities should you identify? (Each correct answer presents part of the solution.
Choose three.)
A. Webcam
B. Pictures Library
C. Proximity
D. Internet (Client & Server)
E. Private Networks (Client & Server)
F. Enterprise Authentication
Answer: A,B,D
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Explanation:
A: The webcam capability provides access to the webcam's video feed, which allows the app to
capture snapshots and movies from a connected webcam.
B: The picturesLibrary capability provides programmatic access to the user's Pictures, allowing the
app to enumerate and access all files in the library without user interaction. This capability is typically
used in photo playback apps that need to access the entire Pictures library.
D: Internet and public networks The internetClient capability provides outbound access to the
Internet and public networks through the firewall. Almost all web apps use this capability. The
internetClientServer capability provides inbound and outbound access to the Internet and public
networks through the firewall.
http://msdn.microsoft.com/en-us/library/windows/apps/hh464936.aspx
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