70-491 Exam
Top 10 vce 70-491 for IT learners (1 to 10)
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Q1. - (Topic 4)
You need to track the screen orientation and page size. Which code segment should you insert at line CS09?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A
Q2. - (Topic 9)
You are designing a Windows Store app to manage image and video files.
The app must meet the following requirements:
Video files must be stored locally on each device.
The app must use local storage for data caching.
User settings must be shared across multiple devices.
Image files must be available across multiple devices.
Metadata for images must be stored in a central database.
Image files, video files, and their associated metadata must load as quickly as
possible.
You need to identify which data must be cached based on the app requirements.
Which two types of data should you identify? (Each correct answer presents part of the solution. Choose two.)
A. User settings
B. Video files
C. Image files
D. Metadata
Answer: C,D
Explanation: Image files, video files, and their associated metadata must load as quickly as possible. http://msdn.microsoft.com/en-us/library/windows/desktop/aa365201(v=vs.85).aspx
Q3. DRAG DROP - (Topic 9)
You are developing a Windows Store app that caches user application data in the local data store.
The app must create a setting named UserName within a container named UserSettings. The app must store the user name in the local store.
You need to meet the requirements.
How should you complete the code segment? (To answer, drag the appropriate options to the correct location or locations. Each option 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:
Q4. - (Topic 9)
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
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
Q5. - (Topic 3)
Users report performance issues when getting the location information associated with a photo. You suspect the app is encountering performance issues in the GetLocationAsync() method of the Environment class.
You need to enhance the performance of the GetLocationAsync() method of the app.
What should you do?
A. Remove the Compass initialization from the LoadSensors() method and initialize it within the GetLocationAsync() method.
B. set the ReportInterval property of the Compass object to 16.
C. set the ReportInterval property of the Compass object to 0.
D. Move the locator variable to a class level variable and initialize it in the Environment constructor.
Answer: D
Q6. DRAG DROP - (Topic 9)
You are developing a page for a Windows Store app.
You have the following requirements for the page:
. Display a button on the bottom app bar that allows the user to insert a picture. This button must be bound to the Insert command in the view model. . Display a button in the main content area of the page that allows the user to open documents. This button must be bound to the Open command in the view model.
You need to ensure that the requirements are met.
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.)
Answer:
Q7. DRAG DROP - (Topic 9)
You are developing a Windows Store social media app. The app communicates with the
server by using a secure web service.
You need to ensure that users can securely store and retrieve web service credentials.
You have the following code:
Which code snippets should you insert in target 1 and target 2 to complete the code? (To answer, drag the appropriate code snippets to the correct targets in the answer area. Each code snippet 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:
Q8. HOTSPOT - (Topic 9)
You are developing a Windows Store app.
You need to encrypt data.
How should you complete the code segment? (To answer, select the appropriate line of
code from each drop-down list in the answer area.)
Answer:
Q9. - (Topic 9)
You plan to develop a Windows Store app to create pictures.
Users of the app will be able to save the pictures that they create and to share the pictures with friends by using a web link.
You need to ensure that the friends can makes comments on the shared pictures.
Which storage technology should you use? (More than one answer choice may achieve the goal. Select the BEST answer.)
A. Roaming storage
B. Microsoft Azure blob storage
C. Microsoft Azure Mobile Services
D. One Drive
Answer: D
Q10. - (Topic 9)
You are developing a Windows Store app that accesses a USB Human Interface Device (HID). The app has a default page and a settings page.
You need to ensure that when a user connects the USB device, the app starts automatically and opens the settings page.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Override the OnLaunched method in the Application class and use the ApplicationViewEventArgs interface.
B. Add a File Type Associations declaration to the app manifest.
C. Add a Removable Storage capability to the app manifest.
D. Override the OnActivated method in the Application class and use the ActivatedEventArgs interface.
E. Add an AutoPlay Device declaration to the app manifest.
Answer: A,D
Explanation: http://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.xaml.application.aspx