Microsoft 70-490 ExamRecertification for MCSD: Windows Store Apps using HTML5

Total Question: 88 Last Updated: January 15,2018
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Exambible offers free demo for 70-490 exam. "Recertification for MCSD: Windows Store Apps using HTML5", also known as 70-490 exam, is a Microsoft Certification. This set of posts, Passing the Microsoft 70-490 exam, will help you answer those questions. The 70-490 Questions & Answers covers all the knowledge points of the real exam. 100% real Microsoft 70-490 exams and revised by experts!

Q21. - (Topic 3) 

You need to implement the file storage solution for equipment drivers and updates. 

What should you do? 

A. Map a KnownFolder as the local default file storage location. 

B. Map the inspector's OneDrive folder as the default file storage location. 

C. Use the Live Connect REST API to map a default file storage location. 

D. Map the inspector's Documents folder as the default file storage location. 

Answer:


Q22. - (Topic 3) 

You need to implement the secondary schedule functionality for inspectors. 

Which two actions should you perform? Each correct answer presents part of the solution. 

A. Browse through the client database to find all clients with the same postal code. 

B. Define a geofence by using the location capabilities of the device. 

C. Specify the maximum distance of nearby equipment. 

D. Ascertain the proximity of the nearest piece of client-owned equipment. 

Answer: B,C 

Explanation: * From scenario, the secondary scheduling requirement is: 

Inspectors must be able to request a list of other clients within a specified search distance 

who might require equipment inspection. 

* Geofence / A geo-fence is a virtual perimeter for a real-world geographic areas. A geo-fence could be dynamically generated—as in a radius around a store or point location. / Geofence class Contains the information to define a geofence, an area of interest, to monitor. 


Q23. - (Topic 7) 

You develop a Windows Store app that allows users to modify images by using filters and image-processing algorithms. 

The app must meet the following requirements: 

. Use a web worker to initiate the image-processing algorithms on a separate thread. . Clean up the web worker after processing the algorithms. 

You need to ensure that the web worker releases memory after processing the algorithms. What should you do? 

A. From the calling page, call the closet) command. 

B. From the calling page, call the postMessage() command with the terminate parameter. 

C. From the web worker, call the GC.Collect method. 

D. From the web worker, call the close() command. 

Answer:

58. HOTSPOT - (Topic 7) 

The following image depicts three apps. App1 and App3 have been launched by App2. 

Select the correct answer from each list based on the information presented in the image. Each correct selection is worth one point. 

Answer: 


Q24. - (Topic 3) 

You need to enable the loading of the daily schedule when the inspector launches the application. 

Which class should you use? 

A. BackgroundExecutionManager 

B. BackgroundTaskRegistration 

C. SystemCondition 

D. BackgroundWorkCost 

Answer:


Q25. DRAG DROP - (Topic 7) 

You develop a Windows Store app that plays videos. 

The videos include subtitles that are stored in Video Text Track (.vtt) files. 

The app interface must include a button that displays the subtitles, and another button that hides the subtitles. 

How should you complete the relevant code? To answer, drag the appropriate code segments to the correct targets. 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: 


Q26. - (Topic 7) 

You are developing a Windows Store enterprise app. 

The app must retrieve data from other apps asynchronously across domains by using the 

XMLHttpRequest object. 

You need to retrieve the data. 

What should you use? 

A. WinJS.xhr 

B. HttpWebRequest 

C. HTTPClient 

D. GetResponseStream() 

Answer:

Explanation: C# and the Web: Writing a Web Client Application with Managed Code in the Microsoft .NET Framework 


Q27. - (Topic 6) 

You need to ensure that the PrintNearMeCall function meets the technical requirements. Which code segment should you insert at line PS24? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:

Explanation: http://msdn.microsoft.com/en-us/library/windows/apps/br229727.aspx http://msdn.microsoft.com/en-us/library/windows/apps/br229728.aspx 


Q28. - (Topic 7) 

You are developing two Windows Store 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? 

A. Encrypt and decrypt data by using an asymmetric algorithm. 

B. Encrypt and decrypt data by using a symmetric algorithm. 

C. Encrypt data by using an asymmetric algorithm. Decrypt data by using a symmetric algorithm. 

D. Encode data to and decode data from a Base64 string. 

Answer:


Q29. - (Topic 3) 

You need to ensure that drivers can be updated. What should you do? 

A. Connect to the Documents library. 

B. Implement the FileOpenPicker control. 

C. Implement the OpenFileDialog class. 

D. Implement the FileSavePicker control. 

Answer:


Q30. - (Topic 3) 

You need to implement the storage policy for secure documents. Which code segment should you insert at line PF12? 

A. Windows.Security.EnterpriseData.FileRevocationManager.getStatusAsync 

B. Windows.Security.EnterpriseData.FileRevocationManager.protectAsync 

C. Windows.Security.EnterpriseData.FileRevocationManager.Revoke 

D. Windows.Security.EnterpriseData.FileRevocationManager.copyProtectAsync 

Answer:


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