70-490 Exam
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Q31. - (Topic 7)
You are developing a line-of-business Windows Store app that will interact with a magnetic stripe reader. Your company distributes the magnetic stripe reader to an end user.
You need to activate the magnetic stripe reader.
Which method should you use?
A. GetDeviceSelector
B. CheckHealthAsync
C. ClaimScannerAsync
D. GetDefaultAsync
Answer: D
Q32. - (Topic 4)
You need to ensure that the settings for the About page meet the business requirements. Which attribute should you add to the DIV element in line AB07?
A. data-win-options="{width:'narrow'}"
B. data-win-options="{width:'346'}"
C. data-win-options="{size:'narrow'}"
D. data-win-options={size:'346'}"
Answer: A
Explanation: SettingsFlyout.width property (Windows)
Q33. - (Topic 7)
You are developing a Windows Store app by using JavaScript. The app will be installed on five devices. The app will use certificates to secure communications between the five devices.
Information sent through the app must be decrypted only by the intended recipient device.
You need to complete the certificate enrollment.
What should you do?
A. Create a single certificate enrollment request on one device and import the certificate to the other four devices.
B. Create a single group certificate enrollment request on one device and share the public and private keys with the other four devices.
C. Create a certificate enrollment request on each device and install the respective response on each device.
D. Create a single certificate enrollment request on one device and share only the public key with the other four devices.
Answer: C
Q34. - (Topic 7)
You are developing a fitness app for distribution through the Windows Store. The app must interact with the following USB device classes:
....
Webcam Infrared thermometer Scale Printer
You need to modify the app manifest file as required to support the devices.
Which two device classes should you include? Each correct answer presents part of the solution.
A. Printer
B. AudioVideo
C. IrDa
D. PersonalHealthcare
Answer: C,D
Q35. DRAG DROP - (Topic 7)
You are developing a Windows Store app.
You need to design a testing strategy.
Which type of testing should you use to achieve each objective? To answer, drag the appropriate testing types to the correct targets. Each technology 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:
Q36. - (Topic 7)
You are developing a Windows Store app by using JavaScript.
The app contains the following code. (Line numbers are included for reference only).
You need to ensure that the app will handle any possible event for a media connection in a Play To streaming operation.
How should you complete the relevant code? (Each correct answer presents part of the solution. Choose all that apply.)
A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
F. Option F
Answer: A,B,F
Q37. - (Topic 1)
You need to retrieve the background task collection for the iteration loop. Which code segment should you insert at line BG14?
A. var tasks = Windows.ApplicationModel.Background.BackgroundTaskRegistration.first();
B. var tasks = Windows.ApplicationModel.Background.BackgroundTaskRegistration.allTasks.first();
C. var tasks = Windows.ApplicationModel.Background.BackgroundTaskBuilder.allTasks.first();
D. var tasks = Windows.ApplicationModel.Background.BackgroundTaskRegistration.allTasks();
Answer: B
Q38. 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:
Q39. HOTSPOT - (Topic 7)
You develop a Windows Store app by using JavaScript. The current environment is shown in the following diagram.
A central cloud server must be able to push notifications to all mobile platforms including, but not limited to, Windows 8.x devices and Windows 8 Phones.
You need to configure the environment.
Select the correct answer from each list based on the information presented in the diagram. Each correct selection is worth one point.
Answer:
Q40. - (Topic 2)
You need to modify the app so that the user can play videos by tapping the screen. What should you do?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A
Explanation: poster property (Windows) controls property (Windows)