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Mobile Development Fundamentals
Question No: 91 – (Topic 1)
Which class is used to embed a video in a Windows Phone 7.5 Silverlight application?
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videoSink
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VideoDrawing
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MediaElement
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MediaPlayer
Answer: A
Question No: 92 – (Topic 1)
You create a method named WriteDateTime for a Windows Phone application.
You need to use the method to write the current date and time to a text file named lasttime.txt.
Which code segment should you use?
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Option A
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Option B
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Option C
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Option D
Answer: C
Question No: 93 – (Topic 1)
Which two standard screen orientations can be used in Windows Phone applications? (Choose two.)
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Portrait
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upright
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Landscape left
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Duplex
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Rotated
Answer: A,C
Explanation: Windows Phone supports portrait and landscape screen orientations.
Question No: 94 – (Topic 1)
You develop an application that has two threads. One thread calls a method to enumerate a list. The second thread continues to run the main program, and then accesses the enumerated data list generated by the first thread.
How do you refer to this programming architecture?
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Linear
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Synergistic
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Asynchronous
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Polymorphic
Answer: C
Question No: 95 – (Topic 1)
Which two restrictions are placed on developer unlocked devices? (Choose two.)
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a maximum of three devices can be unlocked by using one App Hub account.
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Internet access is restricted to HTTP Port 80.
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Use of native code is disallowed.
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Only a certain number of applications can be sideloaded at a time.
Answer: A,D
Explanation: Now, any developer can unlock and register 1 phone to load up to 2 apps. Registered developers with Dev Center accounts continue to have the option to unlock up to 3 phones and upload up to 10 apps on each.
Question No: 96 – (Topic 1)
Which dictionary is used to store persistent data between the sessions of an application?
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PhoneApplicationService.Current.State
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viewState
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PhoneApplicationPage.State
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IsolatedStorageSettings.ApplicationSettings
Answer: D
Question No: 97 – (Topic 1)
You need to reduce color banding of images when using Windows Phone that supports a 16-bit color-display panel. What are two possible ways to achieve this goal? (Choose two.)
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Use dithering when creating images.
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Avoid gradients in images.
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Use the JPG format for images.
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Use transparency when creating images.
Answer: A,B
Explanation: A:Youcanuse dithering.
B: Onesolution is to not use gradients directly.
Question No: 98 – (Topic 1)
A message pattern in which all the communication is initiated by the client device to the networked resource is referred to as a/an:
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echo reply.
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automated service.
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multicast.
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request/reply,
Answer: D
Question No: 99 – (Topic 1)
You create two game applications named Application A and Application B for your Windows Phone.
Application A allows users to unlock achievements as they progress through the game. The starting point of Application B is relative to the achievements unlocked by the user in Application A.
You need to share the data between the two applications. What should you do?
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Store the data of Application A in an isolated storage XML file. Use Application B to read the data from the XML file.
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Store the data of Application A in the cloud by using web services. Use Application B to retrieve the data by using web services.
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Expose the data in Application A to Application B by using the AppConnect feature.
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Store the data of Application A in a local database. Use Application B to read the data from the local database.
Answer: B
Question No: 100 – (Topic 1)
Which Windows Phone theme color is used to single out items of interest in Windows Phone applications?
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Foreground
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Accent
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Contrast
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Background
Answer: B
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