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Microsoft Advanced Windows Store App Development using C# Sample Questions:
1. You are developing a Windows Store app that allows users to compose musical beats and rhythms.
The app must meet the following requirements:
- The app must save the work in progress in case the app suspends or terminates before users save their work.
- If the app closes before the work is complete, work in progress should be automatically reloaded so that users can continue seamlessly from where they left off.
- Users should be able to resume work on another device with the app installed, provided that the user supplies the same credentials on both machines.
You need to ensure that the app meets the requirements.
How should the app save the work in progress?
A) by serializing it to a temporary app store
B) by serializing it to the local app store
C) by serializing it to the roaming app store
D) by storing it in a memory-mapped file
2. You are designing a Windows Store app that creates large amounts of temporary binary data each time it is run.
You need to ensure that data is persisted while the app is running but deleted when the app is closed.
Which app data storage mechanism should you use? (Each correct answer presents a complete solution. Choose all that apply.)
A) the app files of the local app data store
B) a roaming app data store
C) a temporary app data store
D) the app settings of the local app data store
3. You need to update the DoWork() method of the background task to meet the requirements.
What should you do? (Each correct answer presents part of the solution. Choose all that apply.)
A) Add the CancellationToken object to the client.GetAsync() method.
B) Confirm that the IsCancellationRequested property of the CancellationToken object is true and exit the task.
C) Access the Progress object and report the task's progress to the caller.
D) Get the IsCancellationRequested property from the CancellationToken object and return a TaskCompletionSource object.
E) Update the DoWork() method to receive a Progress object.
F) Update the DoWork() method to receive a CancellationToken object in the arguments of the method.
4. HOTSPOT
You are developing a Windows store app that requires text documents. The documents are loaded from a web service and are often larger than 5 MB. The users of the app travel between offices that are located on different continents.
The app must support thousands of documents and use as little local storage as possible.
You need to store the documents to meet the requirements.
You have the following code:
Which code snippets should you insert in Target 1 and Target 2 to complete the code? (To answer, select the correct code snippet from each drop-down list in the answer area.)
5. DRAG DROP
You plan to deploy an app to the Windows Store. The app will have a trial mode of 30 days.
You need to develop a solution that displays a notification on the main page that shows the number of days remaining before the trial mode expires. Develop the solution by selecting and ordering the required code snippets. You may not need all of the code snippets.
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: A,C,D | Question # 3 Answer: A,B,F | Question # 4 Answer: Only visible for members | Question # 5 Answer: Only visible for members |


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