70-491 Real Exam Questions

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.)

You are developing a Windows Store app that allows users to record audio and video files and save them to their devices. You have the following requirements: - The audio and video files must be shorter than three minutes in duration. - The app must finalize recording automatically when the time limit is reached. - You cannot use continuous polling to test when the time limit is reached. You need to ensure that the app meets the requirements. What should you do?

You are developing a Windows Store app. The app will access several web resources that use an OAuth 2.0 authentication provider. You need to recommend in which class to store user credentials so that users do not have to reenter their credentials when they access the web resources. Which class should you recommend?

You need to configure toast notifications for the photo competition. Which code segment should you use?

You are developing a Windows Store app. The app will store data in a text file. You create the following method to store encrypted text in the text file: The WriteData method writes the contents of an IBuffer object to a StorageFile object. You need to recommend a solution to encrypt the data. The solution must minimize the use of system resources and must ensure that the app can decrypt the data. Which code segment should you recommend adding to line 06?