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Following questions and answers are all new published by Microsoft Official Exam Center: (The full version is in the end of the article!!!)
QUESTION 101
You develop a Windows Presentation Foundation (WPF) application.
This application is used to output data trends to customer service representatives.
You use threading to keep the UI responsive.
You have a function named UpdateUI that updates all of the UI components.
You use the following code to update the _Data variable. (Line numbers included for reference only.)
You need to update the user interface without knowing if you are on the UI thread.
Which code segment should you insert at line 06?