Exam 70-483 topic 1 question 66 discussion

Actual exam question from Microsoft's 70-483

Question #: 66
Topic #: 1

You use the Task.Run() method to launch a long-running data processing operation. The data processing operation often fails in times of heavy network congestion.
If the data processing operation fails, a second operation must clean up any results of the first operation.
You need to ensure that the second operation is invoked only if the data processing operation throws an unhandled exception.
What should you do?

A. Create a task within the operation, and set the Task.StartOnError property to true.
B. Create a TaskFactory object and call the ContinueWhenAll() method of the object.
C. Create a task by calling the Task.ContinueWith() method.
D. Use the TaskScheduler class to create a task and call the TryExecuteTask() method on the class.

Show Suggested Answer

Suggested Answer: C 🗳️
Task.ContinueWith - Creates a continuation that executes asynchronously when the target Task completes. The returned Task will not be scheduled for execution until the current task has completed, whether it completes due to running to completion successfully, faulting due to an unhandled exception, or exiting out early due to being canceled.
References: http://msdn.microsoft.com/en-us/library/dd270696.aspx

by rosdra at Jan. 24, 2020, 6:36 p.m.

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rosdra

Highly Voted 5 years, 4 months ago

And should add TaskContinuationOptions.OnlyOnFaulted => "Specifies that the continuation task should be scheduled only if its antecedent threw an unhandled exception"

upvoted 15 times

mmarinov

5 years, 1 month ago

I agree with you. The provided answer is not full

upvoted 6 times

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