Exam 70-483 topic 2 question 80 discussion

Actual exam question from Microsoft's 70-483

Question #: 80
Topic #: 2

You are implementing a method named ProcessData that performs a long-running task. The ProcessData() method has the following method signature: public void ProcessData(List<decimal> values, CancellationTokenSource source, CancellationToken token)
If the calling code requests cancellation, the method must perform the following actions:
✑ Cancel the long-running task.
✑ Set the task status to TaskStatus.Canceled.
You need to ensure that the ProcessData() method performs the required actions.
Which code segment should you use in the method body?

A. if (token.IsCancellationRequested)return;
B. throw new AggregateException();
C. token.ThrowIfCancellationRequested();
D. source.Cancel();

Show Suggested Answer

Suggested Answer: C 🗳️

by supersunny at July 24, 2019, 1:34 p.m.

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supersunny

Highly Voted 5 years, 10 months ago

C is correct

upvoted 12 times

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nelaed

Most Recent 5 years, 1 month ago

Why not D? If we use ThrowIfCancellationRequestes then IsCancellationRequested is still set to false.

upvoted 2 times

BurgSharp

4 years, 11 months ago

That is actually what the calling code will do to request cancellation. The Answer is C.

upvoted 4 times

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Kilsimon

4 years, 8 months ago

It is kinda awkward, but "ThrowIfCancellationRequested()" sets the TaskStatus.Cancel while "Cancel()" does not, which is the reason that D is not the answer.

upvoted 3 times

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