Exam 70-483 topic 2 question 60 discussion

Actual exam question from Microsoft's 70-483

Question #: 60
Topic #: 2

You are developing an application that uses multiple asynchronous tasks to optimize performance. The application will be deployed in a distributed environment.
You need to retrieve the result of an asynchronous task that retrieves data from a web service. The data will be later be parsed by a separate task.
Which code segment should you use?

A. Option A
B. Option B
C. Option C
D. Option D

Show Suggested Answer

Suggested Answer: C 🗳️

by VladWork at April 14, 2020, 7:35 p.m.

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CNTPD1

5 years, 1 month ago

I got very confused with this, So tried to create a fiddle. IMO A should be correct answer, correct me if I'm wrong. With async GetData should return string, not Task<string>; https://dotnetfiddle.net/pE7Syo

upvoted 2 times

nickname0815

5 years ago

If the async keyword misses, GetData() will return a Task<string>. But this isn't what we want, because "result" in StartTask() is a string (not a Task). So the answer must be C

upvoted 4 times

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lomanov

4 years, 11 months ago

"You need to retrieve the result of an asynchronous task that retrieves data from a web service." - GetData must be async.

upvoted 2 times

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VladWork

5 years, 3 months ago

Why A is incorrect?

upvoted 1 times

abelbm

5 years, 3 months ago

Missing 'async' in Getdata()

upvoted 7 times

Alchemia

5 years, 1 month ago

As one could just return a task instead of awaiting it within the GetData() method generating much less compiler generated code, and that the webclient exposes GetStringAsync(string url) I would say the question is too vague. I'm assuming that exception handling is done within the GetData() which would indeed require to mark the method as async and await the GetStringAsync within GetData itself. That would indeed mean that A is incorrect.

upvoted 4 times

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