Exam 70-487 All Questions

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Exam 70-487 topic 1 question 80 discussion

Actual exam question from Microsoft's 70-487

Question #: 80
Topic #: 1

DRAG DROP -
You have two methods named F1 and F2.
F2 takes a sting as a parameter.
You need to create a method named F3. F3 must retrieve a string value asynchronously. The string must call F2. During the asynchronous load of the string, F1 must run.
Which five code blocks should you use? Develop the solution by selecting and arranging the required code blocks in the correct order.
You will not need all of the code blocks.
NOTE:
Select and Place:

Show Suggested Answer

Suggested Answer:

References:
https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/concepts/async/

by seanlim at Nov. 20, 2019, 12:41 p.m.

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dosper

Highly Voted 5 years, 6 months ago

async Task<string> F3() { HttpClient client = new HttpClient(); Task<string> myTaskString = client.GetStringAsync("someUrl"); F1(); string urlContents = await myTaskString; return F2(urlContents); }

upvoted 57 times

MaverickCalibre

5 years, 5 months ago

This way F1() will be running and complete while we are awaiting myTaskString to complete.

upvoted 5 times

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tiger25

5 years, 4 months ago

agreed!

upvoted 2 times

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gehuki

Highly Voted 5 years, 4 months ago

async Task<string> F3() { HttpClient client = new HttpClient(); Task<string> myTaskString = client.GetStringAsync("someUrl"); string urlContents = await myTaskString; F1(); return F2(urlContents); }

upvoted 9 times

mr_

4 years, 10 months ago

This is wrong in my opinion. In that case F1() would not be running during async load of a string, but after it is loaded. Correct answer is already mentioned by dosper and Albeom.

upvoted 4 times

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zimzimzimma

Most Recent 4 years, 9 months ago

The 'official answer' couldn't make less sense if they tried :/ Answers provided by dosper and albeom are correct.

upvoted 4 times

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Albeom

5 years, 1 month ago

async Task<string> F3() { HttpClient client = new HttpClient(); Task<string> myTaskString = client.GetStringAsync("http://msdn.microsoft.com"); //start task F1(); //"during the asynchronous load of the string, F1 must run" string urlContents = await myTaskString; //get task result }

upvoted 8 times

Albeom

5 years, 1 month ago

Edit: ends with return F2(urlContents); }

upvoted 3 times

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voland

5 years, 5 months ago

2nd answer is correct! reference: http://zetcode.com/csharp/httpclient/

upvoted 1 times

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aone999

5 years, 6 months ago

2nd steps is wrong. it should be like Task<string> mytaskstring = cl.GetStringAsync("http://msdn.microsoft.com");

upvoted 4 times

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seanlim

5 years, 6 months ago

2nd answer is wrong. http://www.herongyang.com/C-Sharp/Async-GetStringAsync-Method-Example-Program.html string uri = "http://www.herongyang.com/Service/Hello_REST.php"; HttpClient c = new HttpClient(); Task<string> t = c.GetStringAsync(uri);

upvoted 8 times

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