Exam 70-486 topic 1 question 127 discussion

Actual exam question from Microsoft's 70-486

Question #: 127
Topic #: 1

Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some questions sets might have more than one correct solution, while others might not have a correct solution.
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You develop an ASP.NET Core MVC web application. You have a legacy business system that sends data to the web application by using Web API. The legacy business system uses proprietary data formats.
You need to handle the proprietary data format.
Solution: Add a custom formatter class to the Web API and implement the IOutputFormatter interface.
Does the solution meet the goal?

A. Yes
B. No

Show Suggested Answer

Suggested Answer: A 🗳️
References:
https://www.c-sharpcorner.com/article/custom-formatters-in-asp-net-core-mvc-web-api/

by francis at Oct. 15, 2019, 8:11 p.m.

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francis

Highly Voted 5 years, 8 months ago

I would say the answer is "No" In this case, the legacy app sends the data *to* the WebAPI app in the proprietary format which suggests enabling reading that using IInputFormatter and not IOutputFormatter.

upvoted 18 times

majco333

5 years, 3 months ago

But MVC web app call WebApi - I haveto customize output formatte. Then "Yes" is correct answer. Definitely. And question 129 is other (WebApi vs MVC)

upvoted 1 times

majco333

5 years, 3 months ago

Sorry... It's NO

upvoted 1 times

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rhysabray

5 years, 3 months ago

I agree. According to the first small paragraph to this page: https://docs.microsoft.com/en-us/aspnet/core/web-api/advanced/custom-formatters?view=aspnetcore-3.1 --> "ASP.NET Core MVC supports data exchange in Web APIs using input and output formatters. Input formatters are used by Model Binding. Output formatters are used to format responses."

upvoted 3 times

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nelaed

Most Recent 4 years, 10 months ago

Add a custom formatter class to the Web API and implement the IOutputFormatter interface. I think propesed answer is correct. We have legacy app that send data by Web API and we have client MVC app. Question asks about Web Api, so we send data by OutputFormatter.

upvoted 4 times

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zimzimzimma

5 years ago

https://vceguide.com/does-the-solution-meet-the-goal-256/ also says NO.

upvoted 1 times

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aousos

5 years, 1 month ago

You have a legacy business system that sends data to the web application by using Web API, so it s an output from the web api to the web application ==> the answer is yes

upvoted 4 times

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mmk1991

5 years, 3 months ago

I would think it's a No for a different reason. Question mentions Asp.Net and not Asp.Net Core. In Asp.Net MVC (MVC5) custom formatters were implemented in a different way: https://docs.microsoft.com/en-us/aspnet/web-api/overview/formats-and-model-binding/media-formatters

upvoted 1 times

mmk1991

5 years, 3 months ago

Sorry, I was looking at the wrong question. Agree with the previous answers - it's a no due to mentioning IOutputFormatter instead of IInputFormatter...

upvoted 1 times

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