Access Representational State Transfer (REST) Services from Within Business Central MB-820 Practice Questions (Page 3)

Questions 11–15

1. 11expert · hard

   A Business Central extension calls an external API that returns a 202 Accepted status with a Location header pointing to a status endpoint. The developer needs to poll the status endpoint until the operation completes. Which approach is most appropriate?

   • ARead the Location header from the response, then poll that URL with a delay until the status indicates completion.
   • BUse the response body to determine the status URL instead of the Location header.
   • CIgnore the Location header and immediately call the original endpoint again to check status.
   • DTreat the 202 response as the final result and do not poll further.
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2. 12foundation · easy

   Which AL class is used to parse JSON data received from a REST service?

   • ATextBuilder
   • BJsonObject
   • CHttpContent
   • DJsonToken
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4. 13foundation · easy

   Which method of the JsonObject class in AL is used to read JSON data from a string?

   • AWriteTo
   • BSelectToken
   • CReadFrom
   • DGet
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5. 14application · medium

   A company uses an external REST API that expects a JSON payload with a specific date format. The developer must ensure the date is serialized correctly. Which approach is correct?

   • AUse the Format function on the JsonObject to convert the date automatically.
   • BAdd the Date variable directly to the JsonObject using Add('date', dateVar).
   • CAdd the Date variable as a JsonValue using JsonValue.Create(dateVar).
   • DConvert the Date variable to a Text value in the required format before adding it to the JsonObject.
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6. 15application · medium

   A developer is sending a POST request with a JSON body. The API requires the Content-Type header to be set to 'application/json'. Which code correctly sets this header on the HttpContent?

   • Aclient.Headers.Add('Content-Type', 'application/json');
   • Bcontent.Headers.Add('Content-Type', 'application/json');
   • Crequest.Headers.Add('Content-Type', 'application/json');
   • Dcontent.SetHeader('Content-Type', 'application/json');
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