Exam 200-901 topic 1 question 49 discussion

d, status code can use as a conditional check

The answer is status_code. The question asks about which element of the response is used, yeah the header is used but not as a whole, it uses the status_code which is inside of the header.

E. status code

E - status code Don't overthink it, the examples in the book also checked status code.

my application accept xml format, If I got a response in json format, that wouldn´t be a valid response, my app couldn´t process the response

Status Code

This one is tricky, if you think about it, by checking the response code you can know whether the request was successful or not. But in theory, all responses are valid, they're just a consequence of what you sent in the request. But not all responses are successful responses, that's different. On the other side, if your application is expecting a response to a GET request where data MUST be encoded in JSON but our server sends XML, then this response is not VALID for our application, because we don't support it. Again, it is tricky but if we strictly follow the wording in this question, B makes more sense because we could check the content-type header and determine whether we accept or not this response.

B IS INCORRECT. D (Status Code) is correct because it refers to the first line of the response, where you can check the principal response of the CRUD operation. https://developer.cisco.com/learning/lab/what-are-rest-apis/step/1

E. status code

Status code is the correct one

Status Code I would believe... Responses consist of the following elements: The version of the HTTP protocol they follow. A status code, indicating if the request was successful, or not, and why. A status message, a non-authoritative short description of the status code. HTTP headers, like those for requests. https://developer.mozilla.org/en-US/docs/Web/HTTP/Overview

Suppose, status_code is right. I thought, maybe this question is about HTTP conditional request, but I then decided that it could not be so overcomplicating

I am not sure, but seems B is correct. Because they are asking " element of the response"; i guess response header is an element (which will contain status code, and few other infos as well). Again, not sure though ....