Exam 350-901 topic 1 question 51 discussion

correct answer D

I think answer should be D 503 could be server down or unable to handle the request, it is server side issue, not client side, other options are all trying to modify on client side

https://www.rfc-editor.org/rfc/rfc9110.html#name-503-service-unavailable " The 503 (Service Unavailable) status code indicates that the server is currently unable to handle the request due to a temporary overload or scheduled maintenance, which will likely be alleviated after some delay. The server MAY send a Retry-After header field (Section 10.2.3) to suggest an appropriate amount of time for the client to wait before retrying the request. Note: The existence of the 503 status code does not imply that a server has to use it when becoming overloaded. Some servers might simply refuse the connection. "

The correct answer is D. Look for a Retry-After header in the response and resend the request after the amount of time indicated. A 503 Service Unavailable error code indicates that the server is temporarily unavailable. This could be due to a number of reasons, such as the server being overloaded or undergoing maintenance. The Retry-After header indicates how long the client should wait before retrying the request.

Absolut D. The Retry-After response HTTP header indicates how long the user agent should wait before making a follow-up request. There are three main cases this header is used: When sent with a 503 (Service Unavailable) response, this indicates how long the service is expected to be unavailable. When sent with a 429 (Too Many Requests) response, this indicates how long to wait before making a new request. When sent with a redirect response, such as 301 (Moved Permanently), this indicates the minimum time that the user agent is asked to wait before issuing the redirected request.

D is correct

The correct answer is D. The server is not ready to handle the request. Common causes are a server that is down for maintenance or that is overloaded. Note that together with this response, a user-friendly page explaining the problem should be sent. This response should be used for temporary conditions and the Retry-After HTTP header should, if possible, contain the estimated time before the recovery of the service. The webmaster must also take care of the caching-related headers that are sent along with this response, as these temporary condition responses should usually not be cached.

Also go with D

D is my answer. See https://httpstatuses.com/503 , which states "The server MAY send a Retry-After header field to suggest an appropriate amount of time for the client to wait before retrying the request." This is referenced from rfc7231

Clear B. From https://en.wikipedia.org/wiki/List_of_HTTP_status_codes: 503 Service Unavailable The server cannot handle the request (because it is overloaded or down for maintenance). Generally, this is a temporary state.[66] So there is nothing A,C,D related. The only thing you can try is http instead of https, as it is another sevrice.

D Explanation: The HyperText Transfer Protocol (HTTP) 503 Service Unavailable server error response code indicates that the server is not ready to handle the request. Common causes are a server that is down for maintenance or that is overloaded. This response should be used for temporary conditions and the Retry-After HTTP header should, if possible, contain the estimated time for the recovery of the service.

Answer is 'D'