Which action is the appropriate response?

A client is written that uses a REST API to interact with a server. Using HTTPS as the transport, an HTTP request is sent and received an HTTP response. The response contains the HTTP response status code: 503 Service Unavailable.

Which action is the appropriate response?
A . Add an Authorization header that supplies appropriate credentials and sends the updated request.
B . Resend the request using HTTP as the transport instead of HTTP
D . Add an Accept header that indicates the content types that the client understands and send the updated request.
E . Look for a Retry-After header in the response and resend the request after the amount of time indicated.

View Answer

Answer: D