"Name two headers that, if present n an http response, always have to be processed in a particular order. state the order and explain."
I have researched this online and in my textbook: Web Application Architecture by Shklar and Rosen.
My initial thought was that it was "www authentication" and "location" however with other research i have become more confused.
Any help would be greatly appreciated.
HTTP headers are independant of each other. They can appear in any order, and be processed in any order. I have never seen multiple HTTP headers that were meant to work together, let alone require being processed in a particular order.
The WWW-Authentication and Location headers have nothing to do with each other. WWW-Authentication is used to request/negotiate auth credentials for a single URL. Location is used during redirect responses (3xx other than 304) to specify a different URL to send a request to.
There was a recent discussion about the processing semantics of the Accept and Accept-Charset headers, but that relationship is not officially defined, and it applies to request headers, not response headers.
