What are some of the other, less frequently used, HTTP request methods and for what purpose is each one used? When an HTTP request is made by a browser to a server, a status code is returned by the...

What are some of the other, less frequently used, HTTP request methods and for what purpose is each one used? When an HTTP request is made by a browser to a server, a status code is returned by the server to the browser. Often the user does not see, and may not even be aware of, these status codes. But . . . what is (probably) the most commonly encountered HTTP status code that an average user will actually see?