Resource identification
The remaining URL components help locate a specific resource. The path, with optional parameters, and an optional query are processed by the web server to locate or compute a response. The path often corresponds to an actual file path on the host's filesystem. For example, an Apache web server running on www.example.com may store all the web content under the directory /usr/local/apache/htdocs and be configured to use the path component of the URL relative to that directory. The HTTP response to the URL http://www.example.com/marketing/home.php contains the file /usr/local/apache/htdocs/marketing/home.php.