<P> A user agent , commonly a web browser or web crawler , initiates communication by making a request for a specific resource using HTTP and the server responds with the content of that resource or an error message if unable to do so . The resource is typically a real file on the server 's secondary storage , but this is not necessarily the case and depends on how the web server is implemented . </P>
<P> A user agent , commonly a web browser or web crawler , initiates communication by making a request for a specific resource using HTTP and the server responds with the content of that resource or an error message if unable to do so . The resource is typically a real file on the server 's secondary storage , but this is not necessarily the case and depends on how the web server is implemented . </P>
who reads the file stored on web servers
who reads the file stored on web servers
user agent , commonly a web browser or web crawler
user agent , commonly a web browser or web crawler