In some URLs, there is not extension to the "file" -- For example:
Initially I thought they are Directories and there is an index.xxx inside the directories.... but I have tried index.php/asp/jsp/htm/html
and they actually do not exist (in the two examples above)
so...what are they?? is "array" a file without an extension or what? If so, how can a web server process files without an extension?