executable in URL

While I was planning a trip on a railroad website, I noticed the website was rendered by a .exe ( http://reiseauskunft.bahn开发者_运维技巧.de/bin/query.exe )

My question: is this a CGI script, and if so, isn't that terribly inefficient? I mean, every query launches a new thread. Imagine a train gets cancelled, the server would be DDoS'd in no time, no?

You can put anything into a URL structure using URL rewriting, so this could really mean anything. Maybe the planners of the portal preferred .exe to signify an action; maybe indeed an executable is called via CGI. Chances are it's a custom-built web server anyway.

You'd have to ask the people who built bahn.de's traffic information for a definitive reply - as far as I know, it's these guys.