Html page extension with session ids

[tahahassan]

Hi i am a newbie in webdesigning. I know that simple HTML page extension is .html and dynmaic page extension .php or .apsx with some session ids, but how come Matt cutts who works for the Search Quality group in Google show a session ids in .html extension in his resent blog post examples about canonical tags.

which are these
http://example.com/page.html
http://www.example.com/page.html?sid=asdf314159265 .

you can see his post here

[mattcutts.com...]

[rocknbil]

Welcome aboard tahahassan, it's most likely that .html files are being parsed by a dynamic language. You can easily reconfigure a server to override any default behavior.

A second non-dynamic reason for attaching a query string to a static file is to avoid browser caching; you can do the same with images:

img src="myimage.jpg?45453467686767"

A third might be to simply track users through a session in stats.

But considering the author and topics there, I doubt these two are the case.

[tahahassan]

Thanks rocknbil for the reply. I think your first point seems valid for this example but at least I now know that it can be possible.