Here is some interview Question and reference material I got from net. It is really good and thanks to the respective author’s appreciate their effort.

what a good sharepoint subject matter expert ought to know... http://timheuer.com/blog/archive/2005/02/24/1691.aspx

Answer
http://community.labo-dotnet.com/blogs/jpnlepe/archive/2005/02/25/18146.aspx

Share Point Portal FAQ:  
http://www.spsfaq.com/general.asp

Suresh Behera