I've configured my first SharePoint 2010 server. i am new to SharePoint and my problem is alternate access mapping. Currently default address is sp2010 (server name). I've added http://sp.test.com for intranet and http://test.com for internet access. I'm confused with default address. what should be default address for SharePoint.
Default zone will have the internal address of the site on which the web application is created.In your case
http://sp2010 is the default address and there is no need for you to change it.