How does IE determine whether a site is an internet or an intranet site?

Question

Within IE, people are provided with security setting dialog to decide whether a website is rendered as an internet or an intranet site.

My question is how do you tell the current page you loaded is a internet or intranet in IE 9 or 10? Since I could not find the status bar like those ones in IE 7 or 8

Answer 1

You can look in File -> Properties.
Press Alt to display the menu bar if it's not there.

There you can see "Local intranet" or "Internet".