Does a MasterPage know what page is being displayed?

Question

When I navigate on a website utilizing MasterPages, does the application know what page I am on? If so, does it store it in an object I can access?

The reason I am

Answer 1

string s = this.Page.GetType().FullName;
string[] array = s.Split('_');
int count = array.Count();
string currentPage = array[count - 2];