Using ASP.NET Membership provider you can do the following operations, 1. Create New users 2. Delete users 3. Update users 4. Retrieve user list and details 5. Validate user credentials
There are 3 types of mode, they are: 1. On This setting applies when you want to enable custom errors. 2. Off This setting applies when you want to disable custom errors. 3. RemoteOnly This is when you want to display custom errors only to the Remote clients and generic full errors to local client.
A breadcrumb is a feature of ASP.NET SiteMapPath which shows the user's current location (hierarchy of the flow in which he came) and allows him to navigate back through any of the flow he came through by links.