Answer / swapna

In the role-based security model, access to parts of an
application are granted or denied based on the role to
which the callers belong.

A role defines which members of a Windows domain are
allowed to work with what components, methods, or interfaces

Answer / sushil kumar

Role Based Security lets you identify groups of users to allow or deny based on their role in the organization.In Windows NT and Windows XP, roles map to names used to identify user groups. Windows defines several built-in groups, including Administrators, Users, and Guests.To allow or deny access to certain groups of users, add the <ROLES>element to the authorization list in your Web application's Web.config file.e.g.
<AUTHORIZATION>< authorization >
< allow roles="Domain NameAdministrators" / > < !-- Allow Administrators in domain. -- >
< deny users="*" / > < !-- Deny anyone else. -- >
< /authorization >

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