1. can't we just add an SELinux role to a Linux account? 2. Can Linux accounts be mapped to more than one SELinux user? 3. Besides associating the valid SELinux roles, what other advantages does an...

1. can't we just add an SELinux role to a Linux account? 2. Can Linux accounts be mapped to more than one SELinux user? 3. Besides associating the valid SELinux roles, what other advantages does an SELinux user have? 4. What purpose does PAM have when dealing with Linux accounts and SELinux mappings? Why