Assume a system with N job positions. For job position i, the number of individual users in that position is Ui and the number of permissions required for the job position is Pi . a) For a traditional DAC scheme, how many relationships between users and permissions must be defined? b) For a RBAC scheme, how many relationships between users and permissions must be defined?

The answer is "DAC one relationship and U*P relationship".

Explanation:

Option a:

The DAC schema is used to provide the access control, it uses in the domain controller to blocks the access of the device, which is based on the user's identity, that's why it provides only one relationship.

Option b:

The RBAC is used in network it provides a method to block access to the network, which is based on user positions in the business, and it provides the U*P relationship, where U stands for a set of individuals, and P stands for sets of required permissions.