Which of the following access control methods could allow for a network user to sign onto their corporate network and their supplier’s network portal without having to enter their ID and password more than once?

Which of the following access control methods could allow for a network user to sign onto their corporate network and their supplier’s network portal without having to enter their ID and password more than once?
A . Discretionary access control
B . Mandatory access control
C . Role-based access control
D . Federated access control

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Answer: D