This is an example of which type of access-control method?
ABC Corporation’s network requires users to authenticate to cross the border firewall, and before entering restricted segments. Servers containing sensitive information require separate authentication. This is an example of which type of access-control method?
A. Single sign-on
B. Decentralized access control
C. Hybrid access control
D. Layered access control
E. Mandatory access control
Answer: D