Which trusted facility management concept implies that two operators must review and approve
the work of each other?

A.
Two-man control

B.
Dual control

C.
Double control

D.
Segregation control

Explanation:
The proper term for this trusted facility management concept is “Two-man Control”,
it means that two people must work and approve each others work to provide increased security
and eliminate the possibility of one of them to hurt the company. For example they can only make
changes to the system if both of them authenticate with their retina at the same time at the data
center and enter their secret password This kind of work fashion is only used in highly secure
environments, its not very common.