While rarely enforced, mandatory vacation policies are effective at uncovering:

A.
Help desk technicians with oversight by multiple supervisors and detailed quality control
systems.

B.
Collusion between two employees who perform the same business function.

C.
Acts of incompetence by a systems engineer designing complex architectures as a member of
a team.

D.
Acts of gross negligence on the part of system administrators with unfettered access to system
and no oversight.

Explanation:
Least privilege (privilege reviews) and job rotation is done when mandatory vacations are
implemented. Then it will uncover areas where the system administrators neglected to check all
users’ privileges since the other users must fill in their positions when they are on their mandatory
vacation.