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.