Assuming that is true, what control, if any, should be recommended to mitigate this weakness?

For locations 3a, 1d and 3d, the diagram indicates hubs with lines that appear to be open and active. Assuming that is true, what control, if any, should be recommended to mitigate this weakness?

A.
Intelligent hub

B.
Physical security over the hubs

C.
Physical security and an intelligent hub

D.
No controls are necessary since this is not a weakness

Explanation:
Open hubs represent a significant control weakness because of the potential to access a network connection easily. An intelligent hub would allow the deactivation of a single port while leaving the remaining ports active. Additionally, physical security would also provide reasonable protection over hubs with active ports.