Which is a design alternative in the SAFE SMR midsize network design campus module?

Which is a design alternative in the SAFE SMR midsize network design campus module?

A.
The router between the firewall and the campus module can be eliminated.

B.
A NIDS appliance can be placed in front of the firewall.

C.
A URL filtering server can be placed on the public services segment to filter the types of Web
pages employees can access.

D.
The end-user workstations can be connected directly to the core switch