Which one of the following is true about the Cisco core layer in the three-tier design?
A. Never do anything to slow down traffic. This includes making sure you don't use access lists, perform routing between virtual local area networks, or implement packet filtering.
B. It's best to support workgroup access here.
C. Expanding the core, eg adding routers as the internet work grows. Is highly recommended as a first step.
D. All cables from the core must connect to the TOR