A network architect is planning a complete access layer and core upgrade for a customer’s
campus LAN. The campus has four large buildings, each requiring between 1000 and 3000 edge
ports. Which factor will play a primary role in determining whether the network architect needs to
plan a two-tier or three-tier topology for the campus LAN?

A.
Whether the customer can afford the core switches that support intelligent Resilient Framework
(IRF).

B.
The number of fiber links between each building and the building where the core switches
reside.

C.
Whether the customer requires a wireless solution.

D.
The high number of edge ports that the solution requires.