You are an administrator for a large organization that uses a single registered Class B address range. Your organization contains a number of departments that range in size from 25 to 400 employees. Each department is to be given its own separate range of network addresses.

Which networking strategy efficiently uses the addresses allocated to your organization?

A.
configuring static routing tables on all hosts and routers

B.
using switches with more ports in the larger departments

C.
using variable length subnet masks to divide the address space

D.
obtaining some Class A address ranges for the smaller departments

E.
using /etc/netgroup to create network names for each department