Suppose you work for a company that has changed internet service providers and needs to redesign the IP network. From your new ISP, you have leased 200.200.200.0/24. You have been assigned the task of subnetting the network so that each department has the appropriate numbers of IP addresses, and you must use classful subnetting because your router is using IGRP as a dynamic routing protocol, and IGRP does not support variable length subnetting.