182 COURSE DESCRIPTIONS v Indicates laboratory or studio fees 8 Indicates course may be offered online CNT 240 v CISCO NETWORK ACADEMY SEMESTER III (4) Prerequisite(s): CNT 150. Instruction includes, but is not limited to, the Open System Interconnection (OSI) Reference Model, a study of the OSI layer functions, local-area network (LAN) switching, Ethernet and virtual LANs (VLANs), LAN design, interior gateway routing protocol (IGRP), access control lists (ACLs), Novell Internet Packet Exchange (IPX), and network management. Particular emphasis is given to students being able to demonstrate the ...