... necessary. c. Check network layer integrity. 2 - 3 CCNA 1: Networking Basics v 3.0 - Lab 5. 2. 3c Copyright 20 03, Cisco Systems, Inc. Lab 5. 2. 3c Troubleshooting Interconnected Devices ... interface) and at least one serial interface. • 10 BASE-T AUI transceiver (DB- 15 to RJ- 45) for a router with an AUI Ethernet interface, which is a 25 0 0 Series • Several straight-through, crossover, ... network. By working in teams of two, one person can set up the 1 - 3 CCNA 1: Networking Basics v 3.0 - Lab 5. 2. 3c Copyright 20 03, Cisco Systems, Inc. ...