Cisco Certified Network Associate (CCNA)

Part IV: Cisco Internetwork Troubleshooting (CIT)

Troubleshooting Methodology

Network Documentation

End-System Documentation and Troubleshooting

Protocol Attributes

Cisco Diagnostic Commands and TCP/IP Troubleshooting

TCP/IP Routing Protocol Troubleshooting

Troubleshooting Serial Line and Frame Relay Connectivity

Troubleshooting ISDN

Troubleshooting Switched Ethernet

Applying Cisco’s Diagnostic Tools