Troubleshooting should include

• use of command-line tools (e.g., ipconfig, ping, tracert, nslookup, netstat)
• cable-testing equipment
• NIC diagnostics
• protocol configuration
• permissions
• firewall configuration
• electrical interference
• third-party software
• documentation of findings, actions, and outcomes.

Process/Skill Questions: 

• What would happen if a node were to drop for any reason?
• How can electrical interference affect network components?
• How are permissions established within an organization?
• How would a technician use the open systems interconnection (OSI) (seven-layer) model for troubleshooting networks?