Day 15 – Layer 1 and Layer 2 Troubleshooting Day 15 Tasks Troubleshooting at the Physical Layer Using the Command Line Interface to Troubleshoot Link Issues Troubleshooting Port Configuration Troubleshooting VLANs and Trunking Day 15 Questions Day 15 Answers Day 15 Lab Layer 1 Troubleshooting Lab Layer 2 Troubleshooting Lab