Network Troubleshooting

About this learning activity In this module, you'll discover key skills to troubleshoot a wide range of network issues that an IT support technician might encounter. These skills are essential to resolve wired and wireless network issues to keep organizations connected to their business partners. You'll explore the CompTIA troubleshooting methodology and Open Systems Interconnection (OSI) model for network troubleshooting. You'll learn about common network issues and the process IT support technicians use to isolate a network issue. You'll discover the steps for checking and resolving network hardware issues on wired networks and explore commands to perform checks on network configurations. You'll use a troubleshooting tool to capture and analyze network data for a scenario. Then, you'll focus on common troubleshooting steps for wireless networks, including checking indicator lights on routers and selecting a wireless network testing method for different scenarios. Learning objectives After completing this module, you should be able to: Follow a network troubleshooting methodology Explain the process to isolate common network issues Use a troubleshooting tool to capture and analyze network data for a scenario Follow the steps to check and resolve hardware issues for a wired network Use network commands to help troubleshoot wired network issues Change a DNS server to resolve a DNS resolution issue Apply common methods to troubleshoot wireless networks Select a wireless network testing method given a scenario Lessons Network troubleshooting methodologies Troubleshoot a wired network Troubleshoot a wireless network