Udemy – Networking & System Commands: Windows IT Support Masterclass

This course teaches you the exact command-line tools that IT support technicians, help desk agents, and network administrators use every single day to diagnose connectivity issues, manage IP configurations, and keep Windows systems running smoothly. You won’t just learn commands in isolation — you’ll understand when and why to use each one, so you can walk into any troubleshooting situation with confidence.

In this course, you will learn how to:

• Test network connectivity and diagnose connection issues with Ping
• View and manage IP address configurations with IPConfig
• Flush and manage the DNS resolver cache
• Diagnose DNS infrastructure problems with NSLookup
• Trace network routes and identify where connections fail using Tracert
• View active TCP connections and manipulate routing tables
• Configure network interfaces and the Windows Firewall with Netsh
• Identify which routers or subnets are causing network problems
• Repair corrupted system files with SFC (System File Checker)
• Service and manage Windows images with DISM
• Generate power and battery usage reports
• Check and repair disk problems with CheckDisk
• View full OS configuration details from the command line