Top networking courses include Computer Communications from the University of Colorado and Google's Bits and Bytes of Computer Networking. These cover key topics like network protocols, IP addressing, DNS, routing, and cybersecurity.‎

Yes. Many networking courses offer a free audit option, which lets you access video lessons and reading materials at no cost. To earn a certificate or complete assessments, you’ll need to pay or apply for financial aid.‎

You’ll learn how data moves across the internet, how networks are designed and secured, and how to troubleshoot common connectivity issues. Courses often cover TCP/IP, firewalls, VPNs, switches, and wireless networks.‎