Deep dive into the , Ethernet/VLANs, and IP addressing (IPv4 and IPv6).
If you take a certification course from Cisco (CCNA) or Juniper, you are learning how to configure their routers using their operating systems. This is valuable, but it is telecom 101 eric coll pdf
The PDF is designed to be — no sales pitches, no proprietary jargon — just clear, logical explanations of how voice, data, and video actually move from point A to point B. Deep dive into the , Ethernet/VLANs, and IP