Networks, Cables, OSI, and TCP Models
CSMA/CD, Switching, and VLANs
Trunking, DTP, and Inter-VLAN Routing
Router and Switch Security
Network Address Translation
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Imagine for a moment that networks run on colors instead of using IP addresses. There is an unlimited supply of the colors blue and yellow but the other colors are in short supply. Your network is divided into many users using the colors blue and yellow because they are free to use.