6. Networks

6.1.1 Network Operating Systems
6.1.2 Transmission Protocols and Technologies
6.1.3 Modems
6.1.4 Packet Switching Hardware - hubs, switches, routers
6.1.5 Cable Hardware - copper cables, fiber optics, interconnections
6.1.6 Wireless Network Hardware
6.1.7 Satellite Networks
6.1.8 Network Administration Tools
6.1.9 Network-layer and Physical-layer Security Services - firewalls, monitors, physical security