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ethernet LAN VLAN WAN Wi-Fi 802.11a 802.11b/g 802.11n 2.4Ghz 5Ghz switch router tool software "layer 1physical" "layer 2 data link" "layer 3 network" network packet tag unicast multicast broadcast ...

ethernet LAN VLAN WAN Wi-Fi 802.11a 802.11b_g 802.11n 2.4Ghz 5Ghz switch router tool software layer 1physical layer 2 data link layer 3 network network packet tag unicast multicast broadcast MAC IP address DHCP online proxy server VoIP video port TCP UDP

started by Tyme 2.0 on 23 Dec 09 1 follow-up, last by Tyme 2.0 on 23 Dec 09