Logical Link Control (LLC)
IEEE 802.2
CSMA/CD Token Bus Token Ring DQDB
IEEE 802.3 IEEE 802.4 IEEE 802.5 IEEE 802.6
10 Mb/ s 1-20 Mb/ s 4, 16 Mb/ s to 2.4 Gb/s
(coax) (coax) (wire) (optical)
(wire) (optical) FDDI SONET
100 Mb/ s + ...
(optical)
physical layer
network layer
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