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发帖数: 28 | 1 In Physical layer, there is no header, it has only bit stream.
For the datalink layer, it depends. It varies from network type to network type.
for example, ethernet has different frame header with Token Ring.
Even in ethernet, it has some different encapsulations(Cisco's glossary).
We have ethernet, ethernet-2, 802.3, SNAP... |
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