1. This figure i very vividly describes the hierarchical computer:
2. memorable is:
as long as the package running on the network, is complete. There can be no lower upper, upper absolutely impossible
not lower.
3. Question:
TCP three-way handshake protocol disconnected four times, IP and MAC layers is how to fit?
What is the real meaning of the network hierarchy? --- book review
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Origin blog.51cto.com/8560232/2431270
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