a number of XNS's solutions to common problems were used in AppleNet's replacement, AppleTalk.

Description

Overall design

In comparison to the OSI model's 7 layers, XNS is a five-layer system, like the later Internet protocol suite.

The Physical and Data Link layers of the OSI model correspond to the Physical layer (layer 0) in XNS, which was designed to use the transport mechanism of the underlying

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