Upper Layers

• All Servers on a LAN Use the Same Subnet Layer Standards, which are implemented by NICs

• Servers can differ in upper-layer standards

App

TCP

IP

802.2

802.3 MAC

100Base-TX

App

SPX

IPX

802.2

802.3 MAC

100Base-TX

App

NetBEUI

802.2

802.3 MAC

100Base-TX

Box

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