Ethernet LAN Network Interface 
The Network DNA
JUNE 4, 2024
It specifies how data should be packetized, addressed, transmitted, and routed across the network. TCP/IP stack has four layers Application, Transport, Internet, and Network Interface. The OSI Layer Data Link and Physical layer maps to the Network Interface layer of the TCP/IP stack.
CATO Networks
JUNE 14, 2023
Figure 1: Different network protocols for OS identification based on the OSI model Starting from the bottom of the stack, at the data link layer, exists the medium access control (MAC) protocol. Over this protocol, a unique physical identifier, called the MAC address, is allocated to the network interface card (NIC) of each network device.
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