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Layer 2: Data Link: Includes the Network Interface Card (NIC), which serves as the interface amongst the pc and the network. The NIC is typically built into the motherboard and is assigned a Media Access Handle (MAC) address that offers each program connected to a network a special ID. The MAC address is utilised to guarantee that information is delivered to the right pc, and NICs use electricity to send and receive packets of binary data as pulses of electricity, light, or radio waves.
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