When the device is connected to a switch, the switch records the address of the media access control (MAC) with the code attached to the network interface card (NIC) of the device connected to the Ethernet cable connected to the switch. The key uses the MAC address to determine which outgoing packets of the connected device were sent without sending and where the incoming packets will be delivered.
Thus, the MAC address identifies the physical device as
opposed to the IP address of the network layer (layer 3), which can be
dynamically assigned to the device and change over time.
When one device sends a packet to another device, the other
enters the key and reads the head to determine what the key will do. The
destination corresponds to the address or addresses and sends the packet
through the appropriate port to the destination devices.
To reduce the likelihood of a collision during network
traffic to the switch and the connected device, most switches offer a full
duplexing feature where incoming and outgoing packets into the device are
included in the full bandwidth. relationship. (Imagine two people talking on a
cell phone, unlike a wireless phone).
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