mac address is usually stored on what computer

The mac address is usually stored on the computer's "network card". The network card belongs to the physical layer of the OSI model. It only transmits signals and does not analyze high-level data. The MAC address is globally unique and is an address used to confirm the location of network devices. It is usually fixed on the computer's network card.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

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The mac address is usually stored on the computer's "network card".

MAC address (English: Media Access Control Address), literally translated as media access control address, also known as LAN Address, MAC address, Ethernet Address Or physical address (Physical Address), which is an address used to confirm the location of a network device.

In the OSI model, the third network layer is responsible for the IP address, and the second data link layer is responsible for the MAC address.

The MAC address is used to uniquely identify a network card in the network. If a device has one or more network cards, each network card needs and will have a unique MAC address.

The length of the MAC address is 48 bits (6 bytes), usually expressed as 12 hexadecimal numbers, such as: 00-16-EA-AE-3C-40 is a MAC address , the first 3 bytes, the hexadecimal number 00-16-EA represents the network hardware manufacturer's number, which is assigned by IEEE (Institute of Electrical and Electronics Engineers), and the next 3 bytes, the hexadecimal number AE-3C -40 represents the serial number of a network product (such as a network card) manufactured by the manufacturer. As long as your MAC address is not changed, the MAC address is unique in the world. Figuratively speaking, the MAC address is like the ID number on the ID card, which is unique.

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