How can you identify the manufacturer of a network interface?

The manufacturer of a network interface can be identified through the MAC Address. Each network interface card (NIC) comes with a unique MAC Address that is assigned by the manufacturer. This address is composed of a series of hexadecimal numbers and is standardized in a way that the first half (the Organizationally Unique Identifier or OUI) corresponds to the manufacturer. By examining the OUI, you can determine the specific company that produced the network interface.

Other options, such as the IP Address, are not tied to the manufacturer but rather to the device's address on a network. The Device Name might not provide any information about the manufacturer either, as it can be set by the user or the operating system and doesn't correlate to any specific manufacturer standards. Lastly, the Serial Number is primarily used for warranty and support purposes and does not give information about the manufacturer in a standardized format.