In a MAC address, the OUI identifies the vendor and is contained in the first 24 bits.

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Multiple Choice

In a MAC address, the OUI identifies the vendor and is contained in the first 24 bits.

MAC addresses are 48 bits long and are divided into two parts: the first part is the OUI, which is assigned to a vendor by IEEE, and the second part is the NIC-specific identifier for a device from that vendor. The OUI occupies the first three octets, i.e., the first 24 bits. That’s why the vendor ID is found in the first 24 bits. The remaining 24 bits identify a particular network interface from that vendor. So, the OUI being in the first 24 bits is the correct understanding.

MAC addresses are 48 bits long and are divided into two parts: the first part is the OUI, which is assigned to a vendor by IEEE, and the second part is the NIC-specific identifier for a device from that vendor. The OUI occupies the first three octets, i.e., the first 24 bits. That’s why the vendor ID is found in the first 24 bits. The remaining 24 bits identify a particular network interface from that vendor. So, the OUI being in the first 24 bits is the correct understanding.

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