A MAC address is composed of two 24-bit numbers. What does the first 24-bit number represent?
A) It's a unique serial number assigned by the manufacturer.
B) It's the address it uses for a multicast packet.
C) It's the decryption key used for security purposes.
D) It's the organizationally unique identifier for the manufacturer of the device.

Question

Quizplus · Accepted Answer

The first 24-bit number of a MAC address represents the organizationally unique identifier (OUI) for the manufacturer of the device. This allows different manufacturers to be identified by their unique OUIs within the MAC address, which is important for network management and troubleshooting purposes.

A MAC Address Is Composed of Two 24-Bit Numbers