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

Question

Quizplus · Accepted Answer

The first 24-bit number in a MAC address represents the organizationally unique identifier (OUI), which is a code assigned by the IEEE to identify the manufacturer or vendor of the device. The OUI is used to ensure that each MAC address is unique and can be identified by network devices when communicating on a network.

A MAC Address Is Composed of Two 24-Bit Numbers