Last Updated on January 13, 2019 by InfraExam
Which statement is true about MAC addresses?
- MAC addresses are implemented by software.
- A NIC only needs a MAC address if connected to a WAN.
- The first three bytes are used by the vendor assigned OUI.
- The ISO is responsible for MAC addresses regulations.
Explanation:A MAC address is composed of 6 bytes. The first 3 bytes are used for vendor identification and the last 3 bytes must be assigned a unique value within the same OUI. MAC addresses are implemented in hardware. A NIC needs a MAC address to communicate over the LAN. The IEEE regulates the MAC addresses.