Computer Science for IGCSE & O level - Hardware (Section 9 - No. 8)
Which of the following is/are true regarding MAC addresses?
They are globally unique.
They are assigned by the manufacturer of the network device.
They are used to identify devices on a local network.
They can be changed by the user.
Explicação
MAC addresses are globally unique, assigned by the manufacturer, and used locally. They can be changed, but it is relatively difficult.