A Network Interface Card (NIC) contains a MAC address. Important PointsThe network interface unit (NIC) is a device (network card) that is connected to each workstation and the server, and it assists the workstation in establishing the crucial network connection. The node address is a unique integer that identifies each network interface unit that is attached to a workstation. The Terminal Access Point is another name for the NIU (TAP). The interface is known by several names depending on the manufacturer. The Network Interface Card (NIC) is another name for the NIU. Each NIC card is given a unique physical address by the NIC manufacturer, which is known as the Media Access Control address (MAC address). A MAC address is a 6-byte address in which each byte is separated by a colon, for example 10:B5:03:63:2E:FC. Hence, the MAC address is correct.