!!! Overview
[{$pagename}] ([MAC Address]), also called a physical address, of a computer which is a [Unique Identifier] assigned to network interfaces for [communications] on the physical [network] segment. 


[{$pagename}]es are used as a network address for most [IEEE 802] [Network] Technologies, including [Ethernet] and [Wi-Fi]. Logically, [MAC Address]es are used in the [Media Access Control] sublayer of the [OSI-Model].

[{$pagename}]es are most often assigned by the manufacturer of a [Network Interface Controller] ([NIC]) and are stored in its hardware, such as the card's [read-only] [memory] or some other [firmware] mechanism. If assigned by the manufacturer, a MAC address usually encodes the manufacturer's registered identification number and may be referred to as the burned-in address (BIA). 

[{$pagename}] may also be known as an Ethernet hardware address (EHA), hardware address or physical address. This can be contrasted to a programmed address, where the host device issues commands to the NIC to use an arbitrary address.

A network node may have multiple NICs and each NIC must have a unique MAC address.

MAC addresses are formed according to the rules of one of three numbering name spaces managed by the [Institute of Electrical and Electronics Engineers] ([IEEE]): MAC-48, EUI-48, and EUI-64. The IEEE claims trademarks on the names EUI-48[1] and EUI-64,[2] in which EUI is an abbreviation for [Extended Unique Identifier].

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]
----
* [#1] - [MAC_address|Wikipedia:MAC_address|target='_blank'] - based on information obtained 2016-07-17-