Which Layer is Mac Address
There are seven layers in the Open Systems Interconnection (OSI) model, and the MAC address is found on layer two, the data link layer. The MAC address is a unique identifier assigned to each network interface for communication. It is used to identify a device on a network, and can also be used to filter traffic.
In computer networking, the Media Access Control (MAC) address is a unique identifier assigned to network interfaces for communications on the physical network segment. MAC addresses are used as a network address for most IEEE 802 network technologies, including Ethernet and Wi-Fi. Logically, MAC addresses are used in the media access control protocol sublayer of the OSI reference model.
The MAC address consists of six bytes, with the first three bytes identifying the manufacturer of the NIC and the last three bytes uniquely identifying the NIC within that manufacturer’s product line. The meaning of the first three bytes is determined by an organization called the Institute of Electrical and Electronics Engineers (IEEE). The IEEE maintains a list of all manufacturers who have been assigned these identification numbers.
MAC Addresses Explained | Cisco CCNA 200-301
Which of the Following is an Example of a Mac Address?
A MAC address is a unique identifier assigned to network interfaces for communications on the physical network segment. MAC addresses are used as a network address for most IEEE 802 network technologies, including Ethernet and Wi-Fi. Logically, MAC addresses are used in the media access control protocol sublayer of the OSI reference model.
A MAC address may also be referred to as a hardware or physical address. It is represented as six pairs of hexadecimal digits, separated by colons (:). For example, 01:23:45:67:89:ab.
The first three octets (24 bits) identify the manufacturer of the NIC. This is known as the Organizationally Unique Identifier (OUI). The OUIs are assigned by the Institute of Electrical and Electronics Engineers (IEEE).
The remaining three octets (24 bits) are assigned by the manufacturer and uniquely identify a NIC from all others made by that manufacturer.
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Is a Mac Address Layer 2 Or 3?
A MAC address is a Layer 2 address, which means it’s used to identify devices on a network at the data link layer. MAC addresses are unique to each device and are assigned by the manufacturer. They’re stored in a device’s firmware and can be used to identify the device on a network.
Is Mac Address a Transport Layer?
MAC addresses are not a transport layer. MAC stands for Media Access Control and is a layer 2 address used to uniquely identify devices on a network. Devices that use MAC addresses include routers, switches, bridges, and NICs.
What is a Mac Address Layer 2?
A MAC address layer 2, also known as a Media Access Control address, is a unique identifier assigned to network interface controllers (NICs) for the purpose of identifying computer systems on a network. MAC addresses are most often used in conjunction with the Address Resolution Protocol (ARP) for mapping IP addresses to hardware devices.
MAC addresses are six bytes long and usually represented in hexadecimal notation, such as 01:23:45:67:89:ab.
A MAC address can be either unicast, meaning it is unique to one NIC, or multicast, meaning it can be used by multiple NICs.
Conclusion
The MAC address is the Media Access Control address, a unique identifier assigned to network interfaces for communications on the physical network segment. MAC addresses are used in many networking technologies and standards, such as Ethernet and WiFi. MAC addresses are most often assigned by device manufacturers, and they are usually stored in the firmware or hardware of the device.
