strand 3: IT System

3.1 hardware

Mac Address

In computer networking, the Media Access Control (MAC) address is every bit as important as an IP address. MAC addresses are also known as hardware addresses or physical addresses. MAC addresses are 12-digit hexadecimal numbers (48 bits in length). By convention, MAC addresses are usually written in the following format:

The first half of a MAC address contains the ID number of the adapter manufacturer. These IDs are regulated by an Internet standards body. The second half of a MAC address represents the serial number assigned to the adapter by the manufacturer.

Although intended to be a permanent and globally unique identification, it is possible to change the MAC address on most of today's hardware, this is often referred to as MAC spoofing.

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