![]() Which security mechanism would they use? A quick way to do that would be to block that device's MAC address. Let's say a network administrator wants to block a certain device from accessing a network. ![]() Precisely because MAC addresses are essentially burned-in, they play a role in securing a network. For example, if your laptop has both built-in Wi-Fi and an Ethernet port, it has two MAC addresses. Still, a device can have more than one MAC address. Rather, they are assigned by manufacturers themselves. These addresses don't change on their own, like an IP might. Your computer or smartphone would not be able to function properly or connect to a network without a MAC address. ![]() MAC addresses are sort of like ID numbers for computers, smartphones, routers, and so on. So, a typical MAC address would look something like this: 18-3B-5D-03-8A-40. Every device that connects to the internet has a Media Access Control (MAC) address, which usually consists of six sets of two characters.
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