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Why do we need MAC address?
MAC Addresses handle the physical connection from computer to computer while IP Addresses handle the logical routeable connection from both computer to computer AND network to network.
What is MAC address and why it is required?
MAC address is a unique number which is used to track a device in a network. MAC address provides a secure way to find senders or receivers in the network and helps prevent unwanted network access. Mac address is also used in Wi-Fi networks at the airport for a specific device in order to identify it.
What is true about Ethernet MAC address?
The MAC address is often referred to as the Ethernet Address on an Ethernet network. They are in fact the same thing. The Ethernet address is 48 bits long and normally displayed as 12 hexadecimal digits. The first six digits make up the vendor code and the remainder are assigned by the vendor at manufacturing stage.
Is a MAC address the same as an Ethernet address?
In a LAN, each node is assigned a physical address, also known as a MAC/Ethernet address. This address is unique to each of the nodes on the LAN and is 6 bytes (48 bits) long, which is burned on the Ethernet card (also known as the network interface card). Ethernet is a byte-count protocol.
What is the meaning of MAC address?
Media Access Control Address
MAC address (Media Access Control Address) is a unique identifier assigned to every active network equipment unit. The MAC address is used within the segment of a network as a network address in the majority of the networking technologies, including Ethernet, Wi-Fi and Bluetooth.
Does Facebook know your MAC address?
No. The whole network thing is built on Layers. The OSI model. A MAC address is only useful within a local network.
Why do I need a MAC address for my router?
MAC addresses are commonly used to identify your device when connecting to a network. Routers can filter out MAC addresses they don’t recognize. It’s useful to know the MAC address of your device to ensure it connects to the network properly.
Can a device in network B have a MAC address?
If you have two networks with a router in between you cannot have a device in network A send a packet to the MAC address of a device in network B. No device in network A has the MAC address of the device in network B, so a packet to this MAC address will be discarded by all devices in the network A (also by the router).
What does a MAC address on a computer mean?
A MAC address is a string of 12 figures, usually displayed as six sets of two digits or characters, separated by colons or hyphens. A MAC address is typically assigned to a network interface card (NIC). The NIC is a small circuit board inside your computer that makes it possible for your device to communicate over a network, such as the internet.
When did the IP address and MAC address come out?
IP Addresses and MAC addresses were developed around the same time (circa 1974) but were answers to two, very different problems.