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Network Interface card
Mac address
•What is the physical address (the MAC address) of the NIC (or network adapter) for this connection?
The message must travel from your computer to your router. Every computer connected to a network has a network interface card (NIC) with a unique physical address, called a MAC address (for Media Access Control). At the data link level, two more headers are added, one for your computer's NIC address (the source MAC) and one for your router's NIC address. A data link layer structure with destination MAC, source MAC, and data is called a frame. Every NIC selects from the network those frames with its own address as a destination address. The data link layer adds the structure necessary for data to get from your computer to another computer (a router is just a dedicated computer) on your network. Data Link Layer Transformation.
if by co you mean computer then yes you go to command prompt and type in "ipconfig/all" and you go to "network interface(or whatever it calls your nic)" and it will show u the physical address of your nic
MAC address stored in NIC card
That's an easy one! Each Network Interface Card (NIC) has its own machine level address, called a MAC address which is assigned and programmed into it during manufacture. This is different from the IP address, which can be changed. A NIC is a special hardware card that handles the sending and receiving data computer network. The address that identifies a NIC is called the Media Access Control (MAC) address. A MAC address identifies a specific physical device and never changes for the life of the NIC. Two NICs never have the same MAC address (unless some manufacturer screws up royally [which has happened]). Because your NIC's MAC address is permanent, it's often referred to as the "real," or physical, address of a computer. Two get two cards working just install them and their drivers. If they are both identical, they can use the same driver set.
The built-in identifying address coded into a Network Interface Card (NIC) is called a MAC address. It is a unique identifier assigned to the hardware by the manufacturer and is used to identify devices on a network. MAC addresses are typically 48 bits long and are displayed in hexadecimal format.
The Physical Address
Source MAC address
It is used to connect the computers to the hub
The hardware address or MAC address is encoded on the NIC by the manufacturer for unique identification of the NIC. This cannot be changed.... The IPv4 address is an internet address usually assigned by a DHCP server for each computer on a network. This address can be changed.
NIC