How to Find the Host Name

 The Open Systems Interconnect (OSI) model for network communications establishes a layered approach to communicating between computers on a network. Each layer of this seven-layer model may have its own way of referring to the other computers with which it communicates. This means that any given network server may have many different addresses on file--for use with the different communications layers at work.

Ethernet
Working at layer two of the OSI model, all systems connected to an ethernet network will have a unique ethernet address. This address is expressed as a set of eight hexadecimal values, such as 00-2B-78-5F-03-8A. This address may be used by network switches and bridges to help constrain and route traffic to this particular server.

Internet Protocol
The Internet Protocol, working at layer three of the OSI model, establishes a unique IP address for every machine on the Internet. IP addresses have three parts: network address, node address and subnet mask. Though the original design was to have this combination be unique in the world, it must at least be unique on your local network.

Network Address
IP addresses are typically listed as a set of four decimal numbers, each separated by a period. The left-most portion of the address is the network number for the server. Unlike ethernet addresses, IP addresses are expressed in decimals, such as 198.178.58.189.


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