When you register subsequent sites it's a good idea to use the initial NIC handle, or else they'll assign you another one. It only matters when you want to update registration information, it allows you to make changes in one place instead of having to change the registration individually for every domain you have. Node A device attached to a network. A node uses the network as a means of communication and has an address on the network. Generally, POPs refer to the location where people can dial into the provider's host computer.
Most providers have several POPs to allow low-cost access via telephone lines.
Protocol A set of standards that define how traffic and communications are handled by a computer or network routers. Router A communications device designed to transmit signals via the most efficient route possible. This term refers to a program that helps users find information in text-oriented databases. Server A computer system that manages and delivers information for client computers. Socket This is a communication mechanism originally implemented on the BSD version of the UNIX operating system.