| network appear to the Internet as a single address. For |
| routing messages properly within your network, each |
| device requires a unique IP address. But the addresses |
| may not be valid outside your network. NAT solves the |
| problem. When devices within your network request |
| information from the Internet, the requests are forwarded |
| to the Internet under the router's IP address. NAT |
| distributes the responses to the proper IP addresses |
| within your network. |
Network | A network consists of a collection of two or more devices, |
| people, or components that communicate with each |
| other over physical or virtual media. The most common |
| types of network are: |
| LAN – (local area network): Computers are in close |
| distance to one another. They are usually in the same |
| office space, room, or building. |
| WAN – (wide area network): The computers are in |
| different geographic locations and are connected by |
| telephone lines or radio waves. |
NWay Protocol | A network protocol that can automatically negotiate the |
| highest possible transmission speed between two |
| devices. |
P
PCM | PCM (Pulse Code Modulation) is a technique for |
| converting analog audio signals into digital form for |
| transmission. |
PING | Packet Internet Groper, a utility used to determine |
| whether a specific IP address is accessible. It functions |
| by sending a packet to the specified address and waits |
| for a reply. It is primarily used to troubleshoot Internet |
| connections. |
PPPoE | |
| specification for connecting the users on an Ethernet to |
| the Internet through a common broadband medium, such |
| as DSL or cable modem. All the users over the Ethernet |
| share a common connection. |
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