| A | B |
|---|
| Internet | A worldwide network of networks. |
| Intranet | A local network of networks. |
| Packet | A piece of a message transmitted over a packet-switching network. |
| ISP | Short for Internet Service Provider, a company that provides access to the Internet |
| PPP | Point to Point protocol. |
| Extranet | A new buzzword that refers to an intranet that is partially accessible to authorized outsiders. |
| Router | A device that connects any number of LANs |
| Proxy Server | A server that sits between a client application, such as a Web browser, and a real server |
| PING command | Short for Packet Internet Groper, a utility to determine whether a specific IP address is accessible |
| OSI Model | Short for Open System Interconnection, an ISO standard for worldwide communications that defines a networking framework for implementing protocols in seven layers. |
| 10Base5 | The original IEEE 10 Mbps Ethernet standard which uses a thick coaxial cable. |
| 10Base2 | An earlier 10 Mbps Ethernet standard that uses a thin coaxial cable |
| 10BaseT | A 10 Mbps Ethernet standard that uses twisted wire pairs (telephone wire). |
| CSMA/CD | (Carrier Sense Multiple Access/Collision Detection) The LAN access method used in Ethernet. When a device wants to gain access to the network, it checks to see if the network is quiet (senses the carrier) |
