| A | B |
|---|
| VPN | Virtual Private Network) A private network that is configured within a public network |
| DNS | (Domain Name System) Name resolution software that lets users locate computers on a UNIX network or the Internet (TCP/IP network) by domain name. |
| HUB | 1) A central connecting device in a network that joins communications lines together in a star configuration |
| REPEATER | A communications device that amplifies (analog) or regenerates (digital) the data signal in order to extend the transmission distance. |
| BRIDGE | To cross from one circuit, channel or element over to another. |
| BROUTER | A communications device that provides the functions of a bridge and router |
| GATEWAY | A computer that performs protocol conversion between different types of networks or applications. |
| RJ-45 | Registered Jack-45) A telephone connector that holds up to eight wires. |
| CAT 5 | The following categories are based on their transmission capacity |
| BNC CONNECTOR | Bayonet Neill-Concelman or British Naval Connector) A commonly used plug and socket for audio, video and networking applications. |
| FIBER OPTIC CABLE | Refers to systems that use optical fibers. Fiber- optic communications networks have transformed the world. Barely starting in the late 1960s but gaining serious momentum in the 1980s, the phone companies began to replace their copper long distance trunks with fiber cable. |
| NETWORK ADAPTER | A printed circuit board that plugs into both the clients (personal computers or workstations) and servers and controls the exchange of data between them. |
| HALF DUPLEX | The transmission of data in both directions, but only one direction at a time. |
| TCP/IP | (Transmission Control Protocol/Internet Protocol) A communications protocol developed under contract from the U.S. Department of Defense to internetwork dissimilar systems. Invented by Vinton Cerf and Bob Kahn, this de facto UNIX standard is the protocol of the Internet and has become the global standard for communications. |
| IP ADDRESS | (Internet Protocol address) The address of a computer attached to a TCP/IP network |
| IPX | (Internetwork Packet EXchange) A NetWare communications protocol used to route messages from one node to another |
| SPX | Sequenced Packet EXchange) The NetWare communications protocol used to control the transport of messages across a network. |
| NETBEUI | (NetBIOS Extended User Interface) Pronounced "net-booey." The transport layer for NetBIOS |
