| 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 | 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 | A device that connects two LAN segments together, which may be of similar or dissimilar types, such as Ethernet and Token Ring. |
| BRouter (Bridge Router.) | A device that acts as both a bridge and a 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. RJ-45 plugs and sockets are used in Ethernet and Token Ring Type 3 devices. |
| Cat5 (Category 5.) | A type of cable that has transfer rates of up to 100Mbps. |
| BNC Connector (Bayonet Neill-Concelman or British Naval Connector.) | A commonly used plug and socket for audio, video and networking applications. |
| Fiber-Optic Cable | A thin glass strand designed for light transmission. A single hair-thin fiber is capable of transmitting trillions of bits per second. |
| Network Adapter | A printed circuit board that plugs into both the clients and servers and controls the axchange of data between them |
| Half Duplex | The transmission of data in both directions, but only one direction at a time. |
| Full Duplex | Transmitting and receiving data simultaneously |
| TCP/IP | A communications protocol developed under contract of the US department of defense to internetwork dissimilar networks. |
| 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.) | Transport layer for net BIOS |
