| A | B |
|---|
| VPN | a large network made up of a number of smaller networks |
| 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. The DNS server maintains a database of domain names (host names) and their corresponding IP addresses. |
| Hubs | (1) A central connecting device in a network that joins communications lines together in a star configuration. Passive hubs are just connecting units that add nothing to the data passing through them. Active hubs, also sometimes called "multiport repeaters," regenerate the data bits in order to maintain a strong signal, and intelligent hubs provide added functionality. |
| Repeater | Non-synchronized data that can be transmitted intermittedly rather than in a continuous stream |
| 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. For example, a gateway can convert a TCP/IP packet to a NetWare IPX packet and vice versa or from AppleTalk to DECnet, from SNA to AppleTalk and so on. |
| RJ-45 | connetor with eight wites that is used to connect computers onto local Area networks that use twisted pair cabling |
| Cat 5 | type of cabling that consists of four twisted-pairs of copper connectors. |
| BNC Connector | The type of connector most commonly used to join coax cables in a network. |
| Fiber-Optic Cable | An optical fiber cable that has connectors installed on one or both ends. |
| 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. The network adapter provides services at the data link level of the network, which is also known as the "access method" (OSI layers 1 and 2). |
| Half Duplex | communication type in which communication can occur in two directions, but only in one direction at a time. |
| Full Duplex | communication type in which communication can occur in two directions at the same time. |
| TCP/IP | The protocol suite used to connect hosts on the internet and other networks |
| IP Address | A unique 4-bye number that identifies a node on a TCP/IP network |
| IPX | A netware communications protocol used to control the transport of messages across a network. |
| SPX | the netware communications protocol used to control the transport of messages across a network. |
| NetBEUI | The default networking protocol for the windows desktop operation system. |
