| A | B |
| VPN (virtual private network) | Private network that is configured within a public network. |
| DNS (Domain Name Service) | This service will map a TCP/IP number. Such as 172.16.245. to a more easlily remembered name, sush as www.interswift.com. Thus, when you type www.interswift.com into your browser it goes out to the DNS server and asks for a matching TCP/IP |
| HUB | An electronic device that connects several computers or networks together. |
| Repeater | regenerates and amplifies the data bits in order to maintain a strong signal that might otherwise deteriorate over a long distance. |
| Bridge | Controls the flow of information between LAN segments or networks, even if they are different types of networks using different communication protocols. |
| Brouter | A communication device that functions as both a bridge and a router. |
| Gateway | A protocol converter that supports communications between networks that use different protocols. |
| RJ-45 | A connector that connects a twisted pair cable |
| Cat 5 | Type of cabling that consists of four twisted-pairs of copper wire terminated by RJ-45 connectors. |
| BNC connectors | Used to join coaxial cables le RG-58 A/U into a network |
| Fiber Optic Cable | Carries pulses of laser light which are encoded with digital signals. |
| Network Adapter | A printed circuit board that plugs into both the clients and servers and controls the exhange of data between them. |
| Half Duplex | A communications type in which communication can occur in two directions, but only in one direction at a time. |
| Full duplex | Communications type in which communications can occur in two directions at the same time. |
| TCP/IP | The protocol suite that is used to connect hosts on the internet and other networks. |
| IP Address | A unique 4-bit number that identifies a node on a TCP/IP network. |
| IPX | A NetWare communications protocol used to route one node to another. |
| SPX | The NetWare communications protocol uses to control the transport of messages across a network. |
| NetBEUI | The default networking protocol for the Windows desktop OS. |